After many years of close cooperation, the Belgian Clasal took over the piston pump section from Geho ZD from WEIR Minerals Netherlands BV. With this lies design, production and distribution of the original ZD pumps in the hands of Clasal.
The GEHO ZD series is a twin-cylinder quadruple-acting crankshaft-driven piston pump. The GEHO design is purpose build contractor proven and is extremely suitable for wellpoint dewatering by gravity or vacuum and for horizontal dewatering (drainage).
KEY FEATURES
- Constant water and air flow, independent of suction and discharge head
- Self-priming with a suction lift (vacuum) of 9.6 mwc without the aid of an separate power absorbing vacuum pump
- Permanent high efficiency minimizing energy consumption
- About twice as efficient as a conventional vacuum priming impeller pump
- Robust design for ease of transportation and handling
- Rapid and economical maintenance and low spare parts usage
- Economical and longer carefree service life reducing overall project costs
- Unprecedented high availability allowing continuous and unattended operation
- Accessibility for ease of inspection and maintenance which require no special skills
- Resistant to brackish water
- Permit universal application. Depending on soil conditions, up to 100 wellpoints and up to 300 metres of header pipe can be connected to a single pump
- Can run dry without causing damage to the pump
PUMP PERFORMANCE CURVE
| Pump specifications | ||
|---|---|---|
| Pump specifications Type | ZD 900 | ZD 600 |
| Pump specifications Design | with gear casing | with gear casing |
| Pump specifications Max Capacity | 95 m³/h | 65 m³/h |
| Pump specifications Max Discharge head | 20 mwc | 20 mwc |
| Pump specifications Max Suction head | 9.6 mwc | 9.6 mwc |
| Pump specifications Connecting parts | 4”/6" | 4"/6” |
| Pump specifications Weight (empty) | Ca. 900 kg | Ca. 900 kg |
| Pump specifications Electric motor | 5,5 kW | 5,5 kW |