The pressure switches tend to be fitted to the older standard efficiency boilers Pressure switches can relate to water, gas or air and are used to restrict or allow the flow of specific material dependent on the pressure variables they are designed to switch the boiler off if the pressure in the boiler falls below a pre-set pressure normally 0.5 bar or 0.25 bar of pressure. This prevents the boiler from running at low pressures which prevent damage to the boiler. A pressure transducer is an electronic device and monitors the pressure all of the time and turns the boiler off if the boiler falls below 0.5 bar or 0.25 bar but it also turns off the boiler if the pressure gets too high within the boiler and this is normally set at around 2.75 bar.

Glowworm Low Water Pressure Switch 0020061607

Part: 0020061607

Price: £41.35
Halstead 862023 Trio Air Pressure Switch

Part: 862023

Price: £64.85
Main Switch 228954

Part: 228954

Price: £5.71
Potterton Water Pressure Switch COM562034

Part: COM562034

Price: £76.66
Main Pressure Switch Bracket 212534

Part: 212534

Price: £3.96
Halstead 500631 Trio Air Pressure Switch

Part: 500631

Price: £52.13
Ravenheat 0005PRE03010/0 Low Water Pressure

Part: 0005PRE03010/0

Price: £22.95
Potterton Pressure Switch 910026

Part: 910026

Price: £35.52
Main Water Pressure Switch COM562034

Part: COM562034

Price: £76.66
Heatline D003200038 Pressure Switch

Part: D003200038

Price: £29.95
Main Low Water Pressure Switch 5114748

Part: 5114748

Price: £13.50
Main Switch 404S684

Part: 404S684

Price: £11.92
Vaillant 0020059717 Ecotec Pressure Sensor

Part: 0020059717

Price: £23.72
Main Selector Switch 5110970

Part: 5110970

Price: £27.80
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