Relief valve

Product overview
AJL pressure relief valve with a soft-seal ball structure provides automatic overpressure protection and controlled pressure release for ball valves, gate valves and wellhead equipment in oil, gas and water-treatment installations. The valve opens when system pressure exceeds the set value, protecting equipment and personnel. Body, spring and seal materials are selected for corrosion and high-temperature resistance.

Main features

• Materials: Body in 316SS or 304SS (customizable); spring INCONEL X-750; seal PEEK.
• High-pressure relief: Soft-seal ball design; rated working pressure ≤ 10,000 PSI (≈68.9 MPa).
• Safety design: Safety lead wire for linkage to safety systems; relief pressure marked on valve body for easy identification and maintenance.
• Connection options: Standard NPT ports; non-standard customization supported to match various equipment.

Applications
Suitable for oil drilling platforms, wellhead trees, long-distance gas pipelines, oil and gas processing plants and industrial water treatment systems as a supporting safety relief device for core valves and wellhead equipment.

Technical specifications

• Interface sizes: 1/4-18NPT, 3/8-18NPT, 1/2-14NPT, 3/4-14NPT, 1-11.5NPT
• Product type: Pressure relief valve, soft-seal ball structure
• Body material: 316SS, 304SS (customizable)
• Operating medium: Petroleum, natural gas, water
• Spring material: INCONEL X-750
• Seal material: PEEK
• Operating pressure: ≤ 10,000 PSI (≈68.9 MPa)
• Place of origin: Suzhou, China
• Brand: AJL

Brand & origin
AJL. Manufactured in Suzhou, China with industrial machining and quality inspection processes to meet oil, gas and water-treatment safety requirements.

Keywords

• pressure relief valve
• soft-seal relief valve
• high-pressure relief valve
• wellhead relief valve
• AJL relief valve
• 316SS relief valve
• PEEK seal relief valve
• INCONEL spring relief valve