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Dewatering Pump, 11-22 cbm/hr@50m TMH
Dewatering Pump, 11-22 cbm/hr@50m TMH (Product Code: SLE/WDF/18) is an air-powered diaphragm dewatering unit used to keep hand-dug wells free of water while they are being dug and deepened. It delivers up to 22 m³/hr, or 11 m³/hr against a 50 m total manometric head, and it is self-priming, can run dry and handles water with relatively high solid content, which suits well-digging teams and WASH contractors. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Pump type | Air-powered diaphragm pump, self-priming |
| Application | Dewatering during hand-dug well construction |
| Capacity (as listed) | 11 to 22 m³/hr at 50 m total manometric head (TMH) |
| Maximum capacity | 22 m³/hr |
| Flow rate at 50 m TMH | 11 m³/hr |
| Pump operating pressure | 9.5 bar |
| Duty features | Can run dry; handles water with relatively high solid content |
| Air supply | Air compressor on a two-wheeled trolley, working pressure 7 bar, fitted with a pressure safety valve |
| Drive | Compressor directly flange-coupled to a diesel engine |
| Engine | Air-cooled, direct injection; rope or recoil starter; engine speed governor |
| Fuel tank | Sufficient for 12 hours of continuous normal operation |
| Engine accessories | Oil-bath air filter, soundproof muffler, re-borable liners |
| Product code | SLE/WDF/18 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is the Dewatering Pump Used For?
Digging a well by hand means working below the water table, where water keeps seeping into the shaft. The Dewatering Pump, 11-22 cbm/hr@50m TMH removes that inflow so the crew can keep excavating and lining the well. Its diaphragm design copes with muddy, sandy water that can quickly wear other pump types, and because it can run dry, it is not harmed when the shaft is pumped empty between inflows.
The pump is driven by compressed air rather than an electric motor. A diesel engine on the two-wheeled trolley drives the air compressor at the surface, so no mains power connection is needed at the well. Fill the fuel tank before a shift, since it holds enough for 12 hours of continuous normal operation, check the oil-bath air filter often in dusty conditions, and keep the compressor's pressure safety valve in working order.
What to Specify When Ordering
- The expected depth and head at your well sites, compared with the listed 11 m³/hr at 50 m TMH.
- The number of units required for the programme.
- Any accessories or spares you would like quoted — ask us what can be included.
- The delivery location and site access for a trolley-mounted unit.
Supplier
This pump is a sourced unit supplied by ScienceLab, the trading name of Jain Scientific Equipments Private Limited, Ambala, Haryana. Recognised by schools and colleges as a laboratory equipment supplier in India, the company also supplies pumps and fittings for water, sanitation and hygiene work and can quote the dewatering unit with the other items a well-construction programme needs. See the ScienceLab profile for more about the company.
Related Water, Sanitation & Hygiene Supplies
Pumps and hand pumps used before and after a well is completed:
- Pump Centrifugal, Diesel 50cbm/hr — a diesel-driven centrifugal pump listed for larger transfer duties.
- Pump Electric sbmr bh 18cbm/hr — an electric pump option for permanent supply once a water source is in service.
- Handpump Variant 3 Norm — a hand pump for fitting on a completed well.
- Handpump DA 9-15m Variant — a direct-action hand pump variant for shallower wells.
Browse the Water, Sanitation & Hygiene Supplies category for the full range.
Frequently Asked Questions
What flow does the Dewatering Pump, 11-22 cbm/hr@50m TMH deliver?
The Dewatering Pump, 11-22 cbm/hr@50m TMH has a listed maximum capacity of 22 m³ per hour and delivers 11 m³ per hour against a total manometric head of 50 m. Actual output on site depends on the head and conditions at each well.
What powers the dewatering pump?
The Dewatering Pump, 11-22 cbm/hr@50m TMH is an air-powered diaphragm pump. Its air comes from a compressor mounted on a two-wheeled trolley, working at 7 bar with a pressure safety valve and directly flange-coupled to an air-cooled, direct-injection diesel engine.
Can the pump handle muddy water or run dry?
Yes. The Dewatering Pump, 11-22 cbm/hr@50m TMH is self-priming, can run dry and can handle water with relatively high solid content, which suits the silty inflow that is common during hand-dug well excavation.
How long can the engine run on one tank of fuel?
The engine of the Dewatering Pump, 11-22 cbm/hr@50m TMH has a fuel tank sized for 12 hours of continuous normal operation. It also has an oil-bath air filter, a soundproof muffler, a speed governor and rope or recoil starting.
Who supplies the Dewatering Pump, 11-22 cbm/hr@50m TMH?
Jain Scientific Equipments Pvt Ltd, trading as ScienceLab in Ambala, Haryana, supplies the Dewatering Pump, 11-22 cbm/hr@50m TMH. The company sources the unit and quotes it for well-construction, WASH and institutional projects in India and international markets.
What should a quotation request for the pump include?
A quotation request for the Dewatering Pump, 11-22 cbm/hr@50m TMH should state the number of units, the delivery location and the expected well depth. Questions about spares, documentation or accessories can be raised on the contact page so we can confirm what is available.
Request a Quote
Send your requirement for the Dewatering Pump, 11-22 cbm/hr@50m TMH through the contact page, including the number of well sites and the delivery destination, or add the unit to the enquiry cart together with any hand pumps or fittings for the completed wells.
Last updated: 24 September 2026
