Fire Pumps

WATERAX offers a complete line of high performance portable centrifugal pumps.

BB-4® High-Pressure Fire Pump Diesel

The BB-4® diesel high-pressure fire pump pairs the proven WATERAX 4-stage high pressure pump end with a powerful Kubota D902 25 HP diesel engine. Compatible with type 4, type 5, type 6 brush trucks and listed on the USFS type 6 Fire Apparatus specifications, the diesel BB-4® pump is suited to operate in a variety of fire operations. This unit is optimal for direct attack, remote watering, sprinkler systems and is popular for slip-on units.

This unit is available in different configurations:

  • Horizontal and vertical drive orientations


  • Brush trucks
  • Attack line firefighting
  • Long hose lay for remote watering during firefighting operations
  • High-elevation firefighting in mountainous areas
  • High pressure provides accuracy in flow trajectory
  • In series pumping over long distances
  • Parallel pumping for higher volumes

Features and benefits

  • 4-stage pump end compatible with MARK-3® pump for in-field exchanges
  • Quick-release clamp for minimal equipment downtime
  • Sealed bearing to eliminate pump end greasing in the field
  • Belt drive system for reliable, low maintenance performance
  • Aluminum alloy pump components and anodized parts for lighter weight and greater resistance to corrosion
  • EPA certified
View BB-4-D902V
View BB-4-D902H