For diaphragm pump,the reciprocating plunger deflects the diaphragm through volumetric displacement of hydraulic fluid to realize the suction and discharge of fluid by means of suction and discharge valves.Diaphragm totally separates the metered fluid from the environment and the hydraulic liquid. Diaphragm rupture signaling prevents the pumped and hydraulic fluids intermixing in case of diaphragm rupture.Under all operation conditions,the rupture of diaphragm is reliably signaled and the pump driver may be shutdown. The pump returns to normal after replacing the ruptured diaphragm.

Chongqing Pump Industry Co.,Ltd.is an enterprise authorizede by the state of developing and manufacturing the nuclear safety class 2 pumps.The top products among the nuclear safety class 2 pumps,the charging pump/the HP safety injection pump and the hydrotest pump which are developed by CQPI,mark CQPI's stepping toward catching up with and surpass the advanced world levels of pumps for nuclear power station,and creating the favourable condition for realizing the domestization of nuclear safety class 2 and class 3 pumps.