DIAPHRAGM PUMP DDP50 Macnaught

The DDP50 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. Fully repairable and spare parts are readily available. Not suitable for flammable liquids.

Technical Specfications


Maximum Air Pressure: 690kPa (100psi)
Inlet / Outlet Ports: 2" NPT(F)
Air Inlet Size/Type: 1/2" NPT(F)
Maximum Flow Rate: 598 L/min (viscosity dependant)
Suction Lift: 5.2m (dry) / 9.8m (wet)
Maximum Solids Handling: 6.4mm (0.25")
Fluid temperature range: -12ºC - 82ºC
Maximum Noise level: 96 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 598 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)