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valves

  1. E

    How long do honeywell two port motorised valves last?

    Ours are lasting between a year and two years and then I have to replace. Is this normal or should I be investigating our central heating system to find out why? Which motorised valves do you recommend I use?
  2. G

    How do I shut off a bathroom radiator with angles valves?

    My bathroom radiator is very hot in a small room and I would like to shut it off but can’t work out how. There are two valves one at each side at the bottom with a small prong sticking out of each one. I don’t know what the difference is between them or even if that is what I have to turn or how!
  3. 2

    Rad not heating up. Warm water through both valves.

    I have a house with 15 rads in it. In a bedroom upstairs I have a rad that isn't heating up. This rad was moved about 5 years ago with 1/2inch plastic pipe to new location in the same room but was never turned on. Tonight I tried to blead it but then removed the rad, emptied it and when off...
  4. E

    Isolate shower to service valves

    Hi All, new here and need some help. I’ve just bought a house with a built in Mira 915b shower. The valves are playing up so I want to remove them to put new o rings and grease on. Trouble is I can’t isolate the water to it. Hot is fed from the cylinder and the feed has a gate valve which is...
  5. E

    Tool to undo the non return valves on shower mixer?

    I am trying to undo the non return valves on my shower to clean them but they won't budge, I guess there is a tool for doing this but can't find one on line - help would be appreciated! It's basically a very wide slot but my largest screwdriver does not do the trick, the maintenance...
  6. G

    UFH must valves open before pump runs?

    The (rather sparse) manual with the controller that was supplied with my UFH (Hettaj describes the start sequence as - when demanded by the stat - valves open then pump runs. As the programmability of the stat is very basic, I’d like to replace it with a smart controller the same as I use on...
  7. J

    Changing radiator with new valves and reducers

    Hi all,I am looking for some advice,I am doing a bathroom refurbish for my daughter,I have to change the existing radiator for a newer type,my problem is as the lives in a ground floor flat,I do not have access to any loft header tank.I am surmising it is a gravity fed system,it is not a combi...
  8. B

    Incredibly stiff radiator valves

    I'm having problems with 1/2" x 15mm lockshield/manual radiator valves that I've bought from one of the major suppliers who mainly sells goods originating from China or India. Apart from the first lot which came in individual bags labelled as 1/22 X 15 but contained 1/2" X 10 they've sent 3...
  9. D

    Connecting a Magna Cleanse to radiator valves

    I've just acquired a Magna Cleanse (MC) to use with a rental property I have that has a Magna Clean. Before I go to the rental property, I wanted to do a trial run at home. At home I don't have a Magna Clean due to the boiler F&R pipes being in a wall and boxed in and the boiler is outside on a...
  10. S

    Are Bulldog TRV valves interchangeable?

    Hi All, I have a number of Bulldog TRVs installed to my radiators (15mm pipe) and most have snapped or broken. :( I would like to replace just the TRV head (not the valve), so that I don't have to drain the rads. Are there any like-for-like alternatives that I can buy from screwfix? They have...
  11. T

    Cause of intermittent noise from pump and zone valves

    Open vented fully pumped oil fired system. Works well but occasionally (every few days or do) loud throbbing noise from pipes directly above boiler. Goes away if system switched off and then immediately on again. New pump and no benefit from replacing zone valves. Any ideas gratefully received
  12. Bogart

    Flow rates through 2 and 3 port valves.

    Yes it me again with another question. I keep reading that one will get a better flow rate in an S plan than in a Y plan. Now I can see that being valid if both heating and hot water are called for but if only one surely the flow rate will be the same for both plans? Finally are there any makes...
  13. C

    Automatic bypass and radiator thermostatic valves

    Hi If the radiator valves are not demanding much heat and are near closed then the automatic bypass should be cutting in. I have a few queries that may be obvious but not to me as old system did not have an automatic bypass. [1] When it comes in it is shunting some of the hot water, will this...
  14. L

    Getting a smart heating (Tado): Dynamic Valves? How important is the type of TRV?

    Hi, I'm getting a Tado smart heating system (have a gas combi boiler). I don't have TRVs currently, so I need to get a plumber to replace my old valves and get TRVs everywhere. So I might as well get good ones, and it doesn't really matter whether one costs €15 or €25. I found the Danfoss...
  15. BuilderDan

    Multiple differential bypass valves

    Is it ok to have more than one bypass valve on a system? Planning an UFH system (heat source supplied by air-water heat pump) with 2 manifolds, each with 6 circuits. Each manifold has its own motorized isolation valve connected to a room thermostat controller. Obviously the system needs a bypass...
  16. P

    Removing two isolation valves in awkward spot (on heating pipework)

    Hi folks There's a couple of isolation valves on our radiator pipework (vented system). One started to weep a while back, but luckily stopped after a bit of tweaking. I've since learned they shouldn't be there, and so with some plumbing work coming up which will require a drain down, I'm...
  17. P

    heating zone valves

    Can I run a motorised zone valve and room thermostat from a 240V supply to control a single radiator when the heating is on? Meaning the valve will be open when the room is below the temperature set on room thermostat without turning the boiler on / valve will close shutting off flow to a...
  18. T

    Good reliable side-entry valves

    I am SO fed up with failing side-entry valves on toilet cisterns and water tanks. They've all been engineered down to something as flimsy as a milk carton, and they seem to last no time at all and start leaking. I'd happily pay more for a good quality one - but not twice as much for the same...
  19. Scott_D

    Zone Valves

    What are the best zone valves in your opinion? I mostly fit honeywell but as prices creep up I am thinking are they any better than danfoss, drayton EPH?
  20. S

    Rad valves with O-rings

    Some RAD valves come with O-rings, whereas the majority do not and I just wonder if one is better than the other or whether it makes no difference whatsoever? Reason I ask the question is that I have spent ages looking at valves and have settled on the ones in the link, but I’ve never used...

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