HARD WATER MAINTENANCE
 In hard water areas it is more important than ever that TRVs are maintained to stop plastic degrading and valves failing.
Drayton TRVs are made with plastic, rather than metal components, to stop internal parts sticking in hard water areas, but it is important to remember that debris can still build up. Regular cleaning helps stop the plastic degrading and ultimately prevents the head from snapping off.
First drain down the system, then un-screw the TRV head, and use Drayton’s universal grey tool to remove the valve insert before cleaning below it.
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