Structure of the diaphragm pump
(1) Outlet
(2) Outlet pipe
(3) Outlet check valve
(4) Air valve
(5) Air chamber
(6) Diaphragm
(7) Liquid chamber
(8) Diaphragm - connecting shaft
(9) Inlet ball valve
(10) Inlet pipe
(11) Inlet
Select a category
How our diaphragm pump works:
The overpressure created in the chamber (A) closes the suction valve and opens the pressure valve, allowing the liquid to enter the pressure line. At the same time, the same process takes place in reverse order in the negative pressure area of chamber (B). The pressure valve closes and the suction valve opens so that the liquid can flow in on the suction side.
Installation options for the compressed air double diaphragm pump
Self-priming
If the suction joint is above the liquid level, the pump must suck in the pumped liquid itself. When running dry, the diaphragm pumps can self-prime up to 4.5 m wc and when the suction line is full, a suction head of up to 9 m wc can be achieved.
Submerged operation
Pumps of sizes 1 1/2” and 2” can be submerged in liquids and operated there, provided the pump material is sufficiently resistant and the air outlet is above the liquid level.
Stationary or mobile installation
The pumps can either be mounted stationary or transported as required to different application sites to empty the liquids from different containers.
Flooded suction
If the liquid level is above the suction joint, this is referred to as positive feed. If the maximum inlet pressure is exceeded, the suction line should have appropriate shut-off valves
Hanging construction
For special process requirements, the pump can also be installed in a hanging position.
Our complete range of diaphragm pumps
Evora Pure double diaphragm air-operated pump
Evora Pure mini compressed air double diaphragm pump
Evora LDE 0250 (1/4") compressed air double diaphragm pump
Evora LDE 025M (1/4") compressed air double diaphragm pump
Evora LDE 050M (1/2") double diaphragm air-operated pump
Evora LDE 0500 (1/2") double diaphragm air-operated pump
Druckluft Doppelmembranpumpe Evora LDE 100M (1")
Evora LDE 1000 (1") double diaphragm air-operated pump
Evora LDE 1500 (1 1/2") double diaphragm air-operated pump
Evora LDE 2000 (2") double diaphragm air-operated pump
LDS Svolta 050M (1/2") double diaphragm air-operated pump
LDS Svolta 100M (1") compressed air double diaphragm pump
LDS Svolta 1500 (1 1/2") double diaphragm air-operated pump
LDS Svolta 2000 (2") compressed air double diaphragm pump
LDM Mova 3000 (3") double diaphragm air-operated pump
LDM Mova 4000 (4") double diaphragm air-operated pump
LDQ Quova 0500 (1/2") double diaphragm air-operated pump
LDQ Quova 1000 (1") double diaphragm air-operated pump
LDQ Quova 1500 (1 1/2") double diaphragm air-operated pump
Diaphragm pumps mixing system
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