HW-446 mud pump are 100% replaceable to EWS-446 mud pump of American brand.
HW-440/446 Pump can be widely used in all kinds of works in oil field. When the cylinder liner specification is 6¡±-3 1/2¡±, piston structure is recommended and it is suitable for Oil-Well Repair and shallow-well drilling, etc. When the cylinder liner specification is 3 1/4¡±-2¡±, axial piston structure is recommended and it is suitable for high-pressure work.

HW446 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. liner mud pressure(160 stroke/minute)16.9Mpa
Dia. of suction manifold, 6¡±(150#)
Flange Dia. of discharge manifold 3¡±(900#) Flange
Dia. pinion shaft 95.25 mm(3.75¡±)
Key 22.174x15.9mm
Dimension:(No included base): 2479X1219X1103 mm
Weight 4463 kg.