How to Specify a Fire Truck: Tank, Pump and Crew Cab

Specify the water tank, foam tank, pump duty and occupied seats as separate requirements. For a useful first comparison, the HOWO compact 4×2 water fire truck combines 4,000 L nominal water storage with a pump duty of 30 L/s at 1.0 MPa. The Dongfeng F5 4×2 water/foam truck has separate 6,000 L water and 2,000 L foam tanks, with 40 L/s at 1.0 MPa. Those are different packages, even before the seating and equipment layout are considered.

Start with the water and foam catalogue or pumper catalogue. Keep one vehicle link with each comparison, so a tank from one record does not accidentally become paired with another vehicle's pump or cab.

Read the tank and pump figures on the same basis

The second configuration carries 2,000 L more nominal water, or 50% more than the first. Its separate foam tank does not turn it into an 8,000 L water truck. Compare the complete flow-and-pressure duty; CB10/30 or CB10/40 model names do not replace it.

Pressure and test conditions belong beside the flow figure. For example, Rosenbauer's N10 pump specification pairs 1,000 L/min with 10 bar and a 3 m suction height. This illustrates the information needed to compare pump duties; the offered Chengli configuration needs its own installed-system data. Rosenbauer pump technical data.

A simple capacity calculation before requesting a proposal

For this purchasing illustration only, assume a constant water demand of 1,000 L/min, no replenishment and the full nominal tank volume available to the calculation. Dividing nominal litres by assumed litres per minute gives the following storage comparison.

At an assumed 2,000 L/min, the same 5,000 L gives 2.5 minutes rather than five. Increasing pump capacity does not increase the quantity carried. This is storage arithmetic, not a prediction of firefighting duration, a pump test or an operating instruction: usable volume, reserves, losses, replenishment and the required operating conditions have not been modelled.

Write water and foam-concentrate volumes separately. Where the meaning is established, 7 m³ is 7,000 L. Do not turn a payload or whole-vehicle mass into tank volume. The Dongfeng 7,000 L sprinkler configuration and CLH5170 water fire truck provide separate 7 m³ and 7.56 m³ tank comparisons; the 560 L difference does not establish which complete vehicle suits a particular route.

A filled first-enquiry example

The following is a hypothetical buying brief for a new proposal, not a Chengli customer order or a configuration already accepted by an engineer.

These entries make two common omissions visible. “Double cab” does not answer a requirement for six occupants. “1,000 L/min” without pressure and inlet conditions does not complete the pump requirement. Mark either reply as an open item instead of quietly assuming it meets the brief.

Compare tank, pump and crew as a complete package

Seating is its own design decision. The Magirus LF 10, for example, identifies its 1+8 crew arrangement separately from its 1,600 L tank. Rosenbauer MT Municipal also separates tank, pump and crew modules. These comparisons illustrate the information to request; they do not supply the seating or performance of a different manufacturer’s vehicle.

Keep the manufacturer of the complete special-purpose vehicle separate from the chassis brand. Chengli is the manufacturing and configuration party; Dongfeng, HOWO, Isuzu or another named make may describe the chassis. Identify the actual offered chassis model and assess it with the installed systems, carried agents, people and equipment included.

Include maintenance access in the layout review. Ask how the pump plumbing and electrical panels can be reached, and where equipment must be removed for service. FAMA's maintenance-specification guide addresses these access choices.

Use a short proposal review record

The record is an illustration of reviewing a proposal, not a factory test result. Keep the accepted drawing, inclusion list and later revisions together. When lifting or scene-support equipment is also needed, compare the HOWO rescue truck with crane as a separate equipment package; its lifting equipment does not supply an assumed tank or pump specification.

Send the filled brief and the chosen vehicle links through the contact page. Chengli Group accepts project customisation and OEM/ODM enquiries. Identify mandatory requirements, alternatives to price separately and the exact documents to return with the proposal. The final technical specification and commercial scope are agreed in the quotation.