Cold Water Pack (CWP) for medium-capacity stored water heaters -
includes Expansion Vessel, Pressure Reducing Valve (PRV) and Check Valve.

An expansion vessel is a safety device needed where a cold water pipe between heater and first draw-off point (tap) isn't long enough to accommodate the expansion of hot water, while the PRV is required where supply pressure is over 6 bar and needs reducing for compatibility with your water heater. A check valve prevents backflow and cross-contamination of hot and cold water.

Kit contents:
1 x 2L Portable Mini Expansion Vessel 1/2" M
1 x 1/2" F Pressure Reducing Valve (adjustable 1.5 to 6 bar)
1 x 15mm Check Valve