Diaphragm Pumps

Double Diaphragm Pumps are designed for use in applications requiring large volume transfer in a short time. Driven by compressed air, these can transfer contaminated media & are very useful for cleaning out pits with mixed liquids such as oil, water etc.

Handle a wide variety of fluids with solid content: as there are no close fitting or rotating parts
Self priming: pump is designed for high suction lift even at dry start up & also with heavier fluids
Ability to run dry: as there are no close fitting or sliding parts Portable / simple installation: Simply connect air supply line & liquid line; pump is ready to perform
Explosion proof: safe pumps since they are operated by compressed air
Pumping efficiency remains constant: no rotors, gears or pistons that wear over time, hence no decline in performance

All pump models are designed for use with an inlet air pressure of 20-100 PSI

Air inlet threaded 1/4″ NPT (F)

Pumps are available in a choice of 2 materials:
i) Aluminium body with a Hytrel* diaphragm. These can be used for all high temperature applications
ii) Polypropylene – body with
– Santoprene Diaphragm – for use with abrasives,acids, caustic etc.
– Teflon (PTFE) Diaphragm -for use with fluids such as solvents

Size 1/4″ 1/2″ 1/2″ 1/2″ 3/4″ 3/4″ 1″ 
Casing Polypropylene Aluminium Polypropylene Polypropylene Aluminium Polypropylene Aluminium 
Diaphragm PTFE Hytrel® PTFE Santoprene® Hytrel® Santoprene® Hytrel® 
Flow Rate 0-11 LPM 0-50 LPM 0-45 LPM 0-45 LPM 0-110 LPM 0-110 LPM 0-110 LPM 
Pump Inlet/ Outlet Npt (F) 1/4″ 1/2″ 1/2″ 1/2″ 3/4″ 3/4″ 1″ 
Air Exhaust Npt(F) 3/8″ 3/8″ 3/8″ 3/8″ 3/4″ 3/4″ 3/4″ 
Max Particle Size N/A 1mm N/A N/A 2.0 mm 2.0 mm 2.0 mm 
Suction Lift (Dry) 5-feet 5-feet 8-feet 8-feet 18-feet 18-feet 18-feet 
Max Air Consumption 250 LPM
(8.83 CFM ) 
450 LPM 
(15.9 CFM) 
350 LPM
 (12.4 CFM) 
350 LPM
 (12.4 CFM) 
1200 LPM 
(42.4 CFM) 
1200 LPM
(42.4 CFM) 
1200 LPM
 (42.4 CFM) 
Wetted Components Polypropylene, PTFE Aluminium, PA, Stainless steel, Hytrel® Polypropylene, PTFE Polypropylene, PTFE Aluminium, Stainless steel Hytrel® Polypropylene, Santoprene® Aluminium, Stainless steel, Hytrel® 
Valve Ball Material PTFE (Flat type) Hytrel® PTFE (Flat type) PTFE (Flat type) Hytrel® Santoprene® Hytrel® 
Air Motor Ryton® Aluminium Ryton® Ryton® Aluminium Glass-filled polypropylene Aluminium 
Maximum Liquid Temperature 60°C 80°C 60°C 60°C 80°C 60°C 80°C