Flowserve MARK 3 GROUP 4 - Manual (Page 14)

MARK 3 GROUP 4 USER INSTRUCTIONS ENGLISH 71569286 08-12
Page 14 of 48 flowserve.com
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Torque (lbfx ft) = 5250 Shutoff Power (hp)
r/min
Torque required by the pump at any other speed
during start-up can be determined from the curve.
Note that the driver manufacturer usually bases 100
percent torque on the design power of the driver and
consequently the speed-torque curves should be
plotted in torque units (e.g. Nm) instead of
percentage torque to avoid confusion.
3.4.3 MAXIMUM WORKING PRESSURES -bar
(psi).
Above ambient temperature these maximum
pressures shall be derated.
Do not conduct a hydro test on the
namplete pump set without the specific approval of
Flowserve. While the duty requirement will have been
covered, auxiliary items, flange drillings and suction
pressure limits may impose a reduced static and
dynamic pressure rating compared to that of the
pump casting rating itself.
Note: all flanges are ANSI 125 (Cast Iron or Ductile
Iron-flat faced) or ANSI 150 (Stainless-raised face)
unless otherwise stated. All flange facings on the
casings are 250 rms – circular finish
CONSTRUCTION CAST IRON AND C.I.S.S. FITTED
STAINLESS STEEL
316,317L, WORTHITE, ETC.
TEMPERATURE
°C ( °F)
UP TO 12”
DISCHARGE
14 TO 16”
DISCHARGE
UP TO 16”
DISCHARGE
-30 to 38 (-20 to100) 10.3 (150) 10.3 (150) 13.8 (200)
65 (150) 10.3 (150) 9.7 (140) 13.8 (200)
95 (200) 10.3 (150) 9.3 (135) 13.4 (195)
120 (250) 10.3 (150) 9.0 (130) 12.6 (185)
150 (300)
Consult factory for applications in this range. Cast
iron not recommended due to thermal shock risks.
12.1 (175)
175 (350) 11.0 (160)