Whale WU7207 Pressure Switch, White : Amazon.co.uk: Business, Industry & Science
LONGRUN 12V DC Water Pump, Diaphragm Water Pump with Pressure Switch, 4.5L/Min 85 PSI High Pressure Self Priming Caravan Water Pump, Water Pressure Sprayer Pump for Caravan Camper Boat Lawn : Amazon.co.uk: