Can anyone tell what this grey cap is on a main 30kw boiler. Its on back righthand side of lower boiler. It is loose and leaking fluid but I do not know if it needs to be tight. Thanks
Cap is leaking water on main boiler
- Thread starter Chellvic
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Automatic air vent from the pump.
- Joined
- 5 Nov 2024
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- 6,163
- Reaction score
- 2,937
- Country
It should be open about 1/8th to expel air. I believe you can close it to stop the leak.
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