Pump Plungers

Sanjack manufactures plungers in an assortment of materials and finishes that offer superior wear properties for a wide variety of pumping conditions. Our plungers are made from cold-drawn, seamless-steel tubing, which is machined to size and spray-metal coated. The plungers are precision ground to the exact size as specified by the customer. All plungers are manufactured in strict compliance to meet or exceed current API 11AX and internal specifications.

Sanjack can provide users with various standard plungers such as internal thread plungers, external thread plungers, nickel-copper (nickel-copper) alloy joint external thread plungers, etc., and can also customize plungers with special specifications; the nominal diameter of the plunger is 106-475 (26.99~120.7mm); the plunger shell is made of high-quality carbon steel, and the outer surface is spray-welded with nickel-based alloy. It has excellent wear and corrosion resistance and can be used in most production wells.

A full range of plunger sizes from 1-1/16 to 5-3/4 inches. Steel chromed plungers feature pin-end and box-end designs. Steel plungers with sprayed metal finish are available with regular pins and nickel alloy pins. Nickel alloy pins are friction welded for higher strength.
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1). Spray-metal, pin-end pump plungers;

Pump Bore(in.) Thread API Number OD Length
1-1/16 0.8750-14 P21-106 1.0625 2ft (0.61m) to 24ft(7.32m)in 1ft(0.305m) increments.
1-1/4 1.0000-14 P21-125 1.2500
1-1/2 1.2500-14 P21-150 1.5000
1-3/4 1.4704-14 P21-175 1.7500
2 1.5604-14 P21-200 2.000
2-1/4 1.8024-14 P21-225 2.2500
2-1/2 2.1095-11-1/2 P21-250 2.5000
2-3/4 2.1095-11-1/2 P21-275 2.7500
3-3/4 3.1715-11-1/2 P21-375 3.7500

2). Spray-metal, box-end pump plungers;

Pump Bore(in.) Thread API Number OD Length
1-3/4 1.5084-14 P23-175 1.7500 2ft (0.61m) to 24ft(7.32m)in 1ft(0.305m) increments.
2-1/4 1.9864-14 P23-225 2.2500
2-3/4 2.3755-11-1/2 P23-275 2.7500
3-3/4 3.3825-11-1/2 P23-375 3.7500

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