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the printed circuit board sends a signal to the gas valve
Valves are straight and come as a pair
Pack of 10 sheets
allowing for a more accurate finish
It is a switch with an in-built sensor that sits in the pipework for both the DHW and central heating systems
Crown Water Heater 2 Litre Expansion Vessel & Kit Cable Reel the printed circuit board sendsFeatures Expansion vessel with fixed membrane for domestic hot water systems Carbon steel body with white epoxy polyester paint finish and stainless steel flange Pre charged to 4. 1 bar Dimensions: Height 237mm x Diameter 125mm Max. system temperature: 99C Max. pressure of vessel: 10 bar Connection: 1 2" The use of an expansion vessel with a water heater of 15 litres or less is optional. However, there are some instances when it is recommended to