Trunnion Ball

Guoyang Valve (GY Balls) designed and developed the trunnion valve ball five years ago, originally it’s for satisfying the multi and increasing requisition of our existing customers, at the meantime, it also can enrich our existing product range, now it makes us can support our customers in a higher and better level. Guoyang Valve (GY Balls) can process trunnion balls size range DN40~DN400mm (1.5”~16”).

From appearance, Guoyang Valve (GY Balls) trunnion ball has outer trunnion and inner trunnion two kinds of balls. The outer trunnion is that there are two projecting trunnions in upper and lower place of the ball, and the inner trunnion is that it has two trunnion groove/ slot in upper and lower place of the ball, to place the connecting trunnions/ stems/ bearing.

Guoyang Valve (GY Balls) trunnion valve balls are mainly assembled in high-performance trunnion designed ball valves, side and top entry, fully welded, cast & forged 2/ 3 pcs body with flanged or butt welding ends.

Guoyang Valve (GY Balls) invested a lot in the design, technique, cost control, quality control, result verification, to make sure we are competitive in quality, price and delivery among our competitors.

Guoyang Competitiveness

Workshop: 5000㎡

Working Staff: 80

Capacity: 1000pcs/day

Raw Material Supplier: Tsingshan Group (Global Fortune 500)

Forging Plant: associated

Blanks Technique: forged

Manufacturing: full CNC, automatic

Quality Control: 100% (raw material, machining, final)

Product Information

Product: Trunnion Valve Ball

Type: trunnion, L port, T port, V port, with bar/ stem, etc;

Size Range: DN40~DN300mm

Rating: unlimited

Design: solid

Technique: forged


Stainless Steel: A182 F304(L), F316(L), F6A; (most competitive)

Duplex Stainless Steel: A182 F51, F53, F55, F60;

Carbon Steel: A105(+ENP), A350 LF2(+ENP);

Special Steel: 17-4PH, Monel 400 & K500, Inconel 825 & 625, etc.

Coating: ENP, Hard Chrome, Stellite, Ni Alloy, TCC, CCC, etc. (outsourced)

Applied Products: all kind of trunnion designed ball valves;

Applied Industries: oil &gas, chemical & petrochemicals, waters, steam, HVAC, etc.