No return valve on combi
- Thread starter turnpike
- Start date
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Doesnt matter when it was manufactured or fitted if it has the inbuilt charging link i.e. you use the white key either the large one or the later smaller one ALL have an inbuilt non-return valve
H
holty
actually taxes. can you find a boiler maunu that uses an internal filling loop without a check valve. theres one manufacturer that used an rpz arrangement instead. ill give you the task of finding out. 
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actually taxes. can you find a boiler maunu that uses an internal filling loop without a check valve. theres one manufacturer that used an rpz arrangement instead. ill give you the task of finding out.
i'll check back here in a couple of weeks then
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