Open 7 days a week, 9am to 5pm Monday to Friday & 10am until 3pm weekends (Winter Hours and Bank Holidays vary) 

Summer offers - Get 10% off all Evolution Aqua products, use code GET10 at checkout.

High Pressure Switch

This high pressure switch is fitted on the output side of a booster pump and will turn off the power supply to the pump when the water back pressure increases as a result a blockage in the Reverse Osmosis system.

These parts are made to the highest specification, and are suitable for water filters, RO Reverse Osmosis water filters.

These connectors are designed for use in all cold water Reverse Osmosis applications and will last many, many years!


We aim to dispatch orders received before midday Monday to Friday on the same day where possible. In most cases our items are available for 1 to 2 day delivery at a competitive price and are trackable via DPD or APC.

Delivery costs for standard items in the UK - £5.95

(Surcharges do apply to remote postcodes)

Heavy items - £9.95

Pipe - £14.95

Palletised items - Some large oversize products, typically items weighing more than 30kg, may require delivery via pallet. Standard Pallet charge is approx. £50.00. To ensure there are no delays with delivery, please include a contact number when placing the order.

Overseas – DHL and UPS, cost based on weight / volume at checkout.