Honda WMP20 Water Pump

The Honda WMP20 is a chemical resistant pump that pushes 833 litres per minute, debris up to 5mm, and a total head of 31m.
Designed to withstand abrasive chemicals, it’s the most versatile water pump we make.
Harsh, agricultural fertiliser or industrial waste – our Chemical pump doesn’t mind either. It can deal with debris too.

Deadly liquids
The ultimate pump for professionals shifting volatile chemicals.
Taking on the most demanding jobs, our specially designed Chemical pumps have been built to withstand material others just can’t handle. Sulfates, nitrates and chlorides are no problem – as well as pretty much any other corrosive compound. They’re ideal for commercial and agricultural use.

Impervious
Many salts and acids erode metal. That’s why our Chemical pump has parts made of thermoplastic.

Our Chemical pump’s housing, volute and impeller are made of reinforced thermoplastic – it gives top-notch chemical resistance. The seals are made of EPDM (ethylene propylene diene monomer), which is a specialist rubber material that’s resistant to a wide range of chemicals.

Shifting serious water
Our chemical pump can also handle water with solids up to 5mm in diameter – there's even a strainer to ensure nothing bigger gets through. It's capable of moving a large amount of it, too – up to 833 litres per minute.

Oil alert™
This is a useful function that prevents damage to your engine by automatically shutting the unit down if oil drops below a safe operating level.

OHV 4-stroke engine
Powerful and efficient with trusted reliability – it must be a Honda. You’ll get easy starting in all conditions, with automatic decompression to reduce the pull force required.

Chemical pump
Designed to withstand abrasive chemicals, it’s the toughest water pump we make. Suitable for pumping chemical products such as agricultural fertilizer or industrial chemicals.

Anti-vibration system
Vibration can contribute to wear and tear on your machine. We’ve added straight engine rubber mounts to reduce mechanical stress on the entire unit.

Pump
Maximum output capacity (L/min): 833
Inlet/outlet diameter thread type (mm/inches): 50/2-NPT
Total head (m): 32
Suction head (m): 8
Pressure (bars): 3.2
Debris size capacity (mm): 5

Engine
Engine Model: GX160
Engine type: 4-stroke, OHV,** 1 cylinder
Displacement (cm³): 163
Bore x stroke (mm): 68 x 45
Engine speed (rpm): 3600 max
Engine net power (kW): 3.6
Cooling system: Forced air
Ignition system: Transistor
Oil capacity (L): 0.6
Fuel tank capacity (L): 3.1
Operating time: 2h15 approx
Starter system: Recoil
Sound pressure level at workstation (dB(A)): 92
Guaranteed sound power level (dB(A)): 106

Dimensions
Length (mm): 520
Width (mm): 400
Height (mm): 450
Dry weight (kg): 26