Fire Pump Diesel Engine

Name: Fire Pump Diesel Engine
Brand: Ayso Fire Protection

A fire pump diesel engine is a diesel engine that drives the fire pump independently of mains power and is rated only for stationary emergency (standby) fire pump service. The pump's power and speed requirements, altitude and ambient temperature are evaluated together when selecting a diesel fire pump engine.

Clarke UL/FM Approved Fire Pump Diesel Engines

Clarke Fire Protection Products sold its first diesel fire pump engine in 1964 and began producing its own UL-FM engines in 1980. Clarke base engines are manufactured by John Deere, Caterpillar, Deutz, Kohler and Doosan. The range includes more than 300 UL-FM and non-listed engine models, supported by more than 300 authorised service points worldwide.

Clarke engines are offered with FM-UL-cUL approved power ratings. For example, the C32H0 series is a 12-cylinder, 32.1-litre V-type engine delivering 750 – 1200 BHP in the 1470 – 2100 rpm range. All C32H0 models are EPA Tier 2 certified. John Deere-based series such as the JU4H and JU6R are available for smaller power requirements.

According to Clarke data sheets, engine power is derated for altitude and ambient temperature. The engines are designed only for emergency fire pump service, not continuous duty, and are tested in accordance with NFPA 25. Fire pump diesel engines can also be supplied under the Kirloskar brand.

Fire Pump Diesel Engine Technical Specifications

Specification	Value
Approval	FM-UL-cUL approved power ratings
Power Range (example series)	JU4H: 41 – 130 BHP; JU6R: 92 – 260 BHP; C32H0: 750 – 1200 BHP
C32H0 Engine Type	12 cylinders, V-type, 4-stroke, 32.1 L
C32H0 Aspiration	Twin turbo, raw water aftercooled (Twin TRWA)
C32H0 Weight / Dimensions	3265 kg / 2112 × 1672 × 1624 mm (L×H×W)
Emissions (C32H0)	EPA Tier 2
Altitude Derating	3% power reduction for every 305 m above 91.4 m
Temperature Derating	1% power reduction for every 5.6 °C above 25 °C

Technical values are based on manufacturer documents; confirm against the current data sheet before ordering.

Fire Pump Diesel Engine Applications

Diesel engine fire pump stations

Facilities where mains power is unreliable or a backup driver is required

Industrial facilities, warehouses and energy facilities

Packaged and container-type fire pump stations

Related Fire Pump Accessories

Other equipment considered together with the Fire Pump Diesel Engine in the fire pump room:

Frequently Asked Questions

What makes a fire pump diesel engine different?

UL and FM approved fire pump engines undergo performance and function tests and are subject to regular quality audits. These engines are rated only for emergency fire pump service.

What is the power range of the example series?

For the series in the table: JU4H 41 – 130 BHP, JU6R 92 – 260 BHP and C32H0 750 – 1200 BHP. The manufacturer's range includes more than 300 models.

Do altitude and temperature affect engine power?

Yes. A 3% power reduction applies for every 305 m above 91.4 m, and 1% for every 5.6 °C above 25 °C.

Are the engines suitable for continuous duty?

No. According to the manufacturer, the engines should only be used for stationary emergency fire pump service.

How are the engines tested?

The engines are tested in accordance with NFPA 25.

Which emission class are C32H0 engines?

All C32H0 models are EPA Tier 2 certified.