Spare Parts Mud Pump Model 12P160

2025-9-4 Inventory List
The 12P160 mud pump is a three-cylinder single-acting mud pump manufactured by National Oilwell Varco (NOV), mainly used in oil drilling and other fields. The detailed introduction is as follows:

Main Parameters

  • Rated Power: 1600 HP (1193 kW)
  • Rated Strokes per Minute: 120 spm
  • Stroke Length: 12 inches (304.8 mm)
  • Maximum Liner Bore Diameter: 7.25 inches (184.2 mm)
  • Hydraulic Cylinder Hydrostatic Test Pressure: 10,000 psi (703 kg/cm²)
  • Suction Connection: 10-inch ASA 150# RJ Flange
  • Discharge Connection: 6-inch API 5000# RJ Flange
  • Gear Ratio: 3.439
  • Total Weight (without sheave): 54,700 lbs (24,810 kg)

Structural Features

  • Power End: It adopts a steel plate welded structure to reduce weight. Two DC motors drive the transmission shaft through chain transmission, and then the small herringbone gear on the transmission shaft drives the large herringbone gear on the crankshaft. Finally, the crank-connecting rod-slider mechanism converts the rotational motion into the reciprocating motion of the crosshead and piston.
  • Fluid End: The valve box is arranged in an L-shape, composed of six forged boxes fixed on the cylinder block with long bolts. Similar valve boxes are interchangeable, facilitating installation and maintenance. The liner and cylinder block, the rod and connecting rod, and the connecting rod and piston are connected by clamp tightening. The piston has a one-way structure, and the liner and piston are lubricated by spray to reduce wear.

Performance Advantages

  • High Efficiency and Stability: The advanced fluid end design ensures extremely stable performance of the three cylinders, and the unique design allows for quick inspection and maintenance.
  • Strong Adaptability: The compact engineering design provides higher efficiency in a small space. It is light in weight and flexible in design, which can be easily adapted to various drilling rig configurations and adjusted according to changes in drilling requirements and conditions.
nov mud pump parts

nov mud pump parts

Item Type Description Part number
1 12P160 MP Suction Module 1292244
2 12P160 MP Discharge Module 1292241
3 12P160 Pulsation Dampener Element 100520807, Part number corresponding to the FD1600 spare parts, but the same model of dampener (DIAPHRAGM K-20) applies to this mud pump (12P160)
4 12P160 Relief Valve 3″ 7602-2914-78
5 12P160 ROD PISTON SUB 1292146
6 12P160 ROD PISTON 1292147
7 12P160 ROD INTERMEDIATE 1292083
8 12P160 COVER, VALVE POT 0-6316-0039-90
9 12P160 SEAL, VALVE POT COVER 0-6316-0092-00
10 12P160 DISC, BAFFLE 0-6316-0093-00
11 12P160 BUSHING, LOWER VALVE GUIDE 0-6316-0096-00
12 12P160 CLAMP, PISTON ROD 0-6316-0107-11
13 12P160 COVER, LINER END 0-6316-0164-00
14 12P160 GUIDE, LOWER VALVE W/ BUSHING 0-6316-0354-00
15 12P160 ROD, PISTON 1551703
16 12P160 EXTENSION, CROSSHEAD 0-6316-0028-00
17 12P160 BOLT, LOCK (VALVE GUIDE) 0-6316-0360-00
18 12P160 HEAD, CYLINDER 0-6316-0362-90
19 12P160 RING, ALIGNMENT 0-6316-0363-00
20 12P160 PLUG, CYLINDER HEAD 0-6316-0364-90
21 12P160 PLATE, WEAR 0-6316-0365-00
22 12P160 RING, LINER LOCK THREAD 0-6316-0366-00
23 12P160 LOCK, LINER 0-6316-0367-20
24 12P160 SEAL, CYLINDER HEAD 0-6316-0369-00
25 12P160 SEAL, LINER & WEAR PLATE 0-6316-0373-00
26 12P160 STRAINER 0-6397-0293-01
27 12P160 GUIDE, UPPER VALVE 0-6397-0575-00
28 12P160 RETAINER, UPPER VALVE GUIDE 0-6397-0603-00
29 12P160 SCREW, VALVE GUIDE RETAINER 0-7501-0051-00
30 12P160 ASSEMBLY, ½” HOSE 0-7503-0230-49
31 12P160 NIPPLE, PIPE 0-7601-2588-50
32 12P160 O-RING (DISC MANIFOLD) 0-7602-1600-25
33 12P160 O-RING (STRAINER CAP) 0-7602-1600-40
34 12P160 O-RING (LINER LOCK) 0-7602-1600-44
35 12P160 O-RING (SUCTION FLANGE) 0-7602-1600-52
36 12P160 O-RING (SUCTION MANIFOLD) 0-7602-1600-61
37 12P160 SEAL, R-39 RING JOINT 6908033
38 12P160 SEAL, R-44 RING JOINT 6908040
39 12P160 CHAIN TRANSMISSION There is no part number for this spare part, the specification of this drive chain is:                                                     Quintuplex Roller Chain | 166 links | Length: 6.31 m | Pitch: 38.10 mm | Roller Diameter: 22.20 mm | Inner Width: 25.40 mm.                                                                                      You need two (2) drive chains of 166 links, for each drive side of the mud pump
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