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Discuss Instantaneous under sink heater monoblock tap in the Plumbing Forum | Plumbing Advice area at PlumbersForums.net

Matt0029

Gas Engineer
Messages
859
Does any one know why electric instantaneous under sink heaters are not permitted to me fit to monoblock taps? At least the Hyco ones say not to.
 

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer
Messages
30,341
Solutions
1
Back pressure from the cold
 

Matt0029

Gas Engineer
Messages
859
Wonder if a check valve on the hot feed to the tap could over come the problem?
 

ShaunCorbs

Staff member
S. Mod
Plumber
Gas Engineer
Messages
30,341
Solutions
1
Not really as I think the pressure would still rise a bit
 

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