Is it necessary to install a check valve at the outlet of a pneumatic diaphragm pump?
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Dear experts, is it necessary to install a check valve at the outlet of a pneumatic diaphragm pump? Why?
Don’t diaphragm pumps already come with check valves?
Both the inlet and outlet of the diaphragm pump are equipped with check valves, as this is required by the working principle of the pump. Check valves may fail, or even if they function properly, their reverse-sealing performance may not be sufficient; whether to install one depends on your process requirements
No, the inlet and outlet of the diaphragm pump are both equipped with check valves.
The power source is gas, and a check valve is installed at the pump outlet to prevent liquid from flowing back and damaging the impeller or motor
No, the diaphragm pumps used in our projects don’t have check valves. A check valve is only needed to be installed on centrifugal pumps.
It is generally not necessary, unless there is particularly high pressure downstream, as the pump itself comes equipped with a check valve
No, the inlet and outlet of the diaphragm pump are both equipped with check valves.
Diaphragm pumps belong to the category of positive displacement pumps; they have check valves built into the pump body at both the inlet and outlet, so there is no need to install a pipe check valve on the outlet pipeline
The ball seat of the diaphragm pump, together with the ball, serves as a check valve.
Why is it needed when stress is high? Is 1MPA high?