Qisheng Valve Co., Ltd.

Qisheng Valve Co., Ltd. is a Chinese manufacturer specialising in knife gate valves, slurry valves, wear-resistant valves, gate valves for hydrocyclones, butterfly valves, blind plate valves, V-port ball valves, O-type ball valves, fully welded ball valves, check valves, globe valves, ceramic valves, control valves, half ball valves and gate hoisting mechanisms, available with electric, pneumatic, hydraulic, electro-hydraulic and manual operation. The company produces around 90 series covering more than 2,800 specifications for automated control systems in paper making, chemical fibre, petrochemical, food, metallurgy, power, pharmaceutical and wastewater treatment industries.

Its friction-free area metal-sealed knife gate valves are tested beyond the American MSS-SP-81 leakage standard, and the company holds twenty national patents with recognition as a national key new product under the national torch programme. Products are manufactured to GB, API, AISI, JIS and DIN standards, and a dedicated quality assurance department controls more than ten process stages, from incoming inspection, process testing and final testing to physical and chemical analysis, non-destructive testing, heat treatment control, strength testing and sealing performance inspection.