AIR OPERATED DIAPHRAGM PUMP - 1 1/2" DDP38 Macnaught

The DDP38 offers an economical and reliable pump for transfer of light to medium viscosity fluids. High flow rates can be achieved easily especially where low back-pressure applications exist. The ability to dry-run allows easy priming while operating without any damage to the pump. The Cast Aluminium body allows this pump to be used with a range of compatible chemicals as well as the new or used oils and engine coolants (RTU), diesel or oily water applications.

Technical Specfications


Maximum Air Pressure: 690kPa (100psi)
Inlet / Outlet Ports: 1.5" NPT(F)
Air Inlet Size/Type: 1/2" NPT(F)
Maximum Flow Rate: 265L/min (viscosity dependant)
Suction Lift: 4.6m (dry) / 7.6m (wet)
Maximum Solids Handling: 4.76mm (0.188")
Fluid temperature range: -12ºC - 82ºC
Maximum Noise level: 77 dB(A)
Fluid Compatability: Oils (new & used), Engine Coolants RTU (new & used), oily water, Diesel
Wetted Components: Cast Aluminium (body), Buna N (valve seats, diaphragms, check valves)

Features & Benefits

Up to 265 litre / minutes flow rate - Measured with water at the pump outlet
Fitted with band clamps on the inlet and outlet manifolds - Easy dismantling for repairs or clearing blockages
Cast Aluminium body - Wide range of chemical Compatibility for broader applications
Air-Operated pumps can be speed controlled - More control over a pump output
Fast fluid transfer for low to medium viscosity fluids - Inexpensive way to move large volumes of fluid
Easy self-priming - No damage to pump while running even with little or no fluid flow (for short periods)