Waterax Inc

MK3 MARK-3® With Mercury Fuel Connector

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The backpack portable MARK-3® is the strongest available lightweight high-pressure fire pump and it has been the prefered pump of initial attack crews and forest agencies around the world since 1964. A truly outstanding and reliable performer, the MARK-3® fire pump is designed to withstand the rigors of fire fighting and it is at the core of most water delivery system in wildland operations.


Maximum Pressure: 380 PSI (26.2 bar)
Maximum Flow: 98 US gals/min (371 L/min)
Maximum Head: 878’ (268 m)

PERFORMANCE 78 GPM (295 lpm) @ 100 PSI (6.9 BAR)
65 GPM (246 lpm) @ 150 PSI (10.3 BAR)
38 GPM (144 lpm) @ 200 PSI (13.8 BAR)
ENGINE Model & Type: WATERAX 185cc, 2-cycle, air-cooled, Nikasil cylinder
Maximum Power: 10 hp (7.5 kW) @ 5,500 rpm
Maximum Torque: 8.9 lb-ft (12 Nm) @ 5000 RPM
Starting System: Recoil starter with backup manual rope starter
PUMP Type: Detachable 4-Stage Centrifugal Pump
Intake: 2” Male NPSH
Discharge: 1-1/2” Male NPSH
WEIGHT Weight: 58.3 lbs (26.4 kg) FRAME Backpackable Frame DRIVE UNIT Direct Drive