www.saVRee.com Diaphragm Pump Explained| pg. 5
Contain few parts and require little maintenance.
Good to know – the term ‘self-priming’ means that a pump has the ability to pump air.
3D Model Annotations
Non-return Valve
Non-return valves allow flow in only one direction. As the diaphragm moves, the
pressure created within the casing will either lift the ball off its seat and allow flow, or,
press the ball against its seat and stop flow. The effect the diaphragm has upon each
valve depends upon the orientation of the non-return valve (the upper non-return valve
operates in the reverse direction to the lower non-return valve).
Swing Check Non-return Valve
Suction
Fluid enters the pump through this connection. Diaphragm pumps are positive
displacement pumps; thus they can pump gas, liquid or vapour.
Discharge
Fluid is discharged from the pump through this connection.