WHAT SIZE WATER JETTER DO I NEED?
Generally speaking, the larger the pipe you are clearing, the more flow from the pump on your jetter is required.
If the majority of your work is 100-150mm, a flow rate between 21-25 lpm is ideal as you can use a small diameter 3/16” hose from a Mini Reel without overworking the pump. This smaller jetter hose will get around gullies, traps & multiple bends.
If a fair portion of your work is jetting lines 150mm & upwards, a larger flow rate of 31 lpm would be an advantage when using higher flow & larger diameter 3/8” jetting hose. To make best use of a larger flow pump & jetting hose, the penetrating nozzles & root cutting nozzles need to be jetted to suit the extra flow that the pump puts out.
The bigger 3/8” jetting hose is not suitable for 90-100mm pipes as it is too thick to take more than one bend. You can attach the 3/8” hose to a Mini Reel holding smaller diameter hose, but if you’re using a Mini Reel every time, a large flow pump wouldn’t be necessary as the full flow cannot fit through the smaller hose & the pump would be excessively by-passing.
The higher flow engine/pump groups are a physically larger unit than the smaller flow set-ups and will require a larger capacity header tank to keep the water supply up so will require more room on your vehicle. The higher flow engine/pump groups are ideally suited for trailer mounting.
It’s important to set yourself up for the type of drains you are going to be jetting 90% of the time, not 10% of the time. Some companies may suggest you require a certain type of jetter, not because it suits your needs, but because that’s the machine they sell.
The majority of city & suburban based plumbers will be mainly clearing 100mm drains & I believe our most popular jetter, the Racejet 4300 (4’300psi @ 21lpm) is the optimum machine for this type of work.
Always make sure the jetter you’re buying has an Australia wide dealer warranty on the engine, pump, gearbox & accessories. Don’t skimp on quality, buy the best or buy cheap & be prepared to buy twice.
If you buy solely on the cheapest price, you are the legal prey of the merchants who copy a product using inferior grade materials.