Caravan Tanks

It seems there are as many models of tanks available to builders of caravans, campers, RVs and motorhomes as there are actual caravans, campers, RVs and motorhomes!

Melbourne Rotomould manufactures a range of blank tanks that are fully configurable at our factory to suit your exact application, see below for details.

Melro also manufactures a range of bespoke, heavy duty tanks for a number of Caravan Manufacturers. If you are a Caravan/RV manufacturer looking for custom tank solutions contact us and we’d be happy to discuss.

Melro's caravan tanks are made from food grade poly plastic and they are potable water approved and manufactured locally in Victoria. Fittings and locations can be positioned exactly where you want them.

Melro caravan tanks are perfect for potable water storage and also for grey water collection. Black water can also be taken off site with these tanks. Installations typically require at least three fittings as follows:

Inlet for incoming water
Mains water connections require a pressure reducer to control incoming water flow into the tank.

Outlet for outgoing water
Outlets can be attached directly to a gravity feed tap, a manual pump or a powered automatic pressure pump to access the water in the tank.

Breather to prevent air lock
Position the end of your breather hose higher than the water inlet point to allow the whole system to breathe.

Hose for each fitting
Melbourne Rotomould tanks are manufactured with food grade plastic suitable for potable water storage. If your installation is for drinking water your hose connection will also need to be potable water approved.

Multiple tanks can be connected together. We recommend that you install them at the same height rather than stacking them. Multiple long tanks can be stood on end, restrained, and connected at their lowest point - doing this will automatically balance their levels. More tips are available on our connecting multiple tanks page.

Select your model by matching the dimensions to suit your application, then click on its fittings sheet to specify fittings and their locations. If you have any further technical queries please contact us on (03) 5940 4334 or email

Caravan Water Tank Range

54 Litre Caravan Tank

54 Litre Caravan Tank Capacity - 54 Litres Length - 800 mm Width - 280 mm Height - 280 mm


55 Litre Caravan Tank

55 Litre Caravan Tank Capacity - 55 Litres Length - 600 mm Width - 280 mm Height - 375 mm


80 Litre Caravan Tank

80 Litre Caravan Tank Capacity - 80 Litres Length - 900 mm Width - 400 mm Height - 250 mm


85 Litre Caravan Tank

85 Litre Caravan Tank Capacity - 85 Litres Length - 1280 mm Width - 320 mm Height - 225 mm


100 Litre Caravan Tank

100 Litre Caravan Tank Capacity - 100 Litres Length - 860 mm Width - 550 mm Height - 235 mm


110 Litre Caravan Tank

110 Litre Caravan Tank Capacity - 110 Litres Length - 1180 mm Width - 280 mm Height - 375 mm


160 Litre Caravan Tank

160 Litre Caravan Tank Capacity - 160 Litres Length - 1400 mm Width - 500 mm Height - 250 mm


220 Litre Caravan Tank

220 Litre Caravan Tank Capacity - 220 Litres Length - 1500 mm Width - 400 mm Height - 400 mm


240 Litre Four Wheel Drive Tank

240 Litre Caravan Tank Capacity - 240 Litres Length - 1700 mm Width - 400 mm Height - 380 mm