Truck Mounted Fire Fighting Pumps

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MERAJ Fire Fighting Pumps

MERAJ with its new GORNER® range, creates entirely new standards for firefighting centrifugal pumps. The fire pumps FP & FPNH SERIES are at the top of their category due to their sophisticated internal fluid dynamics research, lightweight, compact design, and great performance, able to function in any setting and climate, as well as being put through rigorous testing.

The GORNER® range of MERAJ pumps can be used wherever the highest efficiency in difficult working conditions is required.

Meraj Gorner truck mounted fire fighting pump

Features of FP & FPNH Series Pumps

The "FP & FPNH" pumps' specific dimensional analysis has made it possible to obtain pumps with reduced dimensions, making them practically adaptable to all classes of trucks, from airport crash tender vehicles to lightweight fire fighting vehicles.

The unique design that was used makes the pump's operations quick and simple: replacing the mechanical seal can be done quickly without the need to disassemble the pump from the vehicle.

The conformation of the hydraulic part of the pump allows you to deliver water at low pressure also from reels.

Whether installed in Mid-Ship pattern or at back of the vehicle, the pump's unique design makes mounting and positioning absolutely simple.

The simplicity and the quality of the materials used allows a reduced assistance and longer intervals of maintenance.

Due to the high degree of modularity, only one type of mechanical seal is required for both the medium pressure and combined medium/high pressure versions. This simplifies and speeds up the process of defining the sense of rotation for the "FP & FPNH" range of pumps, which can rotate both clockwise and counter clockwise.

The self-compensating mechanical seal was specially developed for the FP & FPNH series pumps and features an innovative compact design. Among the technical features, the load spring is in a protected position without contact with the working medium. The new single-spring concept used is sinusoidal and results in less residue contamination than multispring systems. In addition, they are placed in static parts to reduce the number of rotating masses, which are more important for balance. Load dynamics elements are integrated into the stationary part and can restore axial play and reduce vibration automatically. We also achieved a significant reduction in rotating mass and successfully integrated the dynamic part of the seal into the medium pressure impeller. The part of the mechanical seal incorporated in the impeller is made of special material that ensures higher hardness, allows for longer maintenance intervals, and extends the life of the item.

Drive Options

  • PTO Direct Driven - No Gear Box
  • PTO Gear Box with Multiple Drive Ratios
  • Quiet & Efficient Operations
Meraj pump drive options

Range of FP & FPNH Series Pumps

SINGLE STAGE NORMAL PRESSURE
Suction N.P. Stage H.P. Stage
Pump Model Material Suction Suction Height Output (lpm) Pressure (bar) Output (lpm) Pressure (bar)
FP-2000ALUBRO4"3m200010/17N/AN/A
FP-3000ALUBRO5"3m300010/17N/AN/A
FP-4000ALUBRO6"3m400010/17N/AN/A
FP-5000ALUBRO8"3m500010/17N/AN/A
FP-6000ALUBRO8"3m600010/17N/AN/A
SINGLE STAGE HIGH/NORMAL PRESSURE
FPNH-20.40ALUBRO4"3m200010/17250/40040/54.5
FPNH-30.40ALUBRO5"3m300010/17250/40040/54.5
FPNH-40.40ALUBRO6"3m400010/17250/40040/54.5
FPNH-50.40ALUBRO8"3m500010/17250/40040/54.5
FPNH-60.40ALUBRO8"3m600010/17250/40040/54.5

Normal Pressure FP Series Pumps

Type:

Centrifugal pump, single stage

Suitability:

Suitable for pumpers, fire hydrants, air crash tenders, portable pumps and trailer

Casing Options:

Bronze or Aluminum Alloy with anti-corrosion treatment

Impeller Option:

Impeller made of Bronze or Aluminum Alloy with anti-corrosion treatment

Ball Bearing Box:

Ball bearing box made of Cast Iron

Shaft:

Stainless Steel shaft supported by ball-bearings

Priming System:

Water ring / Piston priming system integrated in the water pump, made of Aluminum Alloy with anti-corrosion treatment

Special Features

  • Impeller's wear rings replaceable
  • Self-balanced mechanical seal
  • Flanged suction inlet on the pump body
  • Flanged delivery outlet on the pump body
  • Thermal relief valve
  • Pressure relief valve
  • Fully certified to EN 1028-1 and EN 1028-2
FP Series gearbox and ball bearing pump versions
Gearbox Version Ball Bearing Version

Foam Proportioners

  • Lateral displacement foam mixer
  • 3. N° model available "M-180", "M-240" and "M-320"
  • "Venturimetric" type suction
  • In-built "Round the pump"
  • "M-180" version - flow rate 180 lt/min
  • "M-240" version - flow rate 240 lt/min
  • "M-320" version - flow rate 320 lt/min
  • Measuring valve with mixing rate from 0 to 8%
  • Tank vehicle foam with screwed connection
  • External tank threaded foam suction connection
  • Gunmetal or Aluminum construction
  • Possibility to be applied on the left side or right side of the inlet pump connection
Meraj Logic Enhanced System touchscreen controller

ME+ - Logic Enhanced System (LES)

The Meraj Logic Enhanced System (LES) is a nextgeneration digital CAN-based platform engineered for modern firefighting vehicles. Built to handle the toughest emergency environments, LES combines rugged hardware, intelligent controls, and real-time diagnostics into a single unified interface. Its advanced architecture enables seamless integration of vehicle subsystems, pumping operations, foam management, and safety monitoring, giving firefighting crews complete operational confidence when every second counts.

Meraj Logic Enhanced System control panel

Adaptability for Specialized Scenarios

The LES uses a modular design, enabling easy integration across all types of firefighting vehicles - from aerials and pumpers to ARFFs - without major customization. This allows operators to rely on consistent controls, real-time monitoring, and advanced safety features regardless of the platform. By streamlining pump management, diagnostics, and vehicle interaction into one system, LES removes the need for multiple solutions. Fleet operators can standardize on LES, reducing training, simplifying maintenance, and boosting reliability, making it a dependable, future-ready choice for any firefighting fleet.

MAP Piston Primer

The MAP piston priming pump is a crucial component designed to ensure effective priming for various pumping systems. Its robust and efficient construction makes it suitable for demanding operational environments.

Operational Safety and Durability

Safety and durability are central to the design of the MAP piston priming pump. It features oil bath lubrication, which helps maintain optimal performance and reduces wear. The inlet and outlet valves are constructed from extremely resistant plastic materials, ensuring longevity and resistance to harsh operating conditions. Additionally, the double piston pump design further enhances reliability and operational safety.

Priming Performance

Engineered for high efficiency, the MAP pump delivers impressive priming performance. Its design ensures that the system is reliably primed, supporting smooth and trouble-free pump operation.

Reliability That Saves Lives

By combining flexibility, resilience, and advanced digital control, the LES allows firefighting teams to focus entirely on their mission - protecting lives and property - with the assurance that their vehicle's critical systems are under precise and dependable control.

Engagement Methods

The MAP piston priming pump can be engaged and disengaged in two distinct ways, depending on the pump series. For the FP and FPNH series, manual engagement is available, allowing users direct control over the process. Alternatively, automatic engagement is also possible, providing convenience and operational flexibility.

Mounting and Drive Mechanism

This pump is typically mounted either on the pedestal (also referred to as the lantern) or directly on the gearbox. The drive is achieved through a belt connected to the pump shaft, enabling reliable power transmission and consistent operation.

Actuation of Automatic Priming

For the FP/FPNH series, the MAP priming pump drive belt is tensioned by a spring and disengaged by a cylinder. Control of the priming pump depends on the pump pressure. When the priming pressure is reached, the pump is automatically disengage - the priming process is finished. In feeding and bilge mode, the priming pump is switched off.

  • The priming pump is located above the water pump drive and is engaged when required.
  • Very fail-safe due to design as double piston pump and use of wear-resistant materials
  • Dirt resistant
  • Can be engaged and disengaged manually (only for FP/FPNH series) or automatically
MAP priming pump actuation diagram

MERAJ Fire Pump Gearbox

All MERAJ firefighting pumps can be equipped with a gearbox. This optional gearbox permits the fire pumps to be applied directly to an internal combustion engine or electric motor in case of utilization like motor pump or in case of insufficient rpm number in exit from the vehicle's PTO.

The Main Technical Features:

  • Aluminium Alloy construction
  • Primary Steel shaft supported by ball-bearings

Various Ratio

  • 1 : 1.18
  • 1 : 1.66
  • 1 : 2
  • 1 : 2.43

Various Drive Flange

  • SAE 1410 (standard)
  • DIN120
  • DIN100

Gearbox Cooler

  • Cooling kit for gearbox
  • Stainless Steel internal exchanger
  • Stainless Steel supply pipes and fittings
Meraj fire pump gearbox options

FP Series Pumps NFPA 1901

In addition to our EN certified range pumps, Meraj also offers NFPA 1901 compliant fire pump range. The firefighting system requires such type of pump which should be sufficient enough to work in the changing situation and discharge the water at maximum discharge head possible with the maximum flow rate and should with stand in high temperature and works smoothly. MERAJ manufactured and engineered fire fighting extinguishing pumps are capable to work in challenging and drastically changing situations and the performance of the pumps is tested and tried throughout the years. FP series pumps are the single stage, centrifugal pumps with PTO technology to meet the high pressure flow rate which range from 325 to 1500 GPM needed for major high-pressure application. The FP series pumps are our highest selling pumps. It is available with 2 or 3 gears transmission and allows for the addition of a highpressure booster pump or CAFS.

Meraj FP Series NFPA 1901 pump

Need Help Selecting a GORNER® Fire Pump?

Our engineering specialists can help identify the right GORNER® FP or FPNH pump configuration based on required flow rate, normal or high pressure, vehicle integration, PTO drive arrangements, and mission requirements.

Request a Quote Talk to a Pump Specialist

After-Sales Support

Support Beyond Delivery

Keep your MERAJ pump supported throughout its service life.

MERAJ provides after-sales assistance for pump systems through its technical teams and service-partner network. Engineering records and product documentation help support maintenance, troubleshooting, replacement parts, and long-term pump operation.

Explore After-Sales Contact Support

Technical Support

Get technical assistance for pump operation, system troubleshooting, installation, and service requirements.

Service Network

Access support through MERAJ service teams and service partners when pump inspection, maintenance, or technical assistance is required.

Spare Parts Support

Get support for replacement pump components and compatible parts using available product and engineering records.

Maintenance Assistance

Receive service guidance to help maintain pump performance, system condition, and dependable operation throughout the product lifecycle.

Frequently Asked Questions

What are GORNER® firefighting pumps?

GORNER® firefighting pumps are MERAJ truck-mounted centrifugal fire pumps designed for firefighting vehicles and emergency pumping systems. The range includes FP normal-pressure pumps and FPNH normal/high-pressure pumps.

What is the difference between FP and FPNH Series pumps?

FP Series pumps are single-stage normal-pressure centrifugal pumps, while FPNH Series pumps provide combined normal and high-pressure operation. The FPNH range uses a double-stage configuration for applications requiring both pressure ranges. Review our FP & FPNH range table for side-by-side performance ratings.

What flow rates are available in the GORNER® range?

The published FP and FPNH models provide normal-pressure outputs from 2,000 to 6,000 L/min, depending on pump model (such as the FP-6000 used on our airport crash tenders). FPNH models also provide published high-pressure outputs of 250 or 400 L/min. See all model outputs in the Range Table.

Are GORNER® pumps certified for firefighting applications?

Yes. The GORNER® brochure identifies the range as certified to EN 1028-1 and EN 1028-2 and also lists an NFPA 1901-compliant firefighting pump range. You can also download the official brochure from the MERAJ Download Centre.

Where can GORNER® firefighting pumps be installed?

GORNER® pumps can be installed in mid-ship or rear-mounted configurations. Their compact design supports seamless integration across different vehicle classes, including lightweight firefighting vehicles, urban fire trucks, industrial fire pumpers, and airport crash tenders.

What drive options are available?

GORNER® FP and FPNH pumps support direct power take-off (PTO) drive without a gearbox or a PTO gearbox with multiple drive ratios. An optional gearbox can also support connection to an internal-combustion engine or electric motor where required. Discover more in our dedicated Drive Options and Gearbox sections.

Do GORNER® pumps include a priming system?

Yes. The FP and FPNH specifications list an integrated water-ring or MAP double-piston priming system constructed from aluminum alloy with anti-corrosion treatment. Detailed operation and diagram are available under Actuation of Automatic Priming.

What materials are used in GORNER® pumps?

Published configurations include bronze or aluminum-alloy casing and impeller options with anti-corrosion treatment, a stainless-steel shaft supported by ball bearings, and a cast-iron ball-bearing box. Compare material selections for each model in the Range Table.

Are GORNER® pumps designed for easier maintenance?

Yes. The pump design allows mechanical-seal replacement without removing the complete pump from the vehicle chassis. The range also includes replaceable impeller wear rings and a self-balanced mechanical seal. For maintenance service and replacement parts, connect with MERAJ After-Sales Support.

What firefighting applications can use GORNER® pumps?

GORNER® pumps are specified for applications including fire pumpers, fire hydrant systems, airport crash tenders, firefighting tankers, portable pumping systems, and trailer-mounted configurations. Explore our full line of fire fighting and rescue vehicles.

How do I select the correct GORNER® pump?

Select the pump according to the required flow rate, normal or high-pressure operation, vehicle configuration, suction size, drive arrangement, and firefighting application. Contact MERAJ for engineering assistance matching an FP or FPNH model to the required vehicle or project specification.

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MERAJ is Asia's leading OEM manufacturer of Special Application Vehicles, Firefighting Equipment, Industrial Pumps, and Customized Engineering Solutions, serving critical industries since 1976.

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