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turns

A turn is one round of rope on a pin or cleat, or one round of a coil. Turns can be made around various objects, through rings, or around the standing part of the rope itself or another rope. A turn also denotes a component of a knot.
When the legs of a loop are brought together and crossed the rope has taken a turn. One distinguishes between single turn, round turn, and two round turns depending on the number of revolutions around an object. The benefit of round turns is best understood from the capstan equation.

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  1. D

    Boiler pressure dropping to zero when heating turns off.

    Good afternoon, I am experiencing a pressure issue with my heating system and was hoping to receive additional insight as to what the problem could be. We have a biomass boiler and stratification tank set up and recently had an issue with boiler pressure dropping off when the system was cold...
  2. O

    How many turns when fitting compression isolation valve?

    I've never done one before and, as usual, Google is offering conflicting advice. I'm fitting one of these (from Screwfix, 15mm). I've read that ... Over tightening is the commonest cause of leaks. Once you've got it finger tight, you need to tighten a further half turn / full turn / one and a...
  3. A

    What part of my boiler turns my hot water off?

    I have a ideal logic combi boiler what valve turns my hot water off?
  4. H

    Sink faucet turns on sink and shower? so confused?

    So my wife sent me a video of our bathroom. When she turns on the sink faucet water comes out the tub faucet also. Currently the sink does not have a hot line going to it due to addition of a 2nd bathroom and future remodel plans for this bathroom. Also, writing from memory so could be wrong...
  5. B

    boiler makes a loud click and turns off fix needed

    I currently have a Maxi SOLO 2 RS boiler fitted in the house, last year the 3 way valve upstairs next to hot water green electric tank was changed. after changing the 3 way valve the boiler behaved in the same way. ( will make a clicking noise and would shut off with the pilot also going off...
  6. 7

    Turning on hot water turns on heating too?

    Hi, I moved into a new property this year and am used to having a combi boiler at my previous property. In my new property, the boiler is a British Gas 330+ and it's controlled by a British Gas UP2 programmer. The programmer has individual controls for turning the central heating on/off and...
  7. C

    Oil burner randomly turns on

    Hi my oil burner has started to turn on randomly. It doesn't heat anything but I can hear it running outside. What could be causing this.? The timer is set to off
  8. M

    Shower pump randomly turns on for a few seconds

    Hello All, I've got a negative head shower pump which turns on randomly for a few seconds when not in use. I've checked that the shower and all the taps are off and that none of the taps are leaking. A plumber diagnosed the issue as a faulty pump and installed a new Salomander 1.8 Bar...
  9. M

    Shower pump turns off every 20 seconds or so

    I've just had some boiler work done yesterday where the mains water had to be switched off. The shower pump (Monsoon make) now only switches on for 20 seconds then powers off and back on again for 20 seconds when I try to turn the shower on. It stays on longer if I put the mixer to hot water...
  10. D

    Monobloc ceramic-cartridge tap turns the 'wrong'way

    Just replaced my ageing basin and bath taps and wastes with appropriate Bristan equivalents. All but one have conventional valves; , the one exception – a N SNK EF C 1901 Easyfit Kitchen Sink Mixer monobloc – has ceramic cartridges and both H and C turn the ‘wrong’ way (clockwise to turn on)...
  11. D

    thermostatic turns cold after 3mins

    having nice hot shower then water turns cold for couple mins then hot again, cycle continues wb 35cdi 9yr old, BUT when heating not on shower runs nice and hot and doesnt change answers please
  12. J

    Central heating turns off after an hour or so

    new here and apologies for my first post being a question about my own system. Vaillant Thermocompact 620e danfoss fp715 programmer Danfoss hpa2 motorised control valves Danfoss mechanical in room thermostat The hot water works fine. The central heating comes on as programmed and then shuts...
  13. D

    Boiler over heats and turns off

    Hi everyone. I have the old style boiler, basically last year it started not working after being on for 10 mins.. Replaced the pump and 3 way port valve cleared the lines, bled everything, cleaned it all out Etc. Literally done most things. Basically it will work bit o my if I manually position...
  14. C

    Water pump turns off as shower temperature is increased

    Hi all, We recently moved into our house and have had a few issues with the cold water and showers. The cold water goes from the tank through a water pump to the shower. hot water is fed from a combi-boiler. If you turn the shower on with the temp set to cold, you can hear the water pump kick...
  15. SlimD

    Baxi solo 2pf turns on off on off repeatedly

    When it starts up the fan comes on for half a second then off, then on, off, on, etc... Air pressure switch seems to be making. Both overheat & thermostat ok Potentiometer?
  16. L

    One radiator not heating up - too many close pipe turns?

    Hello! My name is Luke. I am a new joiner to this forum. I have a problem with one of the vertical radiators I installed. It doesn't heat up at all. The connecting pipes are cold. I tried closing all radiators except for the one in question, but nothing changes (there is a bypass valve...
  17. C

    heating only turns on if hot water is turned on then off...

    hi, have a worcester highflow 4.5. working fine until recently where the central heating stopped coming on, although I can manually operate the diverter valve and have it heat that way (if I lock the diverter valve open). So I thought the synchron valve was the issue, replaced that. Now it seems...
  18. M

    Pump turns off on cold

    Hey everyone ! so first off im new here and also i dont really know much about plumbing lol so please bare with me We currently have a mixer shower and a salamander ct50 pump (as the pressure was bad) that we've had running fine for a few years now. Last week my sister stopped the shower (she...
  19. T

    Tap takes 2 turns to come on, then sprays full blast

    I have a problem with just the hot water tap in my kitchen. For the last few months, it has taken several turns before any water will come out. Once the water does come out, it jets out at a pressure equivalent to the number of turns I've had to make (i.e. high pressure!). I can then turn the...
  20. R

    Boiler turns off and reignites frequently

    Hi all, FYI I already had an issue with my boiler before in this post, but now there’s another issue (#post925402) The issue above was resolved - it turned out to be the sealant on the boiler which was eroded which let air get to the boiler (apparently). So now we have a new issue. The boiler...
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