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WATERAX offers a complete line of high performance portable centrifugal pumps.
Products / Fire Pumps / MARK-3® ESSENTIAL HIGH-PRESSURE FIRE PUMP / MARK-3® Essential Fire Pump with Integrated Fuel Tank

MARK-3® Essential Fire Pump with Integrated Fuel Tank

100169

MARK-3® Essential Fire Pump with Integrated Fuel Tank

100169

The MK3-EWS delivers the trusted high-pressure performance of the MARK-3® platform with the simplicity and durability of a fully mechanical system. Designed for crews who need a dependable, no-nonsense pump, it features an integrated 1 US gallon (3.8 L) fuel tank that delivers 45 minutes of uninterrupted runtime at full throttle - 100% and 65 minutes at 75% throttle, ideal for rapid deployment, sustained operations, and field conditions where refueling interruptions are not an option.

Built for versatility, this pump excels as a primary, auxiliary, or industrial-use pump. Its compact format, rugged components, and tool-free operation make it an excellent fit for wildland crews, remote worksites, forestry operations, and emergency water movement tasks.

Only the essentials - designed around what truly matters.

Maximum pressure
380 PSI (26.2 BAR)
Maximum flow
100 US gals/min (379 L/min)
Maximum head
877’ (267 m)
80 US GPM (303 L/min) @ 100 PSI (6.9 BAR)
70 US GPM (265 L/min) @ 150 PSI (10.3 BAR)
40 US GPM (151 L/min) @ 250 PSI (17.2 BAR)
Model and type
WATERAX 140cc, 2-cycle, air-cooled, Nikasil cylinder
Maximum Power
10.7 HP (8 kW) @ 8000 RPM
Maximum Torque
7.6 lbf-ft (10 N-m) @ 7050 RPM
Starting System
Recoil starter with backup manual rope starter
Type
Detachable, 4-Stage, Centrifugal Pump
Intake
2” Male NPSH
Discharge
1-1/2” Male NPSH
Dry: 51.7 lbs (23.5 kg)
Wet: 58.1 lbs (26.4 kg)
Wrap-around (Standard)
Direct Drive
Thread Protector Suction
Suction: 2” NPSH (Standard)
Thread Protector Discharge
Discharge: ¼-Turn Forged w/ Cap (Standard)
Fuel Connector
SAE 45 (Standard) & Mercury
Flow Rate at Specified Pressure
Maximum pressure
380 PSI (26.2 BAR)
Maximum flow
100 US gals/min (379 L/min)
Maximum head
877’ (267 m)
Performance
80 US GPM (303 L/min) @ 100 PSI (6.9 BAR)
70 US GPM (265 L/min) @ 150 PSI (10.3 BAR)
40 US GPM (151 L/min) @ 250 PSI (17.2 BAR)
Engine
Model and type
WATERAX 140cc, 2-cycle, air-cooled, Nikasil cylinder
Maximum Power
10.7 HP (8 kW) @ 8000 RPM
Maximum Torque
7.6 lbf-ft (10 N-m) @ 7050 RPM
Starting System
Recoil starter with backup manual rope starter
Pump End
Type
Detachable, 4-Stage, Centrifugal Pump
Intake
2” Male NPSH
Discharge
1-1/2” Male NPSH
Weight
Dry: 51.7 lbs (23.5 kg)
Wet: 58.1 lbs (26.4 kg)
Frame
Wrap-around (Standard)
Drive Unit
Direct Drive
Other Specifications
Thread Protector Suction
Suction: 2” NPSH (Standard)
Thread Protector Discharge
Discharge: ¼-Turn Forged w/ Cap (Standard)
Fuel Connector
SAE 45 (Standard) & Mercury
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