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1. Working pressure: 2000PSI-15000PSI

2. Normial diameter :1 13/16″-7 1/16″

3. Temperature grade: K-V

4. Material grade: AA DD EE FF

5. Specification grade: PSL1-PSL3G

6. Performance grade: PR2

7. Applicable medium: Oil/Gas/Mud

8. The solid nozzle is screwed into the body, which makes the maintenance easy.

9. The shape of the disc holder has been designed to enhance the effect of the fluid thrust for an instant lift of the disc.

10. Blow down control is provided with adjustable nozzle ring only.

11. The adequate materials and clearance between disc holder and guide, spindle and adjusting screw assures disc to lift successfully.

12. The surface of both the disc and the nozzle seat are deposited with Stellate. Excellent flatness and surface finish of the seating surfaces by precision machining and lapping assure pressure relief valve to have high degree of seat tightness and long using life.

13. The bellows of balanced bellows pressure relief valves can not only avoid and effect of variable back pressure in the system, but also protect spring and other trim components from corrosive media.

14. The choice of materials is careful. The manufacture of the spring and the bellows has strict technological process. Each of them is tested and checked strictly.

Safety valve is applicable for critical situations protection of oil and gas well leakage, fire etc. Based on driving source difference, it is divided into two kinds --- hydraulic safety valve and pneumatic valve. Equipped with heat sensitive and explosion proof device. Comprised of two parts-- sub actuator and preparation valve, with easy to replace and repair standard interface. The product has the advantages of simple structure, quick action, and high reliability and so on.