Bison WP20 2 Petrol-Driven Water Pump
Reliable 2 transfer pump delivering up to 420 l/min and 28 m head.
A tough, easy-to-use petrol pump for site de-watering, irrigation, tank transfer and emergency water movement. Built with a protective carry frame, low-oil shutdown, and a 3.6 L fuel tank for extended run time.
Key Features
2 inlet/outlet for fast water transfer
High performance: up to 420 l/min flow & 28 m head
3.6 L fuel tank fewer refills on the job
Low-oil protection safeguards the engine
Rugged carry frame portable and durable
Quick-start recoil easy to prime and operate
The Bison WP20 is a premium high-quality 4-stroke petrol engine driven pump set built for reliability and longevity.
Typical Applications
Construction & civil works site dewatering
Irrigation and farm watering
Water tank & IBC transfer
Emergency water pumping
General clean-water use around estates & facilities
Technical Specifications
| Item | Bison WP20 |
|---|---|
| Inlet/Outlet | 2 (50 mm) |
| Maximum Flow | 420 l/min (25.2 m³/h) |
| Maximum Head | 28 m |
| Fuel Tank | 3.6 L |
| Protection | Low-oil shutdown |
| Starting System | Recoil |
| Weight | 21kg |
Whats Included
Bison WP20 pump unit in frame
User manual
(hoses, strainers & outlet hose tail fittings incl. engine tool)
Recommended Accessories
2 layflat delivery hose
2 reinforced suction hose (with foot strainer)
2 camlock or BSP fittings
Complete hose kits available
Setup & operating tips
Prime the pump casing fully before first start.
Keep the suction lift as low and straight as possible; avoid air leaks on joints.
Fit a foot valve/strainer to protect the pump and maintain prime.
Do not run dry use clean water and monitor flow.
Check engine oil level; low-oil protection will stop the engine if needed.
Why Choose Henry Pumps
Next-day UK delivery available
Expert advice from pump specialists
Genuine spares & accessories in stock
Reliable after-sales support
Customer reviews
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Brand:Bison
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Condition:New
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Product Code:1202-0010
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Weight:21kg
Buy with confidence
At Henry Pumps, we support residential, commercial, and industrial customers, from homeowners and landlords to contractors and facilities teams. Based in Derbyshire, we help solve flooding, drainage, and water management challenges across the UK. Every pump we supply is chosen for proven reliability and performance, backed by expert, straightforward advice you can trust. Whether you’re maintaining a property, managing a building, or dealing with an urgent issue, we’ll help you find the right solution.
