Conventionally, in order to achieve a double block and bleed system, engineers would install two standard isolation valves and a separate facility for bleeding the cavity in between. Space is usually at a premium in the refinery environment, and this approach – requiring an additional valve unit to be installed as well as a “T”-junction to allow the cavity to be bled – more than doubles the space required compared with a single valve system. This increase in size can often make the installation unfeasible, especially where multiple valves along the line are to be upgraded.
The double - ball valve is designed to replace the complex forms of multiple valves in the traditional pipeline. Reduce the leakage point in the system, quickly realize the discharge and close the function. The double blockage double saves the installation space, simplify the installer, reduce the pressure of the pipe system, reduce the cost in the maximum limit.
The double - ball valve has the advantages of simple structure, reliable sealing, sealing surface and spherical often in the closed state, the media can not easily be eroded, easy operation and maintenance, suitable for water, gas, oil, solvents, acids and natural gas general working media, but also applies to poor working conditions of media, such as oxygen, hydrogen peroxide, methane and ethylene, widely used in various industries. The valve body can be integrated and can be combined.
double cut, safe and reliable
Main Materials: carbon steel, alloy steel, stainless steel, etc.
Body material: WCB, CF8,CF8M,CF3,CF3M ,WC6,WC9,LCB, LCC, LC1,F316 etc.
Nominal diameter:4¨——24¨ 100——600mm
Pressure range:150LB--2500LB ,1.6MPa--32MP
End connection: RF, RTJ, BW, THR
Operation: Manual,Worm gear, Pneumatic,Electric
Standards:ASTM, ANSI,AWWA, JIS,BS, GOST, DIN etc.