PRODUCTSValve Products

Gate Valve

Gate Valve – Category Overview
Gate valves are a key product line serving the petrochemical, refining, power generation, and waterworks industries. We offer Rising Stem (OS&Y), Non-Rising Stem (NRS), Wedge, and Parallel Slide configurations, with primary materials in stainless steel and special alloys, complemented by carbon steel and ductile iron.

FAQ

Material Coverage

Stainless Series: CF8 / CF8M / 304 / 316L
Special Alloy Series: Hastelloy C276, Inconel 625/718, Monel 400, Titanium Gr.2, Nickel 200/201
Duplex Series: 2205 / 2507
Carbon Steel Series: WCB / LCC
Ductile Iron (for waterworks service)
Configurations: Rising Stem (OS&Y) / Non-Rising Stem (NRS) / Wedge / Parallel Slide / Soft Seal / Metal Seal
End Connections: Flanged / Butt Weld / Socket Weld
Design Standards: API 600, ASME B16.34, DIN, GOST, JIS

Standards & Certifications

Design: API 600 / ASME B16.34
Testing: API 598
Certificates: API 600, CE, EAC, ISO 9001
Applications: Refineries, petrochemical, power plant main steam, high-temperature high-pressure pipelines, waterworks, mining

Production Highlights

Fully in-house cast body and bonnet with spectrographic analysis per melt batch
Nitrided stem with surface hardness HV 800-1000 for wear resistance
Stellite hardfacing on sealing surfaces for high-temperature and galling resistance
Disc and seat lapped in pairs with sealing surface finish Ra ≤0.4μm