blow out preventer actuator ways: manual, hydraulic BOP blow out preventer actuator ways: manual, hydraulic end connection: flange, ... studden working pressure:2000~20000psi DN:90~346 The BOP has a single gate and dual gate in two forms ... , cylinder, cylinder head, piston, piston rod, lock shaft, sealing parts, ram, etc., and its working principle is: high-pressure oil into ...