un-vented S-plan position of composite valves

9 Aug 2009
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United Kingdom
When installing composite valves i.e a combined expansion vessel, filling loop, pressure relief valve and pressure gauge, on an unvented S-plan. I wonderd were is the best place to put this. I no the expansion vessel and filling loop are best on the return. However the pressure relief valve is suppose to be on the flow close to the boiler. Anyone got any knoweledge on were to place these composite valves. Thanks for any help.
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Steve thinks you mean an un-vented cylinder :LOL:

It should be in the return as close to the boiler as practical.

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