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TWO-STAGE POWER PLANT PUMPS
SERIES 3000 ond 2000
ROTH-Two-Stage Power Pumps serve a variety of appli cations found in steam power service such as feeding water to steam boilers in a range of 100 to 500 PSI as well as condensate return, autoclave, desuperheater, and vacuum condenser service.
Series 3000 and 2000 have excellent hot water hantiiT.g characteristics due to the large passages between stages, the special suction entrance modifications, and the inherent vapor handling characteristics of the exclusive ROTH tur bine impeller design.
Both aeries are ruggedly built with extra heavy duty, flexible coupled shafts guaranteed for 10 years against breakage (see ROTH Guarantee, page 12). End-play has been completely eliminated and pressure lubricated ball bearingB mainfai^ precision performance and assure long life under hardest usage.
Steam engineers understand the proper use and main tenance of packing far better than the harder-to-replace mechanical seal, To cater to this preference, ROTH Power Plant Pumps are designed to handle hot water at high pressures with ordinary packing. Pressure on the packing has been reduced by approximately 65% through the installation o! a throttle bushing between the impeller and stuffing box in each side. Packing maintenance is minimised and adjustment made simple and easy.
SERIES 3000 two-stage turbine power plant pumps con sist of ten models divided into two general frame sixes.
Balanced design is one of the several factors resulting in the better performance and long life of ROTH aeries 3000. In -these pumps, the two stages are arranged so that loads
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SELECTION TABU--SERIES 3000 -- 1750 BPM
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213,215-: 44-5/8 454/16 .184/16 4t 6* `6;^ Vi 254It 2560 49-9/1S 50-13/16 1*15/16 46 714 5-S/S- 114
52-5/16 19-11/16 4b 7Vt 5-5/fl 114
28611*--* 52-U/16 3-13/16 20-3/16 52 9 5-5/8 IV.
324U.3261T 55.7/15 564/16 21-3/16 52 9 5-5/8 IV.
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Sac Ois-"lisa t*8.
v 3521-3741 nk 714 1WVI 714 2--
37514791 s* 914 12-7/8 4 714 ,
-3756-3796 Pk 914 12-7/8 4
1 7.31 7J | 8J| 9.8 .
L*L a 861 781 1l\ 641 571 831 75 l 6S| 6l{ 1
230 1S7
222 195
. 175 368 to* 22.0
11511041 951 86
Uriel Rt. 3521-3741 3751-3791 37564796
CtK 214' Section 2* Otsdance
Mw 4* Suction 214' Discftvie
Cat 4' Section 3* Oisdurce
T<mutic Test Frrn. -- FSI
C.I. On. 500 600
500 600
500 600
Ha. Witts, Oil r Cw -- PSI
C.t.
400 500 400 175 225 400 1^ 225 400 500
SEE 7AGE TWELVE