W-440 Well Service Pump is a continuous duty 6 stroke high performance triplex. This pump is an Ellis Williams style (EWS) design. The W-440HP is rated to 5000 PSI with 3-1/2 Piston/Liners with a maximum output of 5.3 BPM. Our W-446 is a
EWS446 Mud Pump TECHNICAL SPECIFICATION Rated input power 328KW (440HP) Rated Stroke 320 Stroke/Minute(320SPM) Stroke 152.4mm （6） Gear Ratio 4.578 ：1 Max. operation pressure 35Mpa Valve chamber Valve-Over API 4# Max. liner dia. 6 Max.
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