Valves for The Oil and Natural Gas Industry

Relia valves are used for the oil, natural gas, and petrochemical industries. We are one of the leading valve manufacturers in China for ball, gate, globe, and check valves.


Relia Valve Co., Ltd.

As an export-oriented valve manufacturer, Relia focus on manufacturing ball valve, gate valve, globe valve and check valve for overseas market.

All the valves are strictly designed and tested in according to international standard such as API, ANSI, ASTM and ASME standard. 100% of the valves are hydro tested to meet the standard and customer request before leaving the factory.

Main materials include carbon steel, stainless steel, low temperature carbon steel, duplex stainless steel, aluminum bronze, Hastelloy C, Monel, inconel 625, inconel 825, etc. Size: 1/2"~48", pressure rating: Class 150LB~2500LB, working temperature: -196℃~650℃. The products are used in such industries as petroleum, chemical industry, electric power, natural gas, coal chemical industry, aerospace, metallurgy, pulp & paper, etc.

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Technical Support

ball valve seat selection guide

Ball Valve Seat, Seal, Gasket Material Specifications

Seat, seal, and gasket material selection guide for ball valves, including application fluid, temperature range, and pressure range, etc....

API RP 591 Process Valve Qualification Procedure

API RP 591: Process Valve Qualification Procedure

API RP 591 provides recommendations for evaluation of a manufacturer’s valve construction and quality management system for the purpose of determining a manufacturer’s ca...

api 600 trim chart

API 600 Trim Number Chart

API 600 trim number chart for trim parts stem, back seat, disc/wedge, seat surface of gate, globe and check valves. API 600 valve trim for a range from trim no. 1 to 18....

valve body material and application

Valve Body Material and Applications

Valve material and application: casting valve material and forged valve material, including carbon steel, low temperature carbon steel, alloy steel, stainless steel, bron...