Document VKzK1QgXLGpRb2ymnqMKv24Og

STANDARD OIL COMPANY OF CALIFORNIA ENGINEERING D?"'RTMENT - SAN FRANCISCO SPECIFICATION i,w, EG-2350-A . FEBRUARY 2, 1971 SECTION A PAGE 1 OF 10 CONTROL VALVE CONSTRUCTION SECTION A TECHNICAL REQUIREMENTS 1.0 SCOIE This Specification covers Company's minimum requirements for the design, fabrication and Inspection of all valves used for control, except gate valves. Air-operated diaphragm actuators, piston actuators1 and control valve positioning devices are also covered by thia Specification. Electric-operated control valves shall meet the requirement* of this Specification insofar as they are applicable. 2.0 BODY 2.1 Valve bodies and bonnets shall conform to the following material specificatIona, aa applicable: Carbon Steel Castings ` ASTM-A216, Gr WCB Carbon Mo Forgings Castings ASTM-A105, Gr II ASTM-A217, Gr VC1 1 . l- Cr Mo Forgings Castings ASTM-A182, Gr FI ASTM-A217, Gr WC6 5 Cr Mo Forgings Castings ASTM-A182, Gr Fll ASTM-A217, Gr C5 9 Cr-1 Mo Forgings Castings ASTM-A182, Gr F5 ASTM-A217, Gr C12 (9 Chrome) Forgings ASTM-A182, Gr F9 Haatelloy B of C Castings ASTM-A494 304 SS Castings ASTM-A351, Gr CF8 Forgings ASTM-A182. Gr 304 Monel (Manufacturer's Standard) 316 SS Castings ASTM-A351, Gr CF8M Forgings ASTM-A182, Gr F316 347.. SS Castings ASTM-A351, Cr CF8C Forgings ASTM-A182, Gr 347 Acceptable material subatitutea are: (a) 316 SS in place of 304 SS or 9 Cr or 9 Cr-1 Mo. (b) 5 Cr in place of l or 2^ Cr (on flanged valves only). CHEVB8 5638 STANDARD OIL COMPANY 0? CALIFORNIA ENGINEERING DEP^'^TMENT SAN FRANCISCO SPECIFICATION I. , EG-2350-A FEBRUARY 2, 1971 " SECTION A PAGE 2 OF 10 2.2 Body bolting end packing-flange studs shall conform to the following specifications: ASTM-A193 - Alloy Steel Bolting for High Temperature Service. * ASTM-A194 - Carbon and Alloy Steel Nuts and Bolts for High Pressure and High Temperature Service. Except that atuda and nut* for Auatenitic Stainless Steel and Nickel Alloy VBlve* shall be of the same nominal chemistry ea the valve body. 2.3 All flanged connections and pressure-temperature ratings shall con form to ANSI Bl6.5, except as follova: (e) Flanged valves, 4 inch size and smaller shall have rating at least 300 lb for steel bodies and 250 lb for iron bodies. (b) Flange facings for "raised" and "flat faced" flanges shall be "smooth - 250 AARH maximum" in accordance with MSS-SP-6. A 25O RMS smooth finish is an acceptable alternate as judged by comparison with Visual Standards such aa "General Electric Standard Roughness Specimens." (c) "Flangeless" type bodies such as wafer-butterfly, ball, etc., shall have body rating and facing that meets pipe specification. These valves shall be furnished with thru bolt-studs and nuta. (d) Threaded-end valves shall have internally tapered threads in accordance with ANSI B2.1 and minimum body rating of 600 lb in steel or 250 lb in iron. Threaded valves shall be allowed only in body sizes 1^ inch and less. ' (e) "Welded-on" flanges and similar fabricated body constructions are only acceptable by prior agreement with COMPANY. 2.4 End Connections shall be 1-inch minimum except when the line size is smaller. Odd body sizes, such as l, 2^ and 5-inch shall not be used. 2.5 Face-to-face dimensions shall conform to ANSI B16.10 (equel to ISA RP 4,1,IF) wherever practical. 2.6 Globe valves shall have a bolted-bonnet with confined gasket. Gasket material shall be the manufacturers standard providing it meets the requirements specified on the purchase specification sheet attached to the Agreement to which this Specification applies. 2.7(a) Extension-bonnets shall be provided where specified. Where possi ble valves in these services shall be provided with packing and CHEVB8 5639 STANDARD OIL COMPANY OF CALIFORNIA ENGINEERING DElf TMKNT - BAN FRANCISCO SPECIFICATION No, EG-2350-A FEBRUARY 2, 1971 SECTION A PAGE 3 OF 10 lubricant designed to withstand the process fluid temperature, with out consideration of the possible radiation losses due to an exten sion bonnet. * 2.7(b) Bellows-aeal type bonnets shall be provided where specified. As a precaution against bellows failure, the bonnet shall be provided with "back-up" packing to seal the valve stem and bonnet, and a plugged pressure test connection. 2.8 Lubricators and isolating valves shall be furnished with all valves requiring stem lubrication. One year's supply of lubricant shall be furnished with each lubrica tor. 2.9 Direction of flow shall be caat or stamped on the valve body. TRIM 3.1 Globe valves having "cage" type trim shall meet the following minimum requirements: (a) Controlled compression type gaskets used as a pressure seal between adjoining portions of the trim, or body and trim, shall not be subject to inner valva seat loading and unloading. (b) Cage and plug shall be hard stainless ateel as a standard. Coefficients of thermal expansion for cage and plug shall be .. similar, so that required clearances are maintained over the - range of operating temperatures. (c) Reduced trim for two nominal sizes smaller than valve body size shall be available as a standard option. (d) Valve stem shall be threaded and pinned to the valve plug. It shall be hardened stainless steel as standard, having a finish of 8 micro inches RMS or less. (e) Flow characteristic shall be obtained by means of "shaped cage ports" rather than a "shaped plug with rectangular ports." 3.2 Globe valves having conventional plug and seat rings shall meet the following minimum requirements: . (a) Double seated valves shall be top and bottom guided, (b) Single seated valves shall be top and bottom guided; or top guided only, providing the guide post has sufficient diameter v to provide lateral stability to the valve plug. CHEVB8 5640 STANDARD OIL COMPANY OF CALIFORNIA ENGINEERING DEf ''TMENT - SAN FRANCISCO SPECIFICATION lw. EG-2350-A FEBRUARY 2, 1971 SECTION A PAGE 4 OF 10 ' (c) Plug and Beat ring! shall be hard stainless steel as standard. (d) Hardened guide material shall be 350 BHN minimum, with a _ differential hardness not less than 125 BHN between sliding* metal '' surfaces. , (e) Valve stem shall be threaded and pinned to the valve plug. It shall be hardened stainless steel as standard having a finish of 8 micro inches or less. The plug shall be reversible in the field by removal of the pin and valve stem. (f) Bonnet and bottom flange, where supplied, shall be interchange* able so as to permit reversal of the valve action without addi tional parts or alterations. 3.3 Ball control valves shall meet the following minimum requirements: (j.) The ball plug shall rotate through 90 and its surface shall - be wiped clean by the shearing action of a seal ring, to prevent accummulation of solids and damage to the ball surface. (b) The ball shall be designed to control flow in either direction. The seal ring shall provide reasonable shut-off when pressure is applied to the body in the reverse direction. (c) Bell shaft shall be 17-4PH hardened stainless steel ss a standard. The ball plug shall be 316 SS with a polished chromium-plated surface as standard. Other trim parts shall be hardened SS unless specified otherwise. ^ (d) Spline typa connection shall be provided between ball plug, shaft and actuator. Shear pins or keys are not acceptable. (e) Ball plug position shall be indicated by an engraved marking or mechanical indicator connected to the ball shaft. 3.4 Butterfly control valves shall meet the following minimum requirements: (a) Heavy duty flangeless 'wafer' conatruction shall he standard. (h) Shaft ahall be 17-4FH hardened stainless steel with plain stainless steel inboard bushings and bronze outboard sleeve bearings. Provision shall be made for bearing lubrication. CHEVB8 5641 .t.Anujwu uxn COMPANY CF CALIFORNIA ENGINEERING Bf "'RTMENT - SAN FRANCISCO SPECIFICATION 0 EG-2350-A FEBRUARY 2, 1971 SECTION A PAGE 5 OF 10 In cases where the preaaure drop across the vane la high, where extension bonnets are supplied, or for valves that have special tight shut-off features such as elastomer lining, outboard bearings shall be of the precision roller type. ' (c) Butterfly valves shall normally be installed with the shaft in the horizontal plane. Thrust bearings designed to support the weight of shaft and vane shall be provided where the shaft is not so mounted. (d) Shaft shall have spline or keyway connection with actuator that will allow valve action to be easily changed. (e) Vane position shall be Indicated by an engraved mark on the end of the ehaft. (f) Vane shall be carbon steel unless specified otherwise. f (g) Vane shall be pinned to the shaft so that excessive vane torque will shear the pina before rupture of vane or ahaffc. 4,i 1 Recommended stem or shaft packing and lubricants are as follows: Servi.ce Air Ammonia '"phalt & Tars Aromatic Solvents (as benzene, toluene, etc.) to 600F Chlorine Liquid end Chlorine Gas Hydrocarbon Liquids to 600F. LPG, fuel & lube oil, crude distillates Packing Garlock 256 or John Crane 6AM Garlock 144, Raybestos Manhattan 1223 Garlock 256 or l44 Garlock 256 or l44 John Crane C-98 Garlock 256 or l44 John Crane 6AM lubricant Rockwell 234 Rockwell 421 or 147 Rockwell 555 Rockwell 755 Rockwell 183 a Rockwell 555 . CHEVB8 5642 Service Gasoline, Kerosene, mineral oil* naphthas Hydrocarbon gas Hydrochloric Acid and Hydrochloric Acid Hydrocarbon Mixtures Hydrofluoric Acid oO to lOOjt Nitric Add (0 to flOjt) to 140? Phenol Phosphoric Acid (70-100g) to 250? Salt Watar Sodium Hydroxide to 425? Steen (Superheated) -Limita 1200F/2000PSI Steam to 125 P*ig Steam between 125 to 600 psig Sulfuric Add (75^ to fuming) 40 to 100F Katar - Pnish, Cooling Tower 4 Hydrogen cu.uumiui vjlu v.UMi'JUi I OF CALIFORNIA ENGINEERING DEPART* T - SAN FRANCISCO SPECIFICATION ( \ EG -2350-A FEBRUARY 2, 1971 SECTION A PAGE 6 OF 10 ' Packing Garlock 256 or 144 -- kubricant Rockwell 357 Garlock 256 John Crahe C-98 Rockwell 555 or 386 Rockwell 921 John Crane 704 John Crane 704 John Crane 704 John Crane 704 Garlock 256 John Crane 704 or C-98 John Crane 177-AI Garlock 145 Garlock 256 John Crane 704 Garlock 256 Raybaatos Manhattan 122S Rockwell 799 Rockwell 921 Rockwell 921 Rockwell 921 Rockwell 234 Rockwell 421, 147 or 921 Rockwell 234 Rockwell 921 Rockwell 921 Rockwell 234 Rockwell 555 Brief description of packing material! follow* John Crane 6AM ' - Braided eabertoa vith nonel vire insert] :Aabeatoa core vith dry graphite lubricant. Maximum tea$erature: 8507 CHEVB8 5643 'ohn Crane 177-A1 John Cran C-90 John Crane 704.'l Garlock 2j6 Oarlock 144 - Raybeatos Manhatten 122S STANDARD OIL COMPANY C5` CALIFORNIA ENGINEERING DE 1TMENT - SAN FRANCISCO SPECIFICATION NO. EG-2350-A FEBRUARY 2, 1971 SECTION A PAGE 7 OF 10 Closely braided aabestoa vith inconel wire insert, long fibre asbestos core vith flake graphite lubricant Max. temperature: 1200F 3 Ksx. pressure i 2000 P3I Braided asbestos yarn impregnated vith teflon Temperature: -100F to + 600F Pure Teflon braid, no lubricant vithin the packing. Temperature: -100F to 500F " 1 Long fibre asbestos yarn with copper wire Insert. Impregnated throughout with petroleum lubricant. Graphite coated surface. Q ' Maximum Temperature: 700 F Woven asbestos cloth wrapped over n rubber core. Cloth la impregnated with rubber (except outside surface) and a glycerol lubricant. Graphite coated surface. Max. tesserature: 600P Asbestos cloth wrapped over s rubber core. Cloth is lubricated, end surface costed vith flake graphite. Max. temperature: 600F NOTE: The above packing numbers are for Coiled Packing. Prefonned-Ring packing ia preferred when installed at factory. 4.2 Stuffing box shall have a bolted peaking flange and for valves requiring stem lubrication, a Lantern Ring shall be provided. Lantern Ring material must be compatible with the process fluid and ahall not cause scoring of valve stem. CHEV B8 5644 oavuuiaiui ui.Lt UUMTANX OT CALIFORNIA ENGINEERING DEPARTMENT - SAN FRANCISCO SPECIFICATION l , EG-2350-A FEBRUARY 2, 1971 SECTION A PAGE 8 OF 10 5.0 ACTUATORS 5.1 Actuators shall be designed to move the vslve over Its full stroke and be sized for the maximum pressure drop and line pressure shovn on the purchase specification sheet attached to the Agreement to vhich this Specification applies. 5.2 In the opening direction, a travel limit stop shall be engaged before the valve plug reaches its travel limit. The "stop" shall be designed to absorb any force transmitted to it. In the closing direction, the valve plug shall seal before the actuator reaches its travel limit. 5.3 Actuator characteristic shall be linear, at least over the working portion of its range. Actuator performance shall be as follows: (a) Stem position error shall not exceed +5$ of rated travel. (b) Hysteresis shall not exceed 5$ of rated travel. 5.4 Valve stem position shall be indicated on a graduated scale with the words "OPEN" and "CLOSED" at the stem travel limits. The indicating pointer shall be directly connected to the stem. 5.5 Spring and diaphragm actuators shall be of the enclosed spring type. Tbey shall preferably be direct acting and designed to stroke nomi nally 3 to 19 PSIG when in operation. Other ranges are only accept able by prior agreement with the Company. . 5.6 Actuators shall have a positive action on failure of the operating medium, unless otherwise specified. This may be obtained by use of springs or auxiliary volume tanka used in conjunction with relays. Mechanical "fail-safa" devices are not acceptable. 5.7 Actuator size shall not be leas than the manufacturers standard size for a given valve. 5.8 Handwheels, when specified, shall be of the side mounted type except for butterfly or ball valves which shall have shaft mounted handwheels. Handwheels shall preferably not require use of a clutch or gear shift and shall be continuously connected type capable of moving the valve in either direction. The neutral position of travel shall be clearly marked. Without exception, handwheel operation ahall be "clockwise rotation closes valve" and, "counterclockwise rotation opens valve." CHEVB8 5645 STANDARD OIL Cpw?ANY CP CALIFORNIA ENGINEERING DE> .(TMENT - SAN FRANCISCO SPECIFICATION NO, EG-2350-A' FEBRUARY 2, 1971 SECTION A PAGE 9 OF 10 6.0 ACCESSORIES 6.1 Pneumatic positioners, relays, transducers, etc. furnished vith"con trol valve shall be mounted and connected by the supplier using size 3/8 inch stainless steel or PVC coated copper tubing. Tubing fit tings are to be compression type, stainless steel for stainless steel tubing and brass for PVC coated copper tubing. 6.2 Pneumatic valve positioners shall have full by-pass assembly except for split range pneumatic positioners, or vhere spring/diaphragm range is other than 3*1? PSIG. Each positioner ahall be supplied complete with supply, input and output air gauges. 6,,3 Electro-pneumatic positioners, transducers, and valves provided with pneumatic relays or solenoid valves shall be provided with an output air gauge to measure diaphragm pressure. 6.U Each control valve shall be furnished with a permanently attached, corroaion resiatant nameplate bearing the following information: (a) Manufacturer'a name, model number and aerial number (b) Body and trim size (e) Body and trim materials (d) Trim type (e) Body and flange rating (f) Valve action on air failure (g) Bench setting and operating range (h) Tag number and Purchase Order number In addition, each valve shall have a tag indicating the packing material and lubricant. 7.0 INSPECTION AND TESTING 7.1 Valive body shall pass a hydrostatic pressure teat after assembly at the manufacturers works. Test pressure for steel bodies shall be according to ANSI Bl6.5. Test presaure for cast iron, brass or bronze bodies shall be two times the nominal body rating. CHEVB9 5646 .wu/4uw v/iij vumtahx QIT CALIFORNIA EtWWRERIWa DEPARTMENT - SAN FRANCISCO SPECIFICATION L , E0-235O-A FEBRUARY 2, 1971 SECTION A PAGE 10 OF 10 7.2 Where specified, castings that require radiograph testing shall Beet ASTM Standard No. E-71# Class 2 for castings up 2 inches in thickness or ASTM Standard No. E-186-67 for heavy valla 2 to V inches in thick ness. * 7,;j Where specified, castings that require dry povder magnetic particle inspection shall wet ASTM Standard E-109-03. 7.4 Where specified, castings that require dye penetrant inspection shall meet ASTM Standard E-165. ;- CHEVB8 5647