national triplex mud pump in stock

Triplex Pumps - Used National 55T-3SC, 3" stroke, 55 hp triplex pump, cast ductile iron fluid end with 2" plungers, 2 1/2" 150# suction, 2" 600# discharge, with 7.5" electric motor. 1175... More Info

Triplex Pumps - Rebuilt National J-150L aluminum bronze fluid end. 6" 150# FF suction, 3" 2000# RJ discharge. 4" plungers, delrin disc valves, 838 packing with bronze adapters. More Info

Triplex Pumps - USED NATIONAL JWS-165L, 165 HP, 5" STROKE TRIPLEX WELL SERVICE PUMP, WITH STEEL FLUID END AND 4.5" PISTONS FOR 413 GPM MAX, 1910 PSI MAX, 400 RPM MAX, 225HP JOHN DEERE D... More Info

You are viewing three (3) fully reconditioned National Oilwell 12P160 Triplex Mud Pumps for sale by Pickett Oilfield, LLC. These National 12-P-160 Mud Pumps are Rebuilt and Ready to go to work.

Some refurbishments include: Fully reconditioned mud pump assembly. Pinion shaft assembly complete with new SKF bearings and new seals. Pump internals painted with Oil Resistant 2 Part epoxy Jotun Tank guard. MPI inspection of all critical areas of pump frame. MPI of all load path components of Crankshaft and Pinion shaft assemblies, and all new Southwest Premium “L” Shape 6,000 psi Fluid End Modules. A full Data Pack with all dimensional control & MPI reports will be furnished.

Warranty on National 12-P-160 Triplex Mud Pumps: All new parts fitted come with a 12 month warranty or such as offered by the part manufacturer; The refurbished GE-752 traction motors come with an 18 month warranty.

Pickett Oilfield, LLC offers prospective buyers an extensive selection of quality new, used, and refurbished Oilfield Drilling Equipment at competitive prices, including Triplex Mud pumps.

NOV 12-P-160 Mud Pump is rated at 1600 input horsepower (1193 kw) at 120 strokes per minute, with a 12-inch (304.8 mm) stroke. Multiple liner sizes allow pressures and volumes to handle circulation requirements in deep drilling applications.

Flexibility: Compact engineering provides higher efficiency in less space. The NOV 12-P-160 Triplex Mud Pump light weight and flexible design make it easily adaptable to a variety of rig configurations. This provides flexibility as drilling requirements and conditions change.

Fluid End Modules: NOV offers a choice of fluid end modules and valve covers for every P Series pump model to select the fluid end module that exactly matches drilling requirements. All pump models can be equipped with either the standard or premium forged, two-piece interchangeable fluid modules

Used National JWS-340 triplex well service mud pump, 4" metal plungers x 5" stroke, steel fluid end, chain case, Plunger lubricator, Rated maximum input 340 HP at 450 RPM, Fluid end pressure tested to 15,000 PSI

Used National JWS-125 Triplex Mud Pump Package, steel fluid end, 3.5" metal plungers x 5" stroke, complete with chain case 4.5:1 ratio, on skid with Detroit 6-71 diesel engine, 5 speed Eaton manual transmission, fuel tank, controls, drive line, mud gauge, PSV, piping and reversing manifold, on heavy duty I-beam skid, 8"W x 20"L x 8"H

Browse through more than 1,500 duplex piston rods and 200 duplex pony rods in our inventory. EC Tool gives you a quote before your order, so you know what you’re getting for your money every time. While we primarily keep connecting rods for GA550 and GA750 models in stock, there are other options at your disposal as well. This includes custom connecting rods for most duplex and triplex mud pumps.

We now offer new crossheads and capsules for both EMSCO D-375 and DB-550 duplex pumps. You can also find slides and shoes for certain models. Available parts currently in our inventory include:

Positive displacements pumps are generally used on drilling rigs to pump high pressure and high volume of drilling fluids throughout a drilling system. There are several reasons why the positive displacement mud pumps are used on the rigs.

The duplex pumps (Figure 1) have two cylinders with double acting. It means that pistons move back and take in drilling mud through open intake valve and other sides of the same pistons, the pistons push mud out through the discharge valves.

When the piston rod is moved forward, one of intake valves is lift to allow fluid to come in and one of the discharge valve is pushed up therefore the drilling mud is pumped out of the pump (Figure 2).

On the other hand, when the piston rod is moved backward drilling fluid is still pumped. The other intake and discharge valve will be opened (Figure 3).

The triplex pumps have three cylinders with single acting. The pistons are moved back and pull in drilling mud through open intake valves. When the pistons are moved forward and the drilling fluid is pushed out through open discharge valves.

On the contrary when the piston rods are moved backward, the intake valve are opened allowing drilling fluid coming into the pump (Figure 6). This video below shows how a triplex mud pump works.

Because each pump has power rating limit as 1600 hp, this will limit capability of pump. It means that you cannot pump at high rate and high pressure over what the pump can do. Use of a small liner will increase discharge pressure however the flow rate is reduces. Conversely, if a bigger liner is used to deliver more flow rate, maximum pump pressure will decrease.

As you can see, you can have 7500 psi with 4.5” liner but the maximum flow rate is only 297 GPM. If the biggest size of liner (7.25”) is used, the pump pressure is only 3200 psi.

Finally, we hope that this article would give you more understanding about the general idea of drilling mud pumps. Please feel free to add more comments.