Pneumatic safety valve

            • Used in oil and gas leakage location and fire emergency situations such security protection
            • According to the different drivers that divided into hydraulic and pneumatic valve
            • With thermal and high-pressure explosion-proof device
            • It is consist of actuator and safety valve , standard connection so as to replace and maintenance .
            • working pressure ：2000PSI～20000PSI                                                             
            • nominal bore ：1.13/16"～7.1/16"(46mm～180mm) 
            • working medium : oil , nature gas , mud , consist of H2S CO2gas 
            • working temp. ：-46°C～121°C（LU
            •material ：AA、BB、CC、DD、EE、FF、HH
            • PSL：PSL1～4 
            • PR：PR1～2