Keep your warranty intact by buying genuine manufacturers spares only through McDonald Water Storage.
Please note that all prices on our online store include VAT and free shipping (for orders over £50) to a mainland UK address, unless otherwise stated. Any additional shipping costs will be shown at the checkout stage of your order process.
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Cold Water Tank Jacket
£42.12 Incl VAT Part No: WPUTJAdd to basket -
Cold Water Storage Tank for Indirect Systems
£385.65 Incl VAT Part No: WPUTIAdd to basket -
Cold Water Storage Tank for Direct Systems
£341.78 Incl VAT Part No: WPUTAdd to basket -
Negative Head 2.0Bar Twin Pump
£606.38 Incl VAT Part No: WPPNHAdd to basket -
Byelaw 30 Kit – CUBEflow
£33.08 Incl VAT Part No: WPB30CAdd to basket -
Byelaw 30 Kit
£33.08 Incl VAT Part No: WPB30Add to basket -
4.5″ Copper Float
£33.52 Incl VAT Part No: WPF4CAdd to basket -
4.5″ Plastic Float
£14.55 Incl VAT Part No: WPF4Add to basket -
15mm Ballvalve
£29.11 Incl VAT Part No: WP15BVJAdd to basket -
Grey High Limit Thermostat
£52.16 Incl VAT Part No: WNHLTAdd to basket -
30-90C Control Thermostat
£52.16 Incl VAT Part No: WNCTAdd to basket -
16″ 3kW Low Watts Density Immersion Heater
£93.71 Incl VAT Part No: WIHLWDAdd to basket -
9kW 16″ 415V 3 Phase Immersion Heater
£181.91 Incl VAT Part No: WIH9Add to basket -
6kW Immersion Heater + Stat
£181.91 Incl VAT Part No: WIH6Add to basket -
100mm Dial Temperature Gauge (0-120°C)
£36.38 Incl VAT Part No: WCTGAdd to basket -
100mm Dial Pressure Gauge (0-7B)
£35.83 Incl VAT Part No: WCPGAdd to basket -
1/2″ Vortex 155Z Blueone
£370.44 Incl VAT Part No: WCDPAdd to basket -
2-300 Litre Nitrogen Filled Expansion Vessel
£52.84 – £618.82 Incl VAT Part No: WU2EVSelect options -
15mm Pressure And Temperature Relief Valve (4.5Bar)
£57.27 Incl VAT Part No: WSUVTPAdd to basket -
High Temperature Header Tank
£302.37 – £325.22 Incl VAT Part No: CFE20Select options