Inline High Pressure Check Valve – Up to 10000 PSI (690 bar)
Heavy-duty inline high pressure check valves with 1/4" to 2" size range rated up to 10000 PSI (690 bar). Available in swing check, piston check, and spring-loaded designs. Designed per API 602, ASME B16.34 and tested per API 598. Ideal for oil & gas, chemical, pump protection, and high-pressure instrumentation systems.
Product Overview
Inline high pressure check valves ensure unidirectional flow and prevent reverse flow in high-pressure systems. Available with screwed (NPT/BSPT), socket weld, or butt weld ends. Spring-loaded design for vertical or horizontal installation; swing type for low pressure drop applications. Temperature range: -20°C to +232°C.
Key Specifications
Technical Specifications
Material of Construction
Approximate Dimensions (Piston Check)
Dimensions are approximate. Swing check dimensions may vary. Contact us for exact dimensional drawings.
Pressure-Temperature Chart
Values are indicative per ASME B16.34. Actual ratings depend on specific materials and design. Consult factory for exact ratings.
Features & Advantages
Spring-Loaded Design
Suitable for vertical or horizontal installation. Spring-loaded piston ensures positive sealing at any orientation.
Swing Type Option
Swing check design offers lower pressure drop for applications where minimal restriction is critical.
Corrosion Resistance
Stainless steel spring and SS316 internals provide excellent corrosion resistance in demanding environments.
Tight Sealing
Integral Stellite seat with optional PTFE seal ring ensures bubble-tight sealing at rated pressure.
Multiple End Connections
Screwed (NPT/BSPT), socket weld, and butt weld ends for flexible installation options.
High Pressure Rating
Rated 10000 PSI (690 bar) for demanding high-pressure applications in oil & gas and process industries.
Applications
Oil & Gas
Chemical
Pump Protection
Compressor Protection
High Pressure Systems
Instrumentation
Frequently Asked Questions
What is an inline high pressure check valve?
An inline high pressure check valve is a unidirectional flow control valve designed for pressure ratings up to 10000 PSI (690 bar). It prevents reverse flow that could damage equipment or disrupt processes. Available in swing check, piston check, and spring-loaded designs.
What pressure ratings are available?
Standard rating is 10000 PSI (690 bar). Cracking pressure options include 0.5 bar (standard), 0.2 bar (low), and 1.0 bar (high). The actual working pressure at elevated temperatures is determined by ASME B16.34 pressure-temperature ratings.
What end connections are available?
Available with screwed ends (NPT or BSPT threads), socket weld ends, and butt weld ends. The compact inline design fits between pipe fittings without requiring flanges.
What materials are available?
Body: SS316/ASTM A182 F316, SS304, SS316L, WCB. Disc/Piston: SS316 with Stellite overlay. Spring: Inconel X750 or SS316. Seat: Integral Stellite or PTFE seal ring. Hinge/Pin: SS316.
What standards does this valve meet?
Designed per API 602 and ASME B16.34. Tested per API 598. These are industry-standard requirements for high-pressure forged steel valves in oil & gas and process industries.
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Need High Pressure Check Valves?
Available up to 10000 PSI. Multiple materials, end connections, and check types. EN 10204 3.1 MTCs.