Diesel Fire Pumps

Firewater’s diesel pumps are arguably the most advanced in the New Zealand market. Based on intelligent design and ten years of fine-tuning, these pumps are made to work and made to last. They are trusted by most of New Zealand’s large utility companies effectively making them the industry standard.

What makes Firewater diesel pumps so good?


All coupling and belt guards are manufactured from 1.6mm sheet steel and are mounted so that they can be removed with the minimum of tools and fuss.

Diesel Pump

Heat Exchanger and Engine Cooling

Water-cooled units are fitted with a closed-circuit heat exchanger. The cooling water is normally fed through the heat exchangers from the main pump discharge via a line strainer, control valve, flow indicator. Radiator cooling is also available.

In an emergency this route can be bypassed by opening the emergency cooling valve, and shunting water directly to the heat exchanger. The main cooling valve may then be closed and repairs carried out on the pipework without shutting down the unit - the flow indicator acting as a non return valve and preventing a back flow into the area being serviced.

Heat exchanger

Emergency Starter

The engine can be started at any time by:

  1. Pressure switch
  2. Manual start button on the panel
  3. Emergency hand-start lever.

The emergency start lever bypasses the control panel and directly engages the starter motor.

Emergency Starter

Control Cabinet

The control cabinet is floor mounted with one lockable front opening panels, so that it can be situated against a wall, or with its back to the pump unit, thus giving the maximum amount of scope in laying out the pump house.

Our GEL Fire Series Auto-Start monitors the condition of the fire pump and provides a history function that enables the operator to access information on historic running conditions.

Engine revs are displayed by a digital tachometer. Up to a maximum of ten pressure switches can be provided, with their individual isolate relays and isolated lights.

The cabinets are supported off the floor by galvanized steel supports and are connected to the pump units by a flexible conduit and a 16-pin aeronautical quality, mechanically restrained plug for the wiring, and two nylon pipes of different sizes - to avoid wrong connection - for the pressure gauges. The wiring and pressure gauge lead outs can be fed into the left hand or right hand side of the cabinet.

Control Cabinet

Fuel Tank

The fuel tanks are cylindrical in shape, and are constructed from stainless steel 5mm steel plate ends. A generous 228mm dia. inspection hatch, fuel gauge, sludge sump, fuel valve, drain valve and two 1" B.S.P. filler and vent sockets are provided. These tanks may be platform or wall mounted.

Fuel Tank


Through testing of all Fire Pumps are carried out prior to Fire Pumps being sent to site.

Flows up to 15000 L/min and pressures up to 3000 Kpa can be recorded.

Each pump set comes with a detailed test certificate and flow graph - Engine performance tests are also carried out ensuring that if any issues arise, these can be put right before delivery. We pride ourselves on the overall finish and reliability of our product.

Testing fire pumps


All units are built on a rugged, steel chassis which, with the exception of the very small air-cooled units which have a press-folded steel base.

All units except the very small or extra large are built to a pump suction centre height of approximately 500mm. Back pull-out type pumps are used with spacer couplings so that pumps can be serviced without disturbing engine or pump mountings.

Straight chassis