Auxiliary equipment
Diaphragm Pumps
Air-operated double diaphragm pumps from ½” to 3″, in aluminium, polypropylene or stainless steel.
- ½” to 3″
- Air operated
- Up to 840 l/min
- IMPA equivalents

Overview
Versatile, reliable fluid transfer
Dasic air-operated double diaphragm pumps are suitable for many applications, whether pumping aggressive or abrasive products, clean fluids or high-viscosity liquids. A simple design with few moving parts means easy installation and low maintenance.
Typical applications include tank cleaning systems, dewatering cargo holds, pumping out bilges and cofferdams, sewage and slops transfer from holding tanks, offshore drilling muds, general oil transfer and super stripping of cargo holds.
At a glance
| Sizes | ½” to 3″ inlet |
| Max. delivery | 50–840 l/min |
| Bodies | Aluminium, polypropylene, stainless steel |
| Diaphragms | Neoprene, Teflon, Buna |
Features
At a glance
- Pump requires no lubrication
- Low-velocity action means no shearing or foaming
- Safely handles fluids containing suspended solids
- No rotary components for consistent efficiency
- Automatic stop keeps energy use to a minimum
- Fully CE marked
Specification
| Model | DM12PT | DM25PT | DM25AN | DM40AN | DM50AN | DM75AN |
|---|---|---|---|---|---|---|
| Fluid inlet | ½” NPT | 1″ NPT | 1″ BSPP | 1½” BSPP | 2″ NPT | 3″ BSPT |
| Fluid outlet | ½” NPT | 1″ NPT | ¾” NPT | 1¼” NPT | 2″ NPT | 3″ BSPT |
| Air inlet | ¼” NPT | ½” NPT | ¼” NPT | ½” NPT | ½” NPT | ¾” NPT |
| Max. delivery (l/min) | 50 | 120 | 114 | 260 | 600 | 840 |
| Net weight (kg) | 3.8 | 12 | 9.4 | 15.8 | 27.4 | 53.2 |
| Construction | Bolted | Bolted | Clamped | Clamped | Clamped | Bolted |
| Body material | Polypropylene | Polypropylene | Aluminium | Aluminium | Aluminium | Aluminium |
| IMPA number (equivalent) | 59.16.11 | 59.16.12 | 59.16.01 | 59.16.02 | 59.16.03 | 59.16.04 |
Typical applications
- Tank cleaning systems
- Cargo hold dewatering
- Bilges and cofferdams
- Slops transfer
- Drilling muds
- Cargo hold stripping
Need a complete package?
We can supply pumps, hose, ducting and couplings together with your machines.
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