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flow

Recent contents Top users
  1. S

    Max distance for 10mm tails off 22mm flow and return

    I’m considering my options for moving (JG) pipework from an inaccessible place whilst the floor is up. One option might be to use 2 x JG 4-port manifolds, mounted in a much more convenient location. But, this would mean adding 2 - 3 metres to the 10mm tails (off flow and return) and i’m not sure...
  2. P

    Leaking flow pipe on Baxi 105e

    Hi, I've got a leaking flow pipe coming from the main heat exchanger. There is slow drip where it connects onto the main heat exchanger. Before I take it all apart could someone tell me if it's better to replace the whole flow pipe or can I just change the seal on it?. Kind regards, Joshua...
  3. M

    combined toilet bidet back flow prevention

    customer would like combined toilet bidet fitted, spray is fitted to the pan, not hand held hose, she has unvented system. does anyone know what back flow prevention can be used ? are check valves on supplies to the mixing valve sufficient ? wras advice seems unclear for unvented systems. thanks...
    • malc
    • Thread
    • flow toilet
    • Replies: 6
    • Forum: Boilers
  4. Scott_D

    Isolation valve flow limits?

    I know it depends on pressure but is there a rule of thumb limit to the litres per minute that can pass through a cheap 15mm isolation valve?
  5. Milan5baros

    HELP - Back to back WC's issue with cross flow

    Morning all, Struggling to resolve a problem. Back to back WC's in a fourth floor flat and the waste from toilet A(main bathroom) transfers into toilet B (ensuite) we have installed the McAlpine ARB 1 anti-cross flow valve on each side but it has only stopped solids and there is still some...
  6. G

    Warm flow combi boiler /No hot water

    Need help please... My Warmflow oil fired combi boiler will not supply hot water to my domestic taps but the central heating works fine. This is a dual pump system. I have linked out the connections on the boiler stat which causes the hot water pump and system to work and able to get very hot...
    • Ginny
    • Thread
    • boiler combi combi boiler flow hot water water
    • Replies: 1
    • Forum: Boilers
  7. L

    Will lowering water tanks by 15cm have any noticeable effect on gravity flow system?

    Hello, I live in a building that is a conversion of two terrace houses into several flats. We have 7 levels (basement, ground, 1st, 2nd, 3rd, 4rth, and 5th), and each level has two flats, except for the 5th floor, which is the attic and on one side there is a small studio and on the other side...
  8. G

    Vaillant ecoTEC Plus 938 - Low Flow Rate

    Hi guys. Hope you are able to help me, and thank you in advance for anyone who can contribute. I've got a Vaillant 938 and notice that the hot water output isn't near the claimed flow. I've tested the pressure at the stopcock and it's around 3 bar. I've tested the cold flow rate from the...
  9. C

    Low water flow to whole house

    I have a pressure reading of 75 psi to my house but the flow is very poor. We do not have a water softener or pressure regulator. The flow is about even on hot and cold taps. We ran a 5gal bucket test and after over 1min we were not even at half. This started about 1 year ago and has gradually...
  10. J

    Dropping flow rates over time.

    Hi folks. I'm looking for advise for troubleshooting dropping flow rate that I could look into myself until we are up and running and I can get a professional in. Over the last 6-8 weeks I've noticed that our water supply is dropping in flow rate and today I measured a tap running at 3.5...
  11. 2

    Recessed Shower Valve No Flow

    I've just fitted the recessed dual shower valve photographed. Flow was fine until I went to calibrate the temperature this morning, so twisted the bottom cartridge and adjusted the flow on the isolator valves. now there is no flow out of the head at all (isolation valves fully open) having put...
  12. S

    Low pressure/low flow

    Hi All, I live in a 400 yr old house although the pipework is only 3yrs old from the internal stopcock. I have a low water pressure / low flow problem that I wish to sort out. It's a 25mm incoming pipe stepped down to 22mm internally which then reduces to 15mm into the various taps. I have a...
  13. R

    Does air lock affect flow rate in UFH

    Hi all, having issues with my underfloor heating . Flow doesn’t stay hot as return just stays cold even though boiler is operating as it should . My question is does an airlock reduce the flow rates ? I can get good flow 4+ ltr / min through the loops but still the return and hence flow stays...
  14. R

    Underfloor heating flow won’t get up to temp

    Hi all. As above having issues with my UFH. Boiler fires up and works as normal . Issue is the return stays cold and as such when the boiler switches off when it reaches temp the flow stays about 35 degrees and the cycle continues . Have had it running with just one short loop open , pump on 3 ...
  15. Z

    Idea for those who have cash flow problem

    I had a terrible time finding a plumber and I am trying to think of a way to help him as I have one whom I trust implicitly thought that I could put a Medium sum of money in his account specifically to cover labour on future jobs As it’s only labour that is covered then there is no risk to...
  16. J

    Central heating flow/return 3 bed terrace - 15mm or 22mm

    My son has a 3 bed terraced house and a damp patch on a ground floor timber floor/wall that I think is caused by a pin hole/failed joint in the copper pipe. Rather than just do a localised repair I intend to replace all the ground floor pipe. The exisiting setup has 22mm pipe dropping down from...
  17. D

    Concern over flow of electric shower

    Hi, I have water immersion heater on a timer. Problem:I need more instant hot water - 5 people in house having daily showers. Currently we have 2 bathrooms which are fine for showers and pressure is decent enough (until hot water runs out!) There IS a pump to increase the pressure which works...
  18. Minidriver

    Boiler dhw flow adjustment

    Hi guys. New here. Basically I bought this house 2 yrs ago. Back when I bought it I took over an existing plan with British gas for my boiler servicing. Upon first service, I asked about hot water as if you turned the bath tap on more than 1/4 turn it ran like warm at best. He said he...
  19. W

    Why does oil not flow from elevated tank

    I have a Rayburn 308K oil burning stove (uses concentric wicks) It is fed from a tank which is around 3m (10ft) above the inlet of the stove. I have it around 20 years. Ever since I got it, if I run out of oil, the stove will not light after the tank is refilled. The only way I can get the oil...
  20. T

    List of DUAL FLOW taps

    Does anyone have a list of dual flow kitchen taps both mono and deck mixer types for mixed pressure supplies - Mains CW, Gravity hot. Trying to find one is a bloody nightmare. Thanks in advance.
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