double block and bleed ball valves

Flange X NPT double block and bleed  valves

DBB valve is also called DBB ball valve , its main functions : cavity excretion

in the body, the upstream and downstream seat at the seat should be cut off together,

to ensure the safety when discharging. Double block and bleed valves are situable for : aviation kerosene, crude oil, light oil,

natural gas, Liquefied petroleum gas, piping gas,  Chemical medium pipeline etc .

DBB valves are as the ideal device in cutting off medium. DBB valves, its whole double block and bleed manifold is responsible for

isolating primary in liquid and gas services. Designed for weight and saving space,

they can also be installed in a wide range of fields. Sizes and different combination of units to satisfy all request . DBB valve is a combination of three valves ,as a new kind of valve,

DBB valves have completely double balls to cut off medium, discharge pressure and loot ,

it is not only sealing reliable, and also saving the cost of manufacturing.