Engineered & made in the UK since the 1960s  ·  Worldwide representative network  ·  Up to 95% water savings

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
Diaphragm Pumps

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

Sizes½” to 3″ inlet
Max. delivery50–840 l/min
BodiesAluminium, polypropylene, stainless steel
DiaphragmsNeoprene, 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

ModelDM12PTDM25PTDM25ANDM40ANDM50ANDM75AN
Fluid inlet½” NPT1″ NPT1″ BSPP1½” BSPP2″ NPT3″ BSPT
Fluid outlet½” NPT1″ NPT¾” NPT1¼” NPT2″ NPT3″ BSPT
Air inlet¼” NPT½” NPT¼” NPT½” NPT½” NPT¾” NPT
Max. delivery (l/min)50120114260600840
Net weight (kg)3.8129.415.827.453.2
ConstructionBoltedBoltedClampedClampedClampedBolted
Body materialPolypropylenePolypropyleneAluminiumAluminiumAluminiumAluminium
IMPA number (equivalent)59.16.1159.16.1259.16.0159.16.0259.16.0359.16.04

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.

Downloads

Downloads

Talk to an engineer

Tell us about your tank. We’ll recommend the right set-up.

Share your vessel size, access opening, residue and available pressure. Our engineers will come back with the right machine, nozzles and configuration for your application.

  • Machines configured to your pressure, flow and cycle time
  • Designed and built in Chandler’s Ford, Hampshire
  • Supported worldwide through our representative network

Send us an enquiry

The more you tell us, the more accurate our recommendation.

Speak to our engineers

Tell us about your tank, vessel or application and we will recommend the right set-up.