A20 Expansion Tank (eliminates pulsation, constant flow, absorbs water hammer, 0.3kg, for all pumps)

• Eliminates pulsation – stops the on/off “surging” you feel at the tap.

• Constant, even flow – smoother showers and quicker washing-up.

• Quieter system – reduces pump chatter and pipe vibration.

• Protects your plumbing – cushions pressure spikes (water hammer).

• Extends pump life – fewer rapid cycles means less wear and lower power draw.

• Compact & lightweight – easy to place close to the pump in tight lockers.

• Works with all common 12V diaphragm pumps in campervans, motorhomes, caravans and boats (e.g., Fiamma, Shurflo, Whale).

• Installs in-line on the pressure side (outlet) of the pump.

• Suits standard flexible hose systems; adapters can be used for push-fit plumbing.

An internal air chamber sits behind a diaphragm. As the pump runs, the A20 stores a little pressure and then feeds it back, smoothing out flow, reducing cycling, and absorbing shocks when taps open/close.

• Product: Fiamma A20 Expansion Tank

• Function: Accumulator/expansion tank for 12V water systems

• Weight: 0.3 kg

• Mounting orientation: Any (upright recommended if space allows)

• Connections: For standard camper hose (use appropriate barbed or push-fit adapters to match your system)

• Fiamma A20 expansion tank

• Basic fitting guidance

• Fit as close as practical to the pump outlet (between pump and first tap/tee).

• Keep hose runs short and supported; avoid tight bends.

• Use suitable adapters and clamps for a leak-free connection.

• After installation, run water and check for leaks, then test flow at low and high openings.

• Periodically check clamps and hoses for tightness.

• If you notice new pulsation after a long period, inspect for trapped air or partially blocked strainers and clean as needed.