Valve Seats

To cooperate with our valve ball products, we developed valve seat products together with our associated suppliers to enrich our product range, also for furnish full package of supports to our customers. Guoyang Valve (GY Balls) can supply valve seat size range DN50~DN1200mm (2”~48”), including the metallic, resilient, metal-sealed, etc.

Beside of the single metallic or resilient type, the valve seats mostly ordered together with the valve balls, such as the PMSS (Primary Metal and Secondary Soft) seat and Metal-to-Metal seat are available to satisfy special working conditions.

For PMSS seats, we can furnish both the metallic seats and inserted resilient seats; for metal to metal seats, we can furnish the finished seats with surface treatment, such as HVOF/ HVAF tungsten carbide coating (TCC), chrome carbide coating (CCC), stellite, Nikel Alloy, etc., along with the processing of match grinding/ lapping service, all-in-one solution.

Guoyang Competitiveness

Workshop: 3,000㎡

Working Staff: 75

Capacity: 2000pcs/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: Valve Seats

Type: metallic, resilient, metal-sealed

Size Range: DN50~DN1200mm

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 ball valves;

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