Document zdrrNb4GE9OME09a6j9R2ME43
ABD00224798
VINYL THERMAL RELIEF Aberdeen Chemical Plant
February 22, 1994
Process Engineer Approved by
R. H. Sneed Senior Process Engineer
ABD00224799
TABLE OP CONTENTS
ITEMPAGE
I. INTRODUCTION .................................................................................... A. Project Description ..................................................... B. Problem Definition .......................................................... C. Justifications .................................................................... D. Economic Evaluation ..................................................... E. Alternatives Considered ..........................................
1 1 1 1 1 1
II. DESIGN BASIS ....................................................................................
2
III. PROCESS DESCRIPTION ...............................................................
2
IV. IMPACT STATEMENTS ....................................................................
5
V. EQUIPMENT LIST............................................................................... 6
VI. TIE-IN LIST.......................................................................................... 22
VII. PIPING SCHEDULE................................................................................ 23
IX. DRAWINGS.................................................................................................... 24
ABD00224800
INTRODUCTION
A. Project Description
This project eliminates potential liquid packed situations and thermal expansion releases of VCM. This is accomplished by nine relief valves (PSV-0001, PSV0003, PSV-0005, PSV-0007A, PSV-0209, PSV-0364, PSV-0095, PSV-0094, and PSV-0097) and a color code valve system.
The color code system paints valves fluorescent green if it should remain open at all times, except when a safety situation dictates its closure. If such a situation arises, the operator must ensure that the line will not be liquid full before closing the valve. Also as a precautionary measure, these valves will be tagged with a special fluorescent green tag to prevent accidental closing. There will be a quarterly survey by Engineering to ensure that these color coded valves are open and the paint is still in satisfactory condition.
B. Problem Definition
A survey of all liquid VCM lines in the plant revealed that there are several locations that have the potential to become liquid packed. If a line becomes liquid packed and the temperature increases, the pressure increases dramatically due to thermal expansion and can potentially rupture the pipe. Relief systems must be provided in these lines to prevent this from occurring.
C. Justifications
The justification of this project is increased safety due to reducing the chances of a VCM leak.
D. Economic Evaluation
This safety and health project has no economics.
E. Alternatives Considered
It was considered to either lock or tag out the valves that will be color coded. The lock out alternative was eliminated because of the abundant number of valves that need to remain open. The tag out option was eliminated because the tags could easily become worn and removed over time. The color code system prevents adding a large quantity of relief valves.
An alternative to relieving the lines to either the Batch Water Stripper (BWS) or the Emission Recovery System
ABD00224801
2
(ERS) was to relieve it either upstream or downstream of the potentially liquid packed line. This alternative was not chosen because it is standard to relieve VCM to either the BWS or ERS.
II. DESIGN BASIS
A. Safety and Environmental
This project reduces the chances for a VCM leak and thus reduces the chances for employee contact with VCM. The relief valves either relieve to the Batch Water Stripper or the Emission Recovery System and eliminates the chance for a VCM leak.
B. Major Equipment Sizing Basis
The relief valves were sized based on the required relief capacity (gpm) needed to prevent overpressurizing each pipe if the liquid packed situation occurred.
III. PROCESS DESCRIPTION
This process description describes the possible VCM liquid packed situations, as well as how each situation will be avoided. These descriptions will be separated by the P&ID where the potential situation occurs. The P&ID's are attached for your reference.
vs- 090101-PIP-D
1. By color coding the four 3" plug valves, a situation between the railcar and these valves will be avoided.
VS-090102-PID-D
2. PSV-0001, PSV-0003, PSV-0005, and PSV-0007A provide relief for lines 3-VC-VS-0001, 0003, 0005, and 0007 N-A2-22 between the 3" plug valves and the railcar.
3. Color coding the four 3" valves prevents a situation in lines 3-VC-VS-0001, 0003, 0005, and 0007 N-A2-22.
VS-090103-PID-D
4. Color coding this 4" valve prevents a situation in line 4-VC-VS-0009-A2-22.
VS-090105-PID-D
5. Color coding this 6" valve avoids a situation between it and valve 00H102.
ABD00224802
3
PROCESS DESCRIPTION (CONTINUED)
6. Color coding the 6" valve avoids a situation between it and 00H101.
7. Color coding this 3" valve prevents a situation between it and valve 00H104.
8. Color coding the two 4" valves prevents a situation between them.
9. Color coding the three 4" valves prevents a situation between them and it also prevents a situation from occurring on lines 4-VC-NM-0082-N-A2-22 and 4-VC-OM0081-N-A2-22.
OM-O90100-PID-D
10. Color coding the 4" valve prevents a situation between it and 81H701.
11. Color coding the 8" valve prevents a situation between it and 81H702.
12. PSV-0094 prevents a situation between 81H702, 703, 704 and 705.
13. PSV-0209 prevents a situation between 4"valve on FL-691 discharge and 81H703.
14. PSV-0095 avoids a situation between 81H706 and FL-008 and FL-009.
15. PSV-0097 prevents a situation on line 6-VC-OM-0096-NA2-22 .
16. Color coding this valve prevents a situation on line 4-VC-OM-0097-N-A2-22.
OM-O90111-PID-D
17. Color coding the six 3" valves prevents a situation between the RVCM condensers (EX-008 and 009) and RVCM transfer pumps (PP-110 and 111).
18. Color coding the two 2" valves prevents a situation in line 2-VC-OM-0193-E-A2-22.
19. Removing this 2" valve prevents a situation in lines 2-VC-OM-0194 and 0193-E-A2-22.
ABD00224803
4
PROCESS DESCRIPTION (CONTINUED)
20. Color coding this 2" and the 3" valve after EX-376 prevents a situation in line 3-VC-OM-0258-A2-22.
OM-0 90112-PID-D
21. Color coding these valves prevents a situation in lines 2-VC-OM-0194 and 0193-E-A2-22.
22. This 4" valve on the filter bypass line serves no purpose and should be removed.
23. Color coding the 2" valve prevents a situation in line 2-VC-OM-0158-E-A2-22.
24. Color coding the three 3" valves prevents a situation in line 3-VC-OM-0157-E-A2-22.
25. Color coding the 3" valve prevents a situation between it and 81X718.
OM-090113-PID-D
26. Color coding the 3" valve prevents a situation between the VCM condenser and the knock out drum.
NM-090100-PID-D
27. Color coding the 8" valve prevents a situation between it and 82H702.
28. Color coding the two 8" valves prevents a situation between them and 82H702.
29. Color coding of valve prevents a situation in line 4-VC-NM-0275-N-A2-22.
NM-090112-PID-D
30. Color coding the three 3" valves prevents a situation in line 3-VC-NM-0354-N-A2-22.
NM-090113-PID-D
31. PSV-0364 prevents a situation between the 4" valves on the outlet of FL-719.
32. Color coding the 6" valve prevents a situation between the RVCM receivers and transfer pumps.
ABD00224804
5 IMPACT STATEMENTS
A. Safety Statement Plant safety is the driving force behind this project. A thermal expansion near miss accident on a plasticizer line led to this investigation on VCM lines. This project reduces the chances for employee exposure to VCM.
B. Environmental Statement Although a VCM leak is just a SARA Title III reportable emission and no fine is levied, this project improves the environmental standing of the plant by reducing the potential to leak VCM.
ABD00224805
V. EQUIPMENT LIST
PSV-0001
Pressure Relief Valve
PSV-0003
Pressure Relief Valve
PSV-0005
Pressure Relief Valve
PSV-0007A
Pressure Relief Valve
PSV-0209
Pressure Relief Valve
PSV-0364
Pressure Relief Valve
PSV-0095
Pressure Relief Valve
PSV-0094
Pressure Relief Valve
PSV-0097
Pressure Relief Valve
ABD00224806
1
VISTA Vista Chemical Company GENERAL NGJN*ING Houston. rtxxs
specification sneer PROJECT no__________ A.F.6. NO
Prossuro Relief Valves
REQ. NO.
OATS zfzjjW APP O BY
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Ui 3 VALVE LOCATION
1
Ui 4 MANUFACTURER
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7 STATE
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6 REQUIRED CAPACITY ANQ UNITS
O.OS. G?K
o.oz
6 P/M
tn g MOL. WT
SP. GR.
62. S o.9o\
o 10 VISCOSITY AT RELIEVING TEMP.
F QaZo
it COMPRESSIBILITY FACTOR
12 OESiGN PRESS. OF EQUIPMENT P*!' <\
13 PRESS CPSKJ1
OPER. SET
> i 95
275 HO Z7S
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OPER. RELIEVING _______
a: 15 . CONSTANT BACK PRESSURE. PSK3
--
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42. S
o.9oi
0.195
42.5 0.90I 0.195
275 275
46 68 -
HS
2.7 5 Vo 21S
______ --
17 DIFFERENTIAL SET PRESSURE
-
-
IS ALLOWABLE OVERPRESSURE % 19 SLOWDOWN %
lO IO .
1o
20 COOE REQUIREMENT
s 21
EXPOSED AREA <*
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ENVIRONMENT FACTOR. F
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23 24
OTHER BASIS
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26 SEAT TYPE
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42 MANUFACTURER SHALL VERIFY SELECTION OF ORIFICE SIZE AND MATERIALS.
43 VALVES SHALL MEET OtUENSION REQUIREMENTS OF API RP-S2B.
44 VALVES SHALL MEET TEST REQUIREMENTS OF API RP-SZ7.
.
45 SEE BACK OF SPECIFICATION SHEET FOR ONE OEFlNmONS. (cup 46
O 47
48
49
SO St
(XI IMOtCATES MANUFACTURER TO QVE WORMAOON Vi MS QUOTATION.
SPEC NO. SHEET___
REV. OF _
4-436-S
ABD00224807
&
VISTA Vista Chemical Company GENERAL ENGINEERING HOUSTON. rexAS Pressure Relief Valves
ASZROCZki
SPECIFICATION SHEET
PROJECT NO___________
A.F.E. NO_______________
REQ. NO_______________
DATE Zl2-T-fcM
APP'O BY
MADE QY
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4 MANUFACTURER
S MOOEL NO.
6 R.UCO
7 STATE
8 REQUIRED CAPACITY ANO UMTS
9 MOCWT
1 SP.GR.
>0 VISCOSITY AT RELIEVING TEMP.
11 COMPRESSIBILITY FACTOR
12 DESIGN PRESS. OF EQUIPMENT
13 PRESS IPSJCI 14 TEMP HR
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15 CONSTANT BACK PRESSURE. PSJO
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--
16 VARIABLE BACK PRESSURE. PSIG
17 Differential set pressure
18 ALLOWABLE OVERPRESSURE %
19 BlOWOOWN *%
.*
20 COOS REQUIREMENT
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27 BONNET (OPEN OR CLOSED!
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28 WLET SIZE. RATING. FACING
29 OUTLET SIZE. RATING. FACING
30 CALCULATED AREA (H*!
31 ORIFICE LETTER
ACTUAL AREA (in2) -
32 BODY
BONNET
33 SEAT & OtSK
34 GUIOE 4 RING
35 SPRING
36 BELLOWS
37 LIFTING LEVER (PLAIN OR PACKEOl
38 GAG
39 CODE STAMP
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41 OTHER 42 MANUFACTURER SHALL VERIFY SELECTION OF ORIFICE SQE ANO MATERIALS.
!
43 VALVES SHALL MEET DIMENSION REQUIREMENTS OF API RP-S2A.
44 VALVES SHALL MEET TEST REQUIREMENTS OF API RP-S27.
.
45 SEE BACK OF SPECIFICATION SHEET FOR (JNE OEFWmONS.
46
47
48
49
SO
51
(xi iNOtCAfES manufacturer ro Give information in kcs quotation.
SPEC NO.. SHEET___
REV. Of__
4436-S \ 0 71
ABD00224808
9
VISTA
ABEKPEEkJ
Vista Chemical Company
CCN6RAI ENOJNg*r>G
Houston. rtXAS
Prosauro Rcllof Valves
PROJECT
TH El?HA L
specification sheet
project no___________
A.F.E. NO_______________
flea. no.
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MADE OY
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3 VALVE LOCATION
4 manufacturer
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7 STATE
6 REQUIRED CAPACITY AND UNITS
9 MOL. ot
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to VISCOSITY AT RELIEVING TEMP.
11 COMPRESSIBILITY FACTOR
12 DESIGN PRESS. OF EQUIPMENT
SET ^
13 PRESS IPSKS)
OPER.
14 TEMP m
OPER. RELIEVING
IS . CONSTANT SACK PRESSURE. PSU
IS variable back pressure, psig 17 DIFFERENTIAL SET PRESSURE
MAX
16 ALLOWABLE OVERPRESSURE *S
19 BLOWOOWN N
*
20 COOE REQUIREMENT
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24 25 06SK5N TYPE
SEAT TYPE
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28 INLET size, rating, facing
29 OUTLET SIZE. RATING. FACING
30 CALCULATED AREA (*)
31 ORIFICE LETTER
ACTUAL AREA Nr2!
32 BODY
33 SEAT 4 OtSK 34 GUIOE 4 RING
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35 SPRING
36 BELLOWS
37 LIFTING LEVER (PLAIN OR PACKED1
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41 OTHER
42 MANUFACTURER SKAU. VEfltfY SELECTION OF ORIFICE SIZE AND MATERIALS.
43 VALVES SHALL MEET DIMENSION RCOUIRCMENTS OF APt RP-U4
Of44 VALVES SHALL MEET TEST REQUIREMENTS API RP-557.
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SPEC NO. SHEET___
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. OF _
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ABD00224809
10
Page 1 ofl
\fir\~rk VINIA
T 1^/ # t
Vista Chemical Company Engineering Department
Houston, Texas
Relict Valve Calculation Sheet 1A Valve Orifice Area - Liquid
^lTHE^AL Tta.PF
, j~ Date 2.\ZZ-f'7^f Approved By MaH, Rv 6WU)
1 Item No. and Tag
- OGO )
2 Relieves Equipment No. GENERAL
3 Basis for Calculation
3-Vc\J& -oeo |
4 Manufacturer
5 Q = Flow Rate in U.S. Gallons Per Minute.
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
d> o3
7 Ps = Set Pressure. PSIG
8 P0 = Allowable Overpressure in PSl (Over Ps)
P, = Upstream Relieving Pressure, PSIG
9
V?o= (
J+(
)=
Z1S 2-8
3 03
SIZING OATA
10 PB = Back Pressure. PSIG
11
Kd
= Coefficient of Discharge: 0.65 for ASME Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR Kd if available.
Kw = Correction Factor Due to Back Pressure. If the Back Pressure is Atmospheric, 1^ = 1.0. Balanced Bellows Valves In Back Pressure
12 Service Will Require The Correction Factor Determined in Figure 31. Conventional Valves Require No Special Correction.
<4S 0.^5
1
13 A, = Assumed Orifice Area, First Guess from Orifice Letter/Area Chart.
14 p = Absolute Viscosity at flowing temperature in Centipoises.
2800 QG 2800 { 0 03 Ho-9dI )
15 R = Reynolds Number =----- -- - --;-------- --- -----------------rST" =
P s/A,
(D.I95 )( 0- II >M
OA\ 0. (95*
in o
16 Kv = Correction Factor Due to Viscosity as Determined from Figure 32.
o.9|
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure, 17 Kp = 1.0. For other Overpressures, Determine Kp from Figure 33.
o. y
18
SIZING FORMULA
19
Liquids (10 Percent Overpressure) ASME Code
q y^-----
A = Required Orifice Area. Sq. In. = --------------------j--__ ___ 38 Kd Kw Kv >/P1 - PB
( 38 ( )(
) ( ) 05 )( ){( )-(
)> ;5
Liquids - Non ASME Code (Piping, etc.)
q y^-----
A = Required 0nf.ee Area. Sq. In. - J8 ^ ^
i j
= ( O.05 )( 0.90, ,
=!
1 j 38 { o.ys )(1.9l )( 0.<e )( 1.25 ( Zis )-(
; 20
MAXIMUM FLOW RATE 21
Av= Orifice Letter Designation / Area Sq. In. Valve Maximum Flow Rate: GPM
**<
4-5)} 05
\ U j o . \f ]
1 28
:
1) Reference to figures and tables are API RP 520, Part 1.
NOTES 22 2) If Av > A, then choose a larger A, and repeat the calculation procedures.
j
i j
ABD00224810
Page 1 of 1
A\/lPTA
VIS 1
T 1 1/ V
Vista Chemical Company
Engineering Department Houston, Texas
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
p,ln[ aseifoee/U
Pmi,,,,
L THECAL ^ ,FF
.1 Date Z(Z2.fyff Approved 6v
MaHp_ Rv G W UJ
1 Item No. and Tag
rS\J - 0003
2 Relieves Equipment No. GENERAL
3 Basis for Calculation
S-vJC-'fS-O?
SIZING DATA
4 Manufacturer
S Q = Flow Rate in U.S. Gallons Per Minute.
6
G
Specific Gravity of Liquid at Flowing Temperature, Water = 1.0 at 70 deg F.
7 Ps = Set Pressure, PSIG
8 P0 = Allowable Overpressure in PSl (Over Ps)
P, = Upstream Relieving Pressure, PSIG
9
Ps + P0= (
>+(
)=
10 Pe = Back Pressure. PSIG
11
Kd
= Coefficient of Discharge: 0.65 for ASME Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR Kd if available.
Kw = Correction Factor Due to Back Pressure. If the Back Pressure is Atmospheric. K^, = 1.0. Balanced Bellows Valves In Back Pressure
12 Service Will Require The Correction Factor Determined in Figure 31. Conventional Valves Require No Special Correction.
F4tTi?i5 0'O3 3.^01 Z7S
_____ 2-8 303 43 0.^5
1
13 A, = Assumed Orifice Area. First Guess from Orifice Letter/Area Chart. 14 p = Absolute Viscosity at flowing temperature in Centipoises.
2800 QG 2800 ( 0-03. ){o-90l ) 15 R = Reynolds Number =----- .----- = ---------------- --------------rrr- ~
P <o.'95 H D-fi J0*5
O. ll 0.195*
in 0
16 Kv = Correction Factor Due to Viscosity as Determined from Figure 32. o.9|
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure. 17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
O , (c?
18
SIZING FORMULA
1 19
1 20 MAXIMUM j
FLOW 1 RATE j 21
i
i
Liquids (10 Percent Overpressure) ASME Code
q -----
A = Required Orifice Area. Sq. In. = ------ -------- ---. -- 38KaKwK. 7P,-P8
( ) ( ) 05
38 ( )( )( K( )-( )} :5
Liquids - Non ASME Code (Piping, etc.)
Q >/g-----
A = Required Onfice Area. Sq. In. - 3e ^ ^ ^ ^
` j
( O-? ) { 0,9ot ) 05
38 { o.feS )(1)0.91 )( O.lp )( 1.25 ( 7.1S )-( Av= Orifice Letter Designation / Area Sq. In. Valve Maximum Flow Rate: GPM
i)05
i 4*2 X 10
. ) / & . /1 |
= q^i A
,< > = ( t.Z-K'O * )
28
|
1) Reference to figures and tables are API RP 520. Part 1.
*|
NOTES 22 2) If A,, > A, then choose a larger A, and repeat the calculation procedures.
|
j
ABD00224811
IZ
Page 1 of i
X/lf'TA
AVT I1 SSi/
1 1/
V
Vista Chemical Company
EnB,neer`"a aP,rtn,"n`
Houston, Texas
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
p,int ftge?bEa/J
Prn'icrf M, thl L T rt E*N AL T?FL,FF
jTT
Dare 7. 2-2-/v^ Aoorovcd By Ry 6 w ^
1 Item No. and Tag
r*>\) - 0005*
2 Relieves Equipment No. GENERAL
3 Basis for Calculation
3-Vc-vJs- 000^
4 Manufacturer
SIZING DATA
5 Q = Flow Rate in U.S. Gallons Per Minute.
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
7 = Set Pressure, PSIG
8 Pc = Allowable Overpressure in PS1 (Over Ps)
P, = Upstream Relieving Pressure. PSIG
9
Ps + P0= (
)+<
)=
10 P0 = Back Pressure. PSIG
11
Kd
= Coefficient of Discharge: 0.65 for ASM6 Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR Kd if available.
Kw = Correction Factor Due to Back Pressure. If the Back Pressure is
12
Atmospheric. Kw = 1.0. Balanced Bellows Valves In Back Pressure Service Will Require The Correction Factor Determined in Figure
31. Conventional Valves Require No Special Correction.
0-03
*.9 0|
2.1S 2-R,
3 3
hIS 0.&5
l
13 A, = Assumed Orifice Area, First Guess from Orifice Letter/Area Chart.
14 p = Absolute Viscosity at flowing temperature in Centipoises.
2800 QG 2800 (0-03 ){o-90l )
15 R = Reynolds Number - --- "
,
,05 =
p VA
(0-/95 )( oil )os
16 Kv = Correction Factor Due to Viscosity as Determined from Figure 32.
0A\
0.195-
mo 0,91
Kp s Correction Factor for Overpressure. At 25 Percent Overpressure,
17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
0, L>
18
SIZING FORMULA
19
Liquids (10 Percent Overpressure) ASME Code
q ----
A = Required Orifice Area. Sq. In. = ----------------- ,---- -----
38 Kd Ky ^P,-Pe
( 36 ( ]{
) ( ) 05 )( ){( M
)}0;5
Liquids - Non ASME Code (Piping, etc.)
q
A = Required Or.f.ce Area. Sq. In. = J8 ^ ^ ^
j j
( ) ( o.9o, ,os
i 38 ( o.fcS )(\yo.0A )( o.k> K 1-25 ( Z1S 1-(
120
MAXIMUM FLOW RATE 21
Av= Orifice Letter Designation / Area Sq. In.
Valve Maximum Flow Rate: GPM
= 0 *'=<
*" > -
A ( l.ZK'O y )
^5)) 05
. J) / o . \ (
j
28 j
j! 1) Reference to figures and tables are API RP 520, Part 1.
|
NOTES
22 2)
If \ > A, then choose a larger A, and repeat the calculation
procedures.
ABD00224812
/3
Page 1 of i
\/IOTA
Vista Chemical Company p,lllt
VIS 1 A Engineering Department
^ ^L
TfniF.F
7I
1 V/ 1 / *
Houston, Texas
Z jT" Dare 2.| 2-2-/Vy Aoorovcd 8v
Relief Valve Calculation Sheet
Madc Rv 6 W UJ
1A Valve Orifice Area - Liquid
1
2 GENERAL
3
Item No. and Tag Relieves Equipment No. Basis for Calculation
-COO~7A 3_ dC -ooo7
SIZING DATA
4 Manufacturer
5 Q = Flow Rate in U.S. Gallons Per Minute.
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
7 Ps = Set Pressure, PSIG
8 P0 = Allowable Overpressure in PSl (Over Ps)
Pt = Upstream Relieving Pressure, PSIG
9
Ps + Po= <
>+<
>=
10 PB = Back Pressure. PSIG
Kd = Coefficient of Discharge: 0.65 for ASME Code Liquids and 0.62 11 for Non-ASME Code Liquids. Use MFGR Kd if available.
Kw a Correction Factor Due to Back Pressure. If the Back Pressure is Atmospheric. 1^ = 1.0. Balanced Bellows Valves In Back Pressure
12 Service Will Require The Correction Factor Determined in Figure 31. Conventional Valves Require No Special Correction.
F4t?T?iS 0.03 Z1S 2-8 303
1
(
13 At = Assumed Orifice Area. First Guess from Orifice Letter/Area Chart.
0.11
14 p = Absolute Viscosity at flowing temperature in Centipoises.
0.195-
2800 QG 2800 (O' 03 ){ o-9p f ) 15 R = Reynolds Number =----- 7==*= --:--------------------------rrr -
p (D-'95 )( d- M )0'5
in 0
16 Kv = Correction Factor Due to Viscosity as Determined from Figure 32.
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure. 17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
o.y
18
SIZING FORMULA
19
Liquids {10 Percent Overpressure) ASME Code
q -----
A = Required Orifice Area. Sq. In. = -------------------- y 38K,,KwKv VP.-Pb
( )(
38 ( ){ )( ){(
Liquids - Non ASME Code (Piping, etc.) A = Required Onfiee Area. Sq. In. =
) 05
H J)0:5
q
M^ ^
( ^^
( 0-? ) { 0,9o( ) 05
LX X to"*
2
MAXIMUM FLOW RATE 21
38 ( o.ys )(iye.9| )( o.b K 1.25 ( Z7S )-( Ay= Orifice Letter Designation / Area Sq. In. Valve Maximum Flow Rate: GPM
= Q Av = ( 0.03>2 ) (' o. (( )* = A ' ( ,,z.K'0 H )
^5 )>05
D / &.11
j
28 |
ij 1 1) Reference to figures and tables are API RP 520. Part 1.
i |
NOTES 22 2) If Av > A, then choose a larger A, and repeat the calculation
i
procedures.
|
ABD00224813
Page 1 ol
\nn~Tk
VISIA T 1/ V
V'sU Chemical Company
Engineering Department Houston, Texas
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
pt,,,, ASEfiDEE^f
Pmierr VirJUL. THERMAL K&LtfiF 77j '
Dare 2/,0/7** Anoroved 6v
Made ,,flv /h*W..iWu
t
2
GENERAL 3
4
5
Item No. and Tag Relieves Equipment No. Basis for Calculation Manufacturer Q = Flow Rate in U.S. Gallons Per Minute.
V-6V- d>zo9
4-MC-OM-OZ?
FAWhS o. c>oJ
6
G
= Specific Gravity of Liquid at Flowing Temperature.
Water = 1.0 at 70 deg F.
o. 9o 1
7 Ps = Set Pressure. PSIG
8 P0 = Allowable Overpressure in PSl (Over Ps)
215 28
9 P, = Upstream Relieving Pressure. PSIG
Ps + (3c= <
>*<
10 P6 = Back Pressure. PSIG ( Mx.
>s
3o3
SIZING DATA
Kd = Coefficient of Discharge: 0.65 for ASM6 Code Liquids and 0.62 11 for Non-ASME Code Liquids. Use MFGR Kdif available.
Kw = Correction Factor Due to Back Pressure. If the Back Pressure is Atmospheric. K^, = 1.0. Balanced Bellows Valves In Back Pressure
12 Service Will Require The Correction Factor Determined in Figure 31. Conventional Valves Require No Special Correction.
1
I
13 A, = Assumed Orifice Area, First Guess from Orifice Letter/Area Chart.
o.ll
14 p = Absolute Viscosity at flowing temperature in Centipoises.
0.195
15 r
2800 QG
7A~
2800 (
)(0.9o| )
( o.|95 )( o.ll I0'5
3 So
16 Kv = Correction Factor Due to Viscosity as Determined from Figure 32.
0.83
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure, 17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
O. (o
Liquids (10 Percent Overpressure) ASME Code
Q j-q-------
A = Required Orifice Area. Sq. In. = --------------------------- >
38KdK.K, 7P,-Pb
18
( ) ( ) os
SIZING FORMULA
j 19
38(e.i, )( )( ){(
Liquids Non ASME Code (Piping, etc.) A = Required Onfice Area. Sq. In. =
=(
) ( o.9ol ) os
M )):s
qi
,, ^ ^ ^ yOsP^
.
j
! if X'Q
1
I. 38 ( o.b&>.b ){ 1.25(2-75 H*/5 l>os i------------------------------------------------------------------------------------------------------------------------------------------------ 1----------7-------------------
120 1 Av= Orifice Letter Designation l Area Sq. In.
.)/>. 1 \
MAXIMUM
FLOW
Valve Maximum Flow Rate: GPM
'
j.
RATE 21
= Q Av = ( o.oo*? j !___* = A ( -l.lyr.-^)
27
i
j
i 1) Reference to figures and tables are API RP 520. Part 1.
J
NOTES 22 2) If \ > A, then choose a larger A, and repeat the calculation
procedures.
i
j
ABD00224814
>5
Page t of t
\ lip-rl
V7 I .VS/ I1 A/ V
Vista Chemical Company
Engineering Department Houston, Texas
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
p,lflt AQErtDEt//
J ,Pmi.rr ViNUl. TH#?AiAt. KSLLfiP . Dafc2/,0/9 Annroved By Mad,e ,,Bv hWW
1 Item No. and Tag
2 Relieves Equipment No. GENERAL
3 Basis for Calculation
4 Manufacturer
SIZING DATA
5 Q = Flow Rate in U.S. Gallons Per Minute.
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
7 Ps s Set Pressure. PSIG
8 Po a Allowable Overpressure in PSI (Over Ps)
P, = Upstream Relieving Pressure. PSIG
9
Ps + Po^ (
J+<
=
10 P0 = Back Pressure. PSIG (Mo.it.. vUt-'^We)
11
Kd = Coefficient of Discharge: 0.65 for ASME Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR Kdtf available.
Kw a Correction Factor Due to Back Pressure. If the Back Pressure is
12
Atmospheric, K^, = 1.0. Balanced Bellows Valves In Back Pressure Service Will Require The Correction Factor Determined in Figure
31. Conventional Valves Require No Special Correction.
o.oo ZO. 9o |
21S 28
So3 HS o, y>5
i
13 A, a Assumed Orifice Area. First Guess from Orifice Letter/Area Chart.
14 p = Absolute Viscosity at flowing temperature in Centipoises.
2800 QG 2800 (
)(6.9o! )
15 R a Reynolds Number =---- r--- = ------------ -- -------- :--ttt-- =
P VAT
( 0-195 )( o.\\ )S
16 Kv a Correction Factor Oue to Viscosity as Determined from Figure 32.
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure. 17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
O. 1l o. 195"
18
o.s<r
O. (o
Liquids (10 Percent Overpressure) ASME Code
q -----
A = Required Orifice Area. Sq. In. = -------------------18 3KsKwKv yp,-pa
( ) ( ) 05
SIZING FORMULA
19
38(0.1, )( )( )(( Liquids - Non ASME Code (Piping, etc.)
A = Required Onf.ce Area. Sq. In. =
= ( e.ooi- ) ( o.9c> ) 05
H I)0:5
Q J~G-----
1
,, ^ ^ yOSP^- P~ j
^!
/.Vi^rCl
. 38 ( o.b&)(iXo.ffJ( P.b ){ 1-25 (2TS )-( 45 ))05
20
MAXIMUM FLOW RATE 21
Av= Orifice Letter Designation / Area Sq. In.
Valve Maximum Flow Rate: GPM
= O *.=, ,<O.ooz. -> = A ( lA%t0 r)
. D / 0.11
i
\!o
|
j . 1) Reference to figures and tables are API RP 520. Part 1.
j
NOTES 22 2) If Ay > A, then choose a larger A, and repeat the calculation procedures.
\ |
ABD00224815
I (o
Page l ofi
\/|A-pJi
VS A T 11/ V
Vista Chemical Company
Engineering Department Houston, Texas
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
,,in[ ASekdewT
Pmi,,t
rHBRMAL KSLtKf
7TT-------------------
Date 2 /,0/ 7 Aonroved Bv
Mad,e nfiv /hVWhW.i
1 2 GENERAL 3
Item No. and Tag Relieves Equipment No. Basis for Calculation
V-W- do95" -VC
4 Manufacturer
5 Q = Flow Rate in U.S. Gallons Per Minute.
0,03
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
O. 9o |
7 Ps = Set Pressure. PSIG
6 Po = Allowable Overpressure in PSI (Over Ps)
Pt = Upstream Relieving Pressure. PSIG
9
Ps + P0= (
>+(
)=
21S 28
3o2>
SIZING DATA
10 Pfl = Back Pressure. PSIG ( Mo.*. vUrWle.)
11
Kd
= Coefficient of Discharge: 0.65 for ASME Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR K^/f available.
1^ = Correction Factor Due to Back Pressure. If the Back Pressure is
12
Atmospheric. 1^ = 1.0. Balanced Bellows Valves In Back Pressure Service Will Require The Correction Factor Determined in Figure
31. Conventional Valves Require No Special Correction.
Vs A 65"
1
13 A, = Assumed Orifice Area. First Guess from Orifice Letter/Area Chart.
o. 1
14 p = Absolute Viscosity at flowing temperature in Centipoises.
0.195"
15 1
2800 QG p
2800 ( o.o2> )(
)
( o.|95 )( o.[\ )05
ino
16 Kv = Correction Factor Oue to Viscosity as Determined from Figure 32. Kp = Correction Factor for Overpressure. At 25 Percent Overpressure.
17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
o.9f
O. io
18
SIZING FORMULA
19
Liquids (10 Percent Overpressure) ASME Code
q y^----
A = Required Orifice Area, Sq. In. ** ------------ -------.
38K.K.K, VP,-PB
( )( 38 OU. )( ){ )
Liquids - Non ASME Code (Piping, etc.)
A = Required Onfice Area. Sq. In. =
) 05
M )) :5
q y^----
,
38 ^ Wp y^p",^ j
_
= ( o.o^ ) ( o.9o l ) 05
! IX *t0
38 ( o.b& )(iXo.9/)( o.b 1(1.25(2-75 )-( *5 )}05
20 1 Av= Onfice Letter Designation / Area Sq. In.
MAXIMUM FLOW
Valve Maximum Flow Rate: GPM
RATE 21 = Q A. =( 0.03 , ( O.ll
)=
A
( f.Z
i
'
1) Reference to figures and tables are API RP 520. Part 1.
/ 0,\\ j
20
1
j
NOTES
22 2)
If Av > A, then choose a larger A, and repeat the calculation
procedures.
j
|
ABD00224816
\ II OTA
\Y/ I1 OI1/V/
Vista Chemical Company EngiHneoeursintogn.DTeepxaarstment
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
a
Page 1 of
Rl,,t ABESDEEaT H6SaA-. .,, __
Date 2/,0/9 Aooroved By Made _Bv /h'W..hWi
,
1 Item No. and Tag
2 Relieves Equipment No. GENERAL
3 Basis for Calculation
4 Manufacturer 5 Q = Flow Rate in U.S. Gallons Per Minute.
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
7 Pg = Set Pressure. PSIG
8 P0 = Allowable Overpressure in PSI (Over Ps)
SIZING DATA
P, = Upstream Relieving Pressure. PSIG
9
Ps + Pe= (
)+(
)=
10 P6 = Back Pressure. PSIG ( Max. \Zra-Vle)
11
Kd
= Coefficient of Discharge: 0.65 for ASME Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR Kd if available.
Kw = Correction Factor Due to Back Pressure. If the Back Pressure is
12
Atmospheric, = 1.0. Balanced Bellows Valves In Back Pressure Service Will Require The Correction Factor Determined in Figure
31. Conventional Valves Require No Special Correction.
13 A, = Assumed Orifice Area, First Guess from Orifice Letter/Area Chart.
14 p 15 R
= Absolute Viscosity at flowing temperature in Centipoises.
2800 QG 2800 (0.014 )( O.Jol )
= Reynolds Number =----- 7==- = 1p
--(;---o--.-|-9--5r*--)-(---0---i-i-l:--)7o75s-7- =
16 Ky = Correction Factor Oue to Viscosity as Determined from Figure 32.
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure, 17 Kp = 1.0. For other Overpressures, Determine Kp from Figure 33.
7-SV- 0o94
0.01$
o. 9o | 21S 28 3oS Hs
1 o. 11 0.195'
s4L O.&V O. (o
Liquids (10 Percent Overpressure) ASME Code
Q y^-----
A = Required Orifice Area, Sq. In. - ------------ -------. - ypt-PB
18
( ) ( ) 05
SIZING FORMULA
19
38(e.i. )( )( )(( Liquids - Non ASME Code (Piping, etc.)
A = Required Orifice Area. Sq.
= ) ( 0.90 t 1 os
)-( )} :5
q y^-----
,
38 Ka W,, V^SP^l
= I 1 Klv
1 \ 38 ( o.b& H0C0.S1K >.b R1.25(2TS
20 j Ay= Orifice Letter Designation / Area Sq. In.
MAXIMUM FLOW
Valve Maximum Flow Rate: GPM
RATE 21 = Q A =( O.oi4 , < g'11
1=
A ( 6.<*> 5 >
)-( */5
>}05
| D / O, l \
|
ZS
J
j 1J Reference to figures and tables are API RP 520. Part 1.
j
NOTES 22 2) If \ > A, then choose a larger A, and repeat the calculation procedures.
j
j
ABD00224817
Page I of i
A\ MATl
Viol
Vista Chemical Company
E"9,;;r;:D;::ir'cnt
Relief Valve Calculation Sheet 1A Valve Orifice Area - Liquid
AQEKDEEtf
P Haro 2/,P/9* Anoroved By
M.id, eBv /(>W,W.i
'
'
1 Item No. and Tag
2 Relieves Equipment No. GENERAL
3 Basis for Calculation
4 Manufacturer
5 Q = Flow Rate in U.S. Gallons Per Minute.
6
G
= Specific Gravity of Liquid at Flowing Temperature. Water = 1.0 at 70 deg F.
7 Ps = Set Pressure. PSIG
SIZING DATA
8 Pe = Allowable Overpressure in PSI (Over Ps)
P, = Upstream Relieving Pressure, PSIG
9
PS*P0= (
J+(
)=
10 PB = Back Pressure. PSIG ( Mvt.. vf*p%a.\ale)
11
Kd = Coefficient of Discharge: 0.65 for ASMS Code Liquids and 0.62 for Non-ASME Code Liquids. Use MFGR Kd If available.
Kw s Correction Factor Due to Back Pressure. If the Back Pressure is
12
Atmospheric. K^, = 1.0. Balanced Bellows Valves In Back Pressure Service Will Require The Correction Factor Determined in Figure
31. Conventional Valves Require No Special Correction.
13 A, = Assumed Orifice Area, First Guess from Orifice Letter/Area Chart.
14 p = Absolute Viscosity at flowing temperature in Centipoises.
15 3
2800 QG p V^T
2800 ( e.oZ. }(0.9l } ( o.|9S )( 0.ll )os
16 Kv = Correction Factor Due to Viscosity as Determined from Figure 32.
Kp = Correction Factor for Overpressure. At 25 Percent Overpressure, 17 Kp = 1.0. For other Overpressures. Determine Kp from Figure 33.
V^-0091
6-Uc-o<H- oo97
Q.o?_ 0. 90 |
21S
28
3<?3 4s
>.1,5
1
0. 1 0.195*
78o O.g? 0. (0
Liquids (10 Percent Overpressure) ASME Code
Q -----
A = Required Orifice Area, Sq. In. = --------------------- 18 36 Kd K. K. yP,-PB
( )( ) 05
j
SIZING FORMULA
19
38 (o.u )(
)(
){(
H
)> :5
Liquids - Non ASME Code (Piping, etc.)
q -----
1
A - Required Orifice Area. Sq. In. = ----- ----------------7====-; 38KoK.KvKpyi.25Ps-P0|
=(
) ( 0.9o\ ) 05
^f
S.SrfD
' 38 ( o.feSHOMfH O.fe )( 1.25(2*75 )-( 4s )) 05
20
MAXIMUM FLOW RATE 21
Av= Orifice Letter Designation / Area Sq. In.
Valve Maximum Flow Rate: GPM
= Q Ay = (
g^
a (g.S-X/o ' )
_
t "Q / 0.11
j
\ 2h | ^0
!i 1) Reference to figures and tables are API RP 520. Part 1. .
NOTES 22 2) If Ay > A, then choose a larger At and repeat the calculation procedures.
j
tt
|
ABD00224819
Numbering System
To simplify the selection and specifying of Farris Pressure Relief Valves, use the following type numbering system. The type numbering system is ideal as the digits which comprise a specific type number have a distinct signi ficance. The digits describe the basic valve series, orifice, seat and internal construction, inlet temperature range, body, bonnet and spring material, inlet flangeclass as well as Code liquid design.
Prefix (if applicable)
H --Set pressures beyond the scope of ANSI/API Std. 526 (Q, R & T orifice only)
HTF--Valve suitable lor heat transfer fluid service SJ -- Integral steam jacket option
First Two Digits
Always 26--designates 2600 Series Cast Steel Flanged Pressure Relief Valves.
Third Digit D-E-F, etc.--designates orifice letter
^8wrgnatiog%
Designation
P'rificelAfea,. - & Orifice
ifeM11'1
Letter
Orifice Area WSqUiffc#-
Sixth Digit --Inlet Class
Desig nation k. 0
1
2 3
ANSI Nominal Inlet Flange-Class;.-
150
300 Light Weight Valve 300 Heavy Weigh! Valve
600
Desig ANSI Nomirialjlnlet nation- Ftarige)Ctass^
4 900
5 1500
6 2500
Nolo dial this drgii does not describe the outlet llnngc class. RF facing will be assumed unless otherwise siiecilicd or sullix code is used. The standard outlet provided lor a given lype andonlicciSR|>ocilicd on the selection tables and chans on pages 24-3?
Seventh Digit (if applicable)
L-ASME Code certified design for liquid service only.
As an example, a conventional Farris Pressure Relief Valve can be specified as follows:
Type 26FA13 indicates a conventional 2600 Series flang ed valve wilh F orifice. 1V2" class 600 raised face inlet, 2" class 150 raised face outlet with carbon steel body, bon net and spring.
Additionally, a suffix code has been devised to simplify your requirements for optional extras or accessories, which consists of three digits indicating inlet facing, cap and lever construction and test gags.
D 0.110 L 2.853 -
E
0.196
M
3.60
F
0.307
N
434
G 0.503 P
6.38
H 0.785 Q 11.05
J 1.287 R 16.0 K 1.838 T 26.0
Note: Since each type number is available in only one inlet size, the type number automatically indicates the inlet size. See selection tables and charts on pages 24-37.
Fourth Digit
A--Conventional construction
B--BafanSeal construction
Inlet facing (1st Digit)
Special (See Note 2 page 11) ........................................ 0 Raised Face, ANSI Std......................................................1 ^ Large Female, ANSI Std................................................... 2 Small Male. ANSI Std........................................................ 3 Small Female, ANSI Std..................................................... 4 Large Tongue, ANSI Std.....................................................5 Large Groove. ANSI Std.....................................................6 Small Tongue. ANSI Std..................................................... 7 Small Groove. ANSI Std..................................................... 8
Ring Joint (Octagonal) ANSI Std.....................................9
125 AARH Smooth Finish, RF........................................ A 63 AARH Smooth Finish, RF ......................................... H
Although not applicable to the inlet facing only, the follow ing 1st Digit letters are also used:
C--Conventional with 0 Ring Seat Pressure Seal D-BalanSea! with O Ring Seat Pressure Seal E --BafanSeal with Auxiliary Balancing Piston F--BaianSeal with Auxiliary Balancing Piston and O Ring
Seat Pressure Seal
125 AARH (Outlet only)....................................................B 125 AARH (Inlet & Outlet)................................................C 63 AARH (Outlet only)......................................................J 63 AARH (Inlet & Outlet)..................................................K
Cap and Lever Construction (2nd Digit)
Fifth Digit--Temperature and Material
Up! 1
Minus 20 to 450
M7 ; . Material
r?Body & Bonnet Carbon Steel
Spring'? ' -*-
Carbon Steel
2 451 to 800 Carbon Steel High Temp Alloy
3
801 to 1000
Chrome Moly. High Temp Alloy
Steel
6 Minus 21 to 3W% Nickel Steel Carbon Steel Minus 75
7
Minus 76 to Minus 150
3W% Nickel Steel
Austenitic Stainless Steel
8 Minus 151 to
Austenitic
Austenitic
Minus 450
Stainless Steel Stainless Steel
4 1001 to 1200
5 1201 to 1500
*
* Temperature ranges 4 and S are beyond the scope o' (his catalog. Materials
10 and set pressure/llange availability on application.
Screwed Cap......................................................................2 Bolted Cap........................................................................ 3 Packed Lever......................................................................4 L Type Packed Lever........................................................ 5 R Type Packed Lever........................................................ 6 Open Lever........................................................................ 7 Remotor (with Packed Lever)...........................................8
Accessories (3rd Digit)
Without Gag .......................................................................0 Gag...................................................................................... 1
The suffix codes will always be used by our order process ing department, and although not necessary in your specification, if used, will help you in eliminating wordy descriptions on your order write-ups, i.e. a 26FA13 with ring joint inlet & packed lever and test gag would simply be written 26FA13-941.
Further, where metallurgy for corrosive fluids is desired, the following page illustrates the optional suffixes available to aid in completing the type number.
ABD00224820
Optional suffix code: (Materials for Corrosive Service)
;,U 'Special Material Oescr|ption^v:-.v^^
Designation
` '
Internal Parts
v'-
vBonnet-`Cap;' Nozzle &'Disc
Other
Springs & Buttons '' . ;
/HI
Standard
Hastelloy C
Standard
Standard
/H2
Standard
Hastelloy C
Hastelloy C & Monel
316 St. St. Buttons Carb. St. or High Temp. Alloy
Nickel Plated Spring
316 St. St. Buttons
/H3
Hastelloy C
Hastelloy C Hastelloy C Carb. St. or High Temp. Alloy
Nickel Plated Spring
/H4
Hastelloy C
Hastelloy C Hastelloy C
Hastelloy C
------/-M--l-
/M2
Standard Standard
Monel Monel
Standard Monel
Standard
316 St. St. Buttons Carb. St. or High Temp. Alloy
Nickel Plated Spnng
/M3 Monel
Monel
Monel
316 St. St. Buttons Carb. St. or High Temp. Alloy
Nickel Plated Spring
/M4
Monel
Monel
Monel
Inconel Spring Monel Buttons
/SI Standard /S2 Standard
316 Standard
Standard
316 St. St. Buttons 316 316 Carb. St. or High Temp. Alloy
Nickel Piafed Spring
/S3 316
316 St. St. Buttons
316 316 Carb. St. or High Temp. Alloy Nickel Piafed Spring
p* /S4
316
316
316
316
/S5 Standard
316 & Monel 316 with Incone!
625 Bellows
Standard
/S6 Standard
316 Standard
Standard
/S7 Standard
316 & Monel 316 with 316L
Annealed
Bellows
Standard
For detailed bill of materials, see pages 16-21. Example: If Haslelloy C nozzle and disc are required, above type number now becomes 26FA13-941/HI.
General Notes:
1. Other special materials such as 316L St. St. and Alloy 20 as well as non-standard outlet flange classes are available on application. In these instances, the optional
suflix code /SP is used with a brief description of the special requirement(s).
2. Special inlet facings include but are not limited to socket or but! weld ends, lens joint and Graylocfittings.
Effective Orifice Selection
Effective Orifice Area
Sq. In.
Steel 2600 Series All Fluids Ref. Page Nos.
Orifice Desig nation..
0.110
24
D
0.196
25
e
0.307
26
F
0.503
27
G
0.785
28
H
1.287
29
J
1.838
30
K
2.853
31
L
3.60 32 M
4.34
33
N
. 6.38
34
P
11.05 35 Q
16.0 36 R
26.0
37 T
57.26 W
93.6 * Wi
101.8
*X
128.8
*Y
159.0
Z
'Farris Super Capacity Orifices. Theseorifice designations are only supplied in limited scope and areitlustrated in a separatecatalog available upon request.
Ordering Information
To properly process your order and avoid delay please
specify the following:
1. Quantity*.
2. Inlet and Outlet Size
3. Farris Type Number*. 4. Inlet and Outlet Flange Class and Facing. 5. Materials of Construction, if other than Standard. 6. `O'-Ring Seat Pressure Seal Material, if required.
7. Set Pressure*. 8. Maximum Inlet Temperature*.
9. Allowable Overpressure*. 10. Fluid and Fluid State*. 11. Backpressure, superimposed constant and/or variable and
Built-up*.
12. Required Capacity*.
13. Accessories:
(a) Bolted Cap. Open Lever (c) V Lever,
or Packed Lever.
(d) `R* Lever.
(b) Test Gag.
(e) Remotor.
14. Code Requirements, if any.
* As a customer service we verify your selection and sizing, therefore if this service is desired you must include this information.
Replacements
Valves--If an exact replacement valve is required the valve type, size and serial number must be specified, to assure proper dimensions and material being supplied. If a specific valve has become obsolete, a proper recom mendation of the current equivalent will be made if possible.
Spare Parts-When ordering parts use part names as listed in the bills of material in this catalog. Specify valve type, size and serial number. If serial number is not available, the original Farris factory order number will assist in our supplying the proper part and material.
Springs--Order as an assembly to include spring with upper and lower spring buttons. Specify valve type, size, serial number, set pressure and back pressure, if any.
Note: if valve modification Of set pressure changes are required, consideration must be given to correct the nameplate and other data.
ABD00224821
22 TIE-IN LIST 1. Line 1-VC-VS-0001-N-A2-22 will tie in with
2-VC-VS-0063-N-A2-22. 2. Lines l-VC-VS-0002, 0003, and 0004-N-A2-22 will tie
in with 1-VC-VS-0001-N-A2-22. 3. Line 1-VC-OM-0001-N-A2-22 will tie in with
2-VC-OM-0109-N-A2-22. 4. Lines 1-VC-OM-0002-N-A2-22 and 1-VC-OM-0004-N-A2-22
will tie in with 1 1/2-VC-OM-0105-N-A2-22. 5. Line 1-VC-OM-0003-N-A2-22 will tie in with
1 1/2-VC-OM-0106-N-A2-22. 6. Line 1-VC-NM-0001-N-A2-22 will tie in with
1-VC-NM-0368-N-A2-22.
ABD00224822
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ABD00224823
DRAWINGS P&ID's 1. VS-090101-PID-D 2. VS-090102-PID-D 3. VS-090103-PID-D 4. VS-090105-PID-D 5. OM-090100-PID-D 6. OM-090111-PID-D 7. OM-090112-PID-D 8. OM-090113-PID-D 9. OM-090115-PID-D 10. NM-090100-PID-D 11. NM-090112-PID-D 12. NM-090113-PID-D
ABD00224824
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ARD00224825
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ABD00224827
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VCM STORAGE SPHERE
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RECOVERED VCM CONDENSER
EX-008
RECOVERED VCM CONDENSER
ABD00224829
ABD00224831
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ABD00224832
ABD00224833
ABD00224834
PROCESS k INSTRUMENTATION DIAGRAM
NEW MOOUIE RECOVERED VCM CONOENSERS
ABD00224835
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