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Surejust 2 Liter RV Accumulator Tank

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2 Liter Accumulator Tank for your RV

This small accumulator tank provides 2 liters of water for use, before the water pump turns on. The RV accumulator tank absorbs any sudden pressure changes with its integrated diaphragm. It should be installed on the pressured side of your pump, and it will dampen water pressure 'spikes', reduce pump cycling, help increase the pump's life, and save battery power.

The Surejust 2 liter RV accumulator tank is reliable and durable, thanks to its impeccable build quality and high-grade materials. It comes pre-assembled and pre-pressurized to 19 PSI, so installation is made simple and straightforward. The unit comes ready to connect to 15mm plastic plumbing, and can be mounted in any position.

The tank is preset at 19 PSI, which is enough for most systems. In general the required pressure setting for an expansion tank is 5 PSI above your pump pressure. If you do not know your pump pressure, set the expansion tank to 30 PSI.

Surejust accumulator tanks are supplied complete with a mounting bracket and plumbing fitting, ready to connect into your system.

Key Benefits of the Surejust 2 Liter:

  • 2L Capacity.

  • Built-in diaphragm that cushions pressure spikes.

  • Extends the lifespan of your water pump.

  • Reduces battery drain.

  • Minimizes noise from the pump.

  • Provides smoother water flow.

  • Gives more control over water temperature.

Technical Specifications


2L (0.5 gal)


300 x 130 x 150 mm (11.8 x 5.1 x 5.9 in)


2kg (4.4 lbs)

Max Pressure (PSI)

112 PSI

Initial Pressure (PSI)

19 PSI