Valve Ball & Seat

Valve Ball & Seat
Ball seat assemblies in underground pumps are likely to be subjected to more severe workloads on a continuous basis than any other component in the pump. No pump part is more important than this, and even slight wear on the balls or valve seats can cause an immediate drop in pump efficiency.

Sanjack pump quality begins with the careful selection of materials for each grade of ball and seat to meet the intended service conditions. Before packaging, each ball-and-seat combination is vacuum tested to ensure a perfect seal is obtained in all positions of contact. Sanjack ball-and-seat valves are made to meet or exceed the API 11AX Specification.


According to different needs, Sanjack provides users with high-carbon and high-chromium stainless steel and carbide valve pairs, with high-quality substrates and precision machining. Factory products are 100% physical test and sealing performance test according to API11AX and GB/T 18607 standards.
Carbide valve pair: Made of high-quality tungsten-cobalt and tungsten-cobalt-titanium alloys, the hardness can reach 88HRA~90.5HRA, wear-resistant, corrosion-resistant, liquid-resistant, and stable in harsh working conditions.

Valve Balls Date

API No. V12-106 V12-125 V12-150 V12-175 V12-200 V12-225 V12-250 V12-375
Diameter 0.625 0.750 0.938 1.125 1.250 1.375 1.688 2.250
Material Stainless Steel, Cobalt Alloy, Titanium Carbide, Tungsten Carbide, Ceramic

Valve Seats Date

API No. V13-106 V13-125 V13-150 V13-175 V13-200 V13-225 V13-250 V13-375
H 0.500 0.500 0.500 0.500 0.500 0.500 0.500 0.750
OD 0.793 0.918 1.168 1.388 1.478 1.720 2.010 3.072
ID 0.460 0.550 0.670 0.825 0.960 1.060 1.310 1.790±0.090
Material Stainless Steel, Cobalt Alloy, Titanium Carbide, Tungsten Carbide, Ceramic

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