- Industry News
- Posted 2020-09-21
lovely-sex-porn,Test and adjustment of pneumatic butterfly valves
Whether manual, pneumatic, hydraulic or electric butterfly valves, all their parts have been strictly debugged before leaving the factory. When rechecking the sealing performance, users should evenly fix the inlet and outlet sides, close the butterfly valve, pressurize the inlet side, observe whether there is leakage at the outlet s...