(1) Gate valve: It often used to cut off the flow.
(2) Ball valve: It used for flow regulation and throttling.
(3) Check valve: It only plays a single function of inhibiting or preventing the backflow of materials in the piping.
(4) Safety valve and pressure relief valve: used to relieve accidental overpressure to prevent equipment damage.
(5) Globe valve: often used to adjust the flow
