This product combines screw drive structure and external pressure balance structure with inlet/outlet pressure balance structure, screw drive structure and pressure balance lever structure. The main function is to reduce pressure difference, reduce torque and effectively/safely cut of or unite transmission media. This type of valves are applied in high pressure oil/gas filed and fracturing wellhead. The main characteristics are inlet/outlet pressure
balance, screw drive, rear seal, double seats, balance stem, adjustable back seal.
Nominal diameter:4-1/16 ″~ 7-1/16 ″
Working pressure:10000~15000 PSI
