•  With all kind of (pneumatic ) hydraulic safety valve
•  Quickly loading and unloading double tubing hanger design
•  A hole can also mining Two different strata, and can control and operation separately                • Compact structure, convenient operation, complete functions, sealing is reliable
•  It is supply for all kind of casing , tubing procedure
•  working pressure：2000PSI～20000PSI
• working medium : oil , nature gas , mud , consist of H2S CO2gas
•  working tem.：-46°C～121°C（LU ）
•  material ：AA、BB、CC、DD、EE、FF、HH
•  PSL：PSL1～4
•  PR：PR1～2