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trv4

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  1. fronty

    TRV4 alternatives

    Can someone recommend an alternative to the Drayton TRV4 radstat? I have about 10 in my house but over the past few years 2 of them have failed, on one the base of the head which contains the screw thread just cracked and disintegrated and could no longer be screwed onto the body, and I have...
    • fronty
    • Thread
    • america trv4 usa
    • Replies: 0
    • Forum: USA
  2. Kittyg

    Replace TRV4 valve on a gloworm system

    Hi guys, So sorry if this has been posted hundreds of times already! I need to change a broken TRV4 valve on an upstairs bathroom rad. Do I need to drain the whole system to do this on a Gloworm Ultimate boiler system? If so, is the pipe in the pic (above the boiler) the drain off...
    • Kittyg
    • Thread
    • america replace system trv4 usa valve
    • Replies: 10
    • Forum: USA
  3. J

    Drayton TRV4 problems

    Hi. Having problems with these rad valves. The chrome type fitted to acova column radiators in a renovation project. Ex-plumber here but been out the game for 15 years. Basically, they ‘work’ when heating starts from cold but then trv shuts off and never cuts back in. So for example - heating...
  4. K

    Broken Drayton TRV4 Radiator Valve

    A Drayton TRV4 radiator valve where the head part you turn to change the temp including the tubular pin has come away from the rest of the unit. It hasn't snapped, it looks like it's been pulled, we think it's just a case of re-assembling and putting back but the TRV4 may need replacing if its...
  5. D

    TRV4 Sensing heads breaking

    I have Drayton TRV4's and over the last few years quite a number of the sensing heads have started to break off. As far as I can tell the gland seal on the valve starts to weep, water gets into the plastic head and attacks the plastic which becomes brittle and cracks. They were fitted 18 years...
  6. S

    Drayton TRV4 radiator valve query

    Can anyone please advise? With a Drayton TVR4, is the setting range completely variable and does not have to be set on a number/click position? Thanks...
  7. D

    TRV4 - what is this?

    I know what the columns headed Kv and Kvs are all about, but what is the last column, headed "a (2k)"? On some leaflets it is labelled with a Greek alpha.
  8. M

    Drayton TRV4 question

    Hey guys, are the Drayton white/classic/chrome TRV4's all made from the same material? Is it just a style difference or are the chrome ones actually made from chrome and the white ones made from plastic etc? Im looking to buy 7 of them and the white ones are a few quid cheaper.
  9. B

    TRV4 fitting

    Can someone settle an argument for me about the fitting of the TRV4 radiator valves? that is can they be fitted to both the flow or return sides of the radiator without having any adverse effect on performance? Thanks in advance, theres beer resting on the reply :crazy:
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