Specifications

API 7K LW440 Mud Pump
Single-acting Triplex Pump
Liner size 31/2"--4 1/2"

API 7K LW440  mud pump

LW440 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 28Mpa
Valve chamber Valve-Over API 4# 
Max. liner dia.4-1/2″
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

Tructure character

The pump is compact structure, small volume, lightweight, integrated herringbone gear pair, large transmit torque and smooth run. Crankshaft is welding forged and light weight without libration
    LW440 Mud Pump Single-acting Triplex Pump can be used widely in oilfield operation. Liner size from 31/4"-4 1/2" is better-adopted piston structure for workover operation and low well drilling operation while plunger structure for liner size from 2---31/4" for high- pressure operation.