Double check valves in outsidet taps.

Mar 20, 2023
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United Kingdom
The taps we have on our allotment (like this) seem to have two 'double check' valves in them. One in the tap snout and one in the hose connector screwed on the end. AM I right? I assume it's in case the hose part is removed for a plastic hose connector which may not have a non return feature. Thanks.

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