Forged steel check valve is designed to prevent reverse flow in high-pressure industrial pipeline systems. With excellent pressure resistance, reliable sealing performance, and durable construction, they are widely used in oil and gas, petrochemical, chemical processing, and power generation applications.
Size: NPS 1/2″ ~ NPS2″
Pressure: 150LB~2500LB
Connection:RF, RTJ, BW,SW
Standard: API602,ANSI B16.34
Construction Type: BB or WB,OS&Y, Replaceable Seat
Face to Face: ASME B16.10
End standard: ASME B1.20.1 ASME B16.5 ANSI B16.11
Temperature: -29°C ~ 550°C
Main material: A105, F316, F304, F11, F12
Medium: water, steam oil, nitric acid, acetic acid, etc
Applications: Suitable for tap water, food, pharmaceutical, electric petroleum, liquefied gas, steam, and other media pipelin

Part | A105N | F22 | F304(L) | F316(L) |
Body | A105N | A182 F22 | A182 F304(L) | A182 F316(L) |
Disc | A276 420 | A276 F22 | A276 304(L) | A276 F316(L) |
Stem | A182 F6a | A182 | A182 F304(L) | A182 F316(L) |
Gasket | 316+Flexible graphite | 316+PTFE | ||
Bonnet | A105N | A182 F22 | A182/F304(L) | A182/F316(L) |
Xian Hengfeng Electromechanical Equipment Co.,Ltd
No.15,group 3,Sanlian Village,Dazhao Street Office,Chang’an District,Xi’an City, Shaanxi Province
Yiwu Hengfeng Electromechanical Equipment Company
Zongtang 1st District, Jiangdong Street, Yiwu City, Jinhua City, Zhejiang Province