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RPM Motors Ltd — Electric Motors Sales & Service

Household, rural and aquaculture pumps

Onga

Onga has been moving water around Australasian homes and farms for over sixty years — pressure systems, jet pumps and rainwater controllers built to be lived with rather than babied. We carry the range across household, Farm Master rural and aquaculture duty.

Household Pressure Pumps

Tank and mains pressure systems for the house — from the economical JM through to the variable speed Intellimaster that only draws the power the tap actually needs.

Onga Intellimaster variable speed pressure pumpOnga

Intellimaster

Variable speed pressure pump with an LCD display and constant pressure control. Uses markedly less power than a fixed speed pump and runs quieter with it.

  • 750 W – 2.2 kW
  • Variable speed
  • ECO SELECT rated
Onga Multi Evo self-priming multistage pumpOnga

Multi Evo

Self-priming horizontal multistage centrifugal pump with a high-efficiency hydraulic end and D.R.O.P. dry-run protection. Certified for drinking water.

  • 8 m suction lift
  • Multistage
  • AS/NZS 4020
Onga JS Series stainless steel jet pumpOnga

JS Series

Jet-assisted Homemaster with a stainless steel casing and base, so it survives sitting in the wet spot beside the tank. Loss-of-prime protection on JSP models.

  • 7.6 m suction lift
  • Stainless casing
  • Italian built
Onga JM Series household pressure pumpOnga

JM Series

The economical household pressure system. Moulded corrosion-resistant casing, high suction inlet for easy priming, and a quiet TEFC motor.

  • 7.6 m suction lift
  • Moulded casing
  • Thermal overload
Onga Dominator submersible pressure pumpOnga

Dominator

Sits down in the tank or well, so the house hears nothing. Stainless body and Signature 2000 internals, paired with a Presscontrol or WaterSwitch for a full pressure system.

  • 57 m max head
  • 94 lpm max flow
  • Silent in-tank
Onga Autojet automatic pressure pumpOnga

Autojet Series

A straightforward automatic pressure system for tank water, with a stainless casing and Press Control fitted. Good for garden and above or below ground tanks.

  • 450 W / 1100 W
  • 46 m max head
  • 77 lpm max flow

Farm Master Rural Pumps

The cast iron jet pumps that have been pulling water out of New Zealand bores, dams and creeks for decades. Injector combinations to suit shallow or deep well, offset or over-bore.

Onga Farm Master OJ800 cast iron jet pump with pressure tankOnga

OJ800 Range

The flagship Onga Jet, supplied complete with a pressure tank. Coated cast iron housing and precision internals — the one to fit when the bore is deep and the duty is daily.

  • 49 m deep well lift
  • Cast iron
  • Pressure tank included
Onga Farm Master OJ700 cast iron jet pumpOnga

OJ700 Range

Same cast iron Onga Jet build in a bare-pump format for existing tanks and manifolds. Offset injector combinations available.

  • 77 m max head
  • 162 lpm max flow
  • 40 m deep well lift
Onga Farm Master JJ600 junior jet pumpOnga

JJ600

Junior Jet — compact cast iron with the same injector flexibility as the OJ range, in a size that suits a house on a bore rather than a whole farm.

  • 63 m max head
  • 37 m deep well lift
  • Cast iron
Onga Farm Master JJ400 junior jet pumpOnga

JJ400

The smaller Junior Jet, for shallow wells, tanks and modest stock water duty where the JJ600 is more pump than the job needs.

  • 52 m max head
  • 98 lpm max flow
  • 27 m deep well lift
Onga Farm Master 500 Series thermoplastic jet pumpOnga

500 Series

Thermoplastic jet and venturi assisted centrifugal with a built-in check valve. Corrosion-proof where cast iron would not last, and light enough to carry.

  • 41 m max head
  • 118 lpm max flow
  • Corrosion-proof body

Rainwater & Boosting

The controls that turn a pump into a system — automatic mains changeover for rainwater harvesting, and dual-pump boosting where one pump cannot hold pressure.

Onga iWaterSwitch intelligent rainwater controllerOnga

iWaterSwitch

Intelligent rainwater controller that switches between stored rainwater and mains without anyone noticing. Displays live flow, pressure and current, and logs the rainwater you have used.

  • Automatic changeover
  • Live flow & pressure
  • Fits most Onga pumps
Onga Intellimaster dual booster pump setOnga

Intellimaster Dual Booster

Two variable speed Intellimasters on a stainless manifold with cascade control — the second pump only joins in when demand calls for it, and start-up alternates to even out the wear.

  • Twin variable speed
  • 304 stainless manifold
  • Cascade control
  • Rainwater to mains changeover
  • Constant pressure boosting
  • Dry run protection
  • Retrofits to most Onga pumps

Submersible & Drainage

Cast iron submersible pumps for pits, sumps and the low corner of the paddock that floods every winter. Vortex impellers so soft solids pass straight through instead of wrapping the shaft.

Onga VF150 cast iron submersible drainage pump with float switchOnga

VF150 / VF150N

Single phase drainage pump in a cast iron body, designed for clear or grey water carrying some soft solids. Float switch fitted, moisture sealed cable inlet, and a vortex impeller that passes 15 mm without complaint.

  • 350 W
  • 150 lpm · 7 m head
  • 15 mm soft solids
Onga CSM240VF cast iron submersible vortex pump with float switchOnga

CSM240 Vortex

Rugged cast iron dewatering pump with a dry motor design, dual mechanical seals in an oil chamber and automatic thermal and mechanical overload cut-out. Built for pits, water treatment circulation, grey water and commercial ponds.

  • 0.4 kW
  • 250 lpm · 10 m head
  • 10 mm free passage
  • Cast iron pump bodies
  • Vortex impellers
  • Float switch fitted
  • Soft solids handling

Pressure Tanks

A pressure tank is the cheapest way to make a pump last longer. It carries the small draw-offs so the pump is not starting every time someone runs a tap, and it takes the hammer out of the pipework.

Onga OPT steel diaphragm pressure tanks in a range of capacitiesOnga

OPT Pressure Tanks

Onga's OPT steel diaphragm tanks, sized for domestic and industrial pressurised water storage. Adding one cuts the start-stop frequency of the pump, which is what usually kills it — and it trims the power bill at the same time.

  • 8 – 100 L
  • Steel diaphragm
  • Potable water
  • 8 – 100 litre nominal capacities
  • Steel diaphragm construction
  • Suitable for potable water
  • Water hammer arresting

Aquaculture

Salt water duty is unforgiving. The SeaBass is built for it — sealed, coated and stood up off the corrosive puddle it would otherwise live in.

Onga SeaBass aquaculture pumpOnga

SeaBass

Purpose-built aquaculture pump with a salt water mechanical seal, stainless shaft and triple epoxy coated motor, rated for more than eight hours a day continuous.

  • Salt water seal
  • Triple epoxy coating
  • Continuous duty
  • Salt water mechanical seal
  • Triple epoxy coated motor
  • Continuously rated
  • Tall corrosion-resistant stand

Want one of these priced?

Tell us the model, or just the duty — flow, head and what you are pumping. We will confirm the right unit and what it takes to get it running.