JW-LOK’s high-pressure relief series comprises four product lines: relief valves, isolation relief needle valves, double-isolation relief needle valves, and double-isolation relief ball valves. Designed for pressure relief, shutoff, and isolation protection in high-pressure applications, these products are widely suited to oil, petrochemical, hydrogen energy, and high-pressure fluid testing scenarios. With a maximum operating pressure of up to 2068 bar (30,000 psig), the valve bodies are constructed from high-strength 316 stainless steel, offering excellent pressure resistance and corrosion protection to meet the stringent safety relief and shut-off requirements of demanding high-pressure fluid systems.

JW-LOK Product Specifications                                                                                                                                   

01 . Relief valve

Product Features

• Working pressure can reach 2068 bar (30,000 psig);

• The compact, integrated hexagonal design facilitates installation;

• Fluororubber O-ring operating temperature: -17.8°C to 204°C (0°F to 400°F);

• Outlet: 1/8" NPT female thread;

• Valve body material: High-strength 316 stainless steel;

• O-rings are easy to install and replace;

• Dual-screw locking design prevents the valve stem from loosening;

• The T-shaped handle is easy to operate.

Product Technical Specifications

Product Model

02 . Isolation bleed needle valve

Product Features

• Working pressure can reach 1379 bar (20,000 psig);

• Compact design, offering advantages over traditional multi-valve configurations;

• Requires minimal space for installation and operation;

• Fewer components required, resulting in cost savings;

• Reduce the likelihood of leaks;

• Metal-to-metal sealing provides ideal shutoff, excellent wear resistance and corrosion resistance, extending the service life of the valve stem and seat and increasing the number of repeatable opening and closing cycles;

• Non-rotating stem and integral body design;

• Features a reliable gland follower locking mechanism.

Product Technical Specifications

Product Model

03 . Double-isolated bleed-down needle valve

  Product Features

• Working pressure can reach 1379 bar (20,000 psig);

• Compact design with a small footprint, delivering excellent valve performance;

• Reduce the likelihood of leaks;

• Metal-to-metal sealing provides ideal shutoff, excellent wear resistance and corrosion resistance, extending the service life of the valve stem and seat and increasing the number of repeatable opening and closing cycles;

• Non-rotating stem and integral body design;

• Features a reliable gland follower locking mechanism.

Product Technical Specifications

Product Model

04 . Double-isolated bleed-off ball valve

Product Features

• Working pressure can reach 1034 bar (15,000 psig);

• The standard O-ring material is fluoroelastomer, with a working temperature range of -17.8°C to 204°C (0°F to 400°F); other O-ring materials are available upon request.

• Valve body material: High-strength 316 stainless steel;

• PEEK valve seats offer excellent chemical resistance, high-temperature resistance, and wear resistance;

• Trunnion-mounted ball: prevents the ball from being ejected;

• Fully open flow passages reduce pressure drop;

• V-type stem relief valve structure;

• A variety of interface types are available;

• A quarter-turn from open to closed provides quick shutoff.

Product Model

For more information and services regarding relief valves and isolation relief valves, please contact us.

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