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DELLMECO air operated diaphragm (AODD) pumps are suitable for a wide range of applications.

They have a high abrasive resistance and withstand aggressive chemicals including acids, oils, solvents, paints, sludges and even media containing solid particles such as found in waste water. These pumps can also be used for transferring powders.

All the pumps are self-priming and the capacities and pressure can be easily controlled.

This pump is a positive-displacement pump that transfers fluids by means of diaphragms movement operated by compressed air.
The casing in contact with the fluid is made of PE (polyethylene), PE conductive, PTFE (polytetrafluoroethylene), PTFE conductive.



1.Designed to succeed
– temperatures up to + 120°C
– pressure up to 14 bar
– lubrication-free operation
– low air consumption
– abrasion resistance (PE, PE conductive)

2. Flexible installation
– BSP as standard
– PN10, PN16, ANSI, NPT, JIS, RJT, split manifold configurations available
– connections may rotate 180°



3.Solid, compact and strong

– housing machined from solid PE, PTFE as well as conductive PE and PTFE
– withstands aggressive chemicals
– gentle pumping action
– viscous media transfer



4.Perfect diaphragm

– completely smooth liquid-side surface (no holes)
– no metal in contact with the media
– materials made match the application


110164                              110165                                  110163

.     SELF-PRIMING APPLICATION                             SUBMERGED OPERATION                                         POSITIVE SUCTION HEAD
           The suction lift range                                        Our pumps can operate                                           As a method for completely
.              is up to 8 meters.                                            under full submersion.                                              emptying holding tanks,
.         This will vary according                          The construction materials must be                               clarifiers or similar containers.
.        to construction materials                          suitable for the surrounding liquid                           Optimum inlet pressure should be
.     and application parameters.                                and the outlet must be                                                    kept at 0.2-0.3 bar.
.            All data are based                                    positioned above the liquid level.
.     upon pumping water at 20°C




To reduce piping and pump connections stresses, we recommend flexible connections on both the inlet and outlet pipes and air inlet connections.

For best results DELLMECO recommends installing the pulsation dampener on the discharge side of the pump.


                      With pulsation dampeners                                                       Without pulsation dampeners
110992          110991

Alternative pump applications in plastic PE / PTFE – plastic. (ATEX)
Pump PE / PTFE (ATEX) with integrated pulsation damper in plastic.
More detailed installation information is available upon request by our DELLMECO Technical Team


Standard BSP


This is a standard connection for all plastic and metal pumps.

S – split connections


All pump models can be fitted with split connections (code S).
The pump can be converted from a standard double-action air-driven diaphragm pump into a unit with two single chambers. The suction and discharge connection are replaced by a split sleeve with a separate suction and discharge for both chambers. Both chambers are independent and by having them with the same drive it means there can be two media streams in a 1:1 ratio.

Flange connections PN10


This options offers the possibility to use flange connectors according to DIN/PN 10.
The inlet/outlet flange connections are by thread bushings made of stainless steel. The attached O-rings have to be inserted into the grooves of the manifolds to improve sealing before connecting the pump.
F1 – Flange connection PN 10 EPDM
F2 – Flange connection PN 10 NBR
F3 – Flange connection PN 10 FEP/FPM

Other types of flange connections


F4 – JIS B2220
F7 – PN10 DIN 2576
F8 – ANSI 150 RF SO
F9 – PN 10/16 DIN 2277/2278
Other connections on request

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