• 400 horsepower and 7 inches of single intermittent pump piston / plunger action.
  • Pump speed up to 280 rpm.
  • Maximum discharge pressure up to 10,000 psi.
  • Single power frame made of high-strength steel.
  • Heavy duty, tapered roller crankshaft bearings.
  • Stainless steel connecting rods, removable from the crosshead.
  • Replaceable stainless steel intermediate rods.
  • Individual removable inserts.
  • Cast iron oil seals with iron screws.
  • Chain drive of the gearbox 4.667: 1.

NOV JWS-400-C Mud Pump
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NOV JWS-400-C Mud Pump Cylinder
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Drilling Pump Piston NOV JWS-400-C
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NOV JWS-400-C Mud Pump Valve
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NOV (NATIONAL) model JWS-400-C