Our heavy duty positive displacement diaphragm pump is a true workhorse and designed for continuous duty and suitable for construction and industrial work. These pumps are ideal for the large or small contractor and are made expressly for pumping liquids with abrasive quantities in suspension. Typical applications include trench and worksite dewatering and for manure handling and septic tank cleaning. They will handle up to 30% solids and are positively self priming. With no gland to wear, these pumps have a snoring capability therefore these pumps can be run dry, which is most essential in excavation applications. Solidly constructed with a heavy duty aluminium alloy casing and inlet / outlets. Available complete with a variety of electric or petrol drive units that are easily maintained for a long service life. Also available without a power drive (Bareshaft).
Performance curves are based on a kinematic viscosity value of 1mm2/s and a density of 1000 Kg/m3 at 20ºC.
- Flow rates up to 75m³/h.
- Heads up to 9m.
- Suction heads up to 8m.
- Maximum fluid temperature: +35ºC.
- Maximum ambient temperature: +50ºC.
- Maximum allowable pressure in casing: 2 Bar.
- Pumping speed: Nominal speed 50rpm.
- Grease packed self aligning bearings.
- 3" stroke, adjustable height for long diaphragm life.
- Rugged welded all steel frame.
- Tapered bottom bowl for faster priming.
- Rubber pneumatic wheels for easy hand towing.
- Chain Drive for positive operation.
- Available with flap valve or ball valve options.
- The ball valve options should be used where there are significant amounts of suspended solids i.e. For septic tank cleaning etc.
Options available are with electric motors or petrol engines in the following sizes.
Honda petrol: 4hp engine with recoil or 5.5hp engine with electric start.
Electric motors: 1.5Kw in either single or three phase motors.
It is preferable for this pump is to be installed in a horizontal position. These self priming pumps require water in the pump case only for the initial pumping operation. No water is necessary for subsequent pumping when the casing contains water For maximum efficiency use 3" hose and keep the hose as short and straight as possible. Note for maximum life of the diaphragm rubber, a distance of 203mm should be maintained for the push rod i.e. between the top of plate item 10 and the bottom of eccentric bearing housing item 15.