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 📊

What’s 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

1. Prime the pump casing fully before first start.

2. Keep the suction lift as low and straight as possible; avoid air leaks on joints.

3. Fit a foot valve/strainer to protect the pump and maintain prime.

4. Do not run dry — use clean water and monitor flow.

5. 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