Onga Blazemaster B55BS Single Stage Fire Pump


Product Documents

Onga Blazemaster B55BS Single Stage Fire Pump – Briggs & Stratton Petrol Engine Drive

Onga has a vast range of fire fighting pumps to accommodate your requirements. Onga’s single stage Blazemaster pumps are designed to move more water, more economically and come available in a wide range of petrol (Honda and Briggs & Stratton), diesel (Yanmar and Kohler), recoil and electric start models.

Protecting your property against fire is a high priority within our rural and city edge community. The range of Onga BlazeMaster engine drive firefighting pumps has been designed specifically for this reason. And for portable water transfer, you can’t go past the Onga BlazeMaster. The Engine Drive range is available in a wide range of petrol, diesel, recoil and electric start models.Onga also offers engine driven versions of its dependable cast iron jet and centrifugal pumps. Coupled to shallow or deep well injectors, these pumps can be adapted to almost any job, and deliver water where and when you need it without the exorbitant cost of running electrical lines.


Brand Onga Pumps
Product Type Engine Drive
Suitable For Non aggressive liquids without solids or fibres in suspension
Stages Single stage
Application Fire Fighting
Tank Filling
Water Transfer
Irrigation & Spraying
Engine Brand Briggs & Stratton
Flow Rate (L/min) 640 L/min
Head 58m
kPa 580kPa
Fuel Petrol
Inlet 1½” BSP (M) / 40mm BSP (M)
Outlets 2 x 1″ BSP (M) + 1½” BSP (M)
Pump Dimensions 505L x 304W x 481H (mm)
Box Dimensions 620L x 465W x 550H (mm)
Weight 29kg
Nominal HP 5HP
Displacement 205cc
Fuel Tank Capacity 3 Litres
Fuel consumption @ 3600RPM 2.04 LT/hour
Recommended Oil Type SAE30
Pump Casing Power coated Aluminium
Impeller/s 30% Glass Filled Nylon
Diffuser Aluminium
Priming / Discharge Caps Glass Filled Nylon
Seal Flexible Cellows Nitrile
Seal Stationary Face Ceramic
Seal Rotating Face Carbon
Seal Spring Stainless Steel
Motor Shaft Mild Steel
O’Rings Nitrile


Fire fighting, tank filling, water transfer, boom spraying and irrigation.

  • The Blazemaster single-stage pumps are designed to move more water, more economically.
  • Briggs and Stratton Intek™ I/C race-bred series engine for reliability, durability and performance.
  • Manual and electric start options for versatility.
  • Fuel tap with sediment bowl and sight glass for greater ease when checking fuel and servicing.
  • Dual element air filter for cleaner operation.
  • Polyethylene fuel tank for impact / corrosion resistance.
  • ‘Run sense’ low oil protection to protect the engine from low oil failures and engine damage.


  • Big Pump Body with raised suction port
  • Larger diameter impellers
  • CFD* designed hydraulic components
  • FEA* designed pump components
  • Inbuilt non-return valve
  • Large diameter priming ports
  • Large raised handle
  • Cast Aluminium construction


  • Better Priming capability
  • Higher discharge head
  • Higher performance and efficiency
  • Higher strength with low weight
  • Assists priming performance
  • Quicker installation and service
  • Fast and easy priming set-up
  • Better ergonomics
  • Strength, durability and lightweight portability

Operating Conditions

  • Suitable for pumping clean non-aggressive liquids without solids or fibres in suspension.
  • Fluid:
    *Maximum water temperature: 55°C.
    *Minimum water temperature: 1°C.
    *Maximum ambient temperature:40°C.
    *Maximum casing pressure: 1300kPa.
  • For liquids outside of this range please consult your local Onga office for product suitability.
  • Viton seal kit available as replacement service part.
  • Engine performance greatly reduced with increased ambient temperature and/ or altitude, clarify with Engine Manufacturer



onga logo
Weight 30 kg
Dimensions 53 × 43 × 54 cm
With Roll Frame

30+kg – 55 x 45 x 45 cm

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