valves

  1. C

    Do I have to bleed air out of the water in the boiler?

    Hi.Drained the system today after running for a week or so with radiator flush in. Turned water supply back on but,stupidly only bled upstairs radiators...Now system is not getting warm and boiler only kicks in for short stints. Bled complete system and opened valve by the 3 way / pump.lots of...
  2. B

    Single/Double/NRV Check Valves Query

    Good morning, I have a query about single check valves/double check valves/non return valves and their purpose. I moved into a flat built in the 1960s and I think the bathroom was last upgraded around 2007 perhaps even before. I am going to get it completely redone next week (new suite/.
  3. M

    Life expectancy of header tanks and ball valves, relocate or replace.

    I am going to move my central heating header tank and started to think about the life expectancy of various plumbing items. The tank is polypropylene and has a brass ball valve with plastic float. It’s 40 years old. With the issues of sustainability etc, it’s it likely that these items will...
  4. S

    Swapping handles Pegler Lever ball valves

    Quick question. I installed some Pegler lever ball valves (22mm, water) and because I was tired I messed up my red/blue hot/cold colour code. Rather than swap the valves over (which I can do) can I just swap the handles over?
  5. falable

    Is it possible to use jg speedfit pipe and fitting, to replace small section of copper?

    hi, so we had tried to fit an isolation valve into copper pipe that came close from the mains supply, but i'm not proud of it. we had to leave the mains water valve at half pressure or else the fittings would leak/pop off. It was my first attempt at plumbing and i assumed i could easily move the...
  6. S

    Thermostatic Mixer Shower Removing non-return valves (gravity fed)

    I am not a professional plumber but I thought I would share this tip as it defeated the professional plumber who installed my new shower and there seems to be no information about this on the internet. I should say first (before I get flamed) that non-return valves (NRVs) are mandatory where a...
  7. A

    Full bore isolating valves- which way round to fit?

    Hello chaps, Just fitting some full bore isolating valves. No arrows on the casing for water flow direction. The screwed joint is one side of the ball valve. Is there any preference with which way to fit them ? Does it matter? Cheers
  8. OffshoreGas

    Isolating valves and drain points

    More often than not when I go to do any work on a domestic system there’s no way of isolating what I want to work on so end up having the drain the system. To make things worse it’s surprisingly common there’s nowhere to drain the system. Do other people find this too and if so why do you think...
  9. D

    Constant flow automatic bypass valves

    My earlier post entitled Honeywell ABV setting raised several issues and a number of well-informed comments (thank you). One topic in particular seems worth pursuing on its own, hence the present post. Your comments will be appreciated. Widely-used domestic CH pumps such as the Grundfos UPS2...
  10. A

    Does my system need h-piece and lockshield valves?

    Hello 2 storey building 3 apartments per floor Waterborne heating system description: Each apartment has separate heating distribution manifold cabinet. Manifold based distribution system where each panel is served by its own circuit. STAD valve in the second floor manifold cabinet for the...
  11. A

    Leaking radiator after bleeding valves

    Hi everyone, I was wondering if someone could provide me some advice. Due to high boiler pressure, I bled some of my radiators. However, one of radiators is now leaking on both sides from a nut at the spindles? Could some explain to me why this happened and what I can do about it? I’m...
  12. S

    Towel rail valves open or closed!

    Hi I’ve just fitted a towel rail. Should both valves be open to fill it? And stay open once filled and bleed? Thanks
  13. P

    Advice on Air Admittance Valves please

    Hi I have a client who has three WC's served by one long waste pipe feeding into a soil pipe. When the WC on the far left is flushed it causes either one or both of the other WC 's to overflow. I think it must be because an Air Admittance Valve has not been fitted? Would you agree? If so what...
  14. N

    Thermostatic Rad Valves not working correctly

    Hi we have recently had a new Ideal Logic+ boiler installed the plumber has put thermostatic radiator valves in all of the rooms apart from where the thermostat is. The system is fed by micro-bore downstairs and half inch upstairs. The rooms with 2 radiators is where the problem is one radiator...
  15. S

    Check valves and mixer taps

    I noticed that the mixer tap was making the sound of running water when the main valve was open but the tap and the spray attachment was closed. I theorised that cold water was running into the hot pipe, as it is much higher pressure. I went online and concluded that the solution was a check...
  16. CorgiDirect

    Excellent Prices on CORGI Controls & Valves. Synchron Motor Only £7.08 ex vat

    Excellent Prices on CORGI Controls & Valves. CORGI SYNCHRON MOTOR only £7.08 ex vat CORGI 22MM AUTOMATIC BYPASS VALVE Only £9.92 ex vat. View Range Here
  17. R

    Rad Valves - can you swap the TRV?

    Hi guys, My first post so be gentle! I want to get this rad and the TRV will be sticking out as per this picture: I'll be replacing this with my own TRV which will mean the whole thing sticks out 12-13cm from the wall (far too much). My question is - can I swap the valve connections around...
  18. C

    UFH problem: flow valves not rising and falling

    Hi all, I have an issue with my UFH that I hope you can help with. We have UFH but have never been 100% sure that it works as it should: the lounge/kitchen (one room) has been fine, but the bedrooms have always been a bit chilly. I've put this down to them being carpeted and it taking longer...
  19. P

    Flow regulator ball valves

    I got given a bag of unused CP961 flow regulator ball valves (same as in the pic) years ago by my mum (she found them in rental she was clearing out between tenants), they ended up at the bottom of a box and promptly forgot about them til I was having a tidy up earlier today. I've tried opening...
  20. L

    2 port valves __________

    Are 2 port valves necessary on the flow of heating if a underfloor heating manifold is used such as this one in the picture? As far as i was aware the manifold acted as a valve. Thanks
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