FBV is recommended to adopt twin ball trunnion ball valve with double block and bleed function.
The double block and bleed
(DBB) ball valve designed and manufactured by FBV can fully meet the user's
demand for simultaneously cutting off the pressure from both ends of the valve.
During the delivery inspection, a special DBB supplementary test will be added
after all the conventional valve tests are completed, so as to ensure that the
valve purchased by the user can fully meet the user's functional requirements.