Oz07 Posted October 9, 2019 Share Posted October 9, 2019 @joe90 So you'd just turn off the whole manifold? Is it not preferable to isolate each run? Take it you have a service valve before each tap etc? Link to comment Share on other sites More sharing options...
joe90 Posted October 9, 2019 Share Posted October 9, 2019 (edited) 14 minutes ago, Oz07 said: @joe90 So you'd just turn off the whole manifold? Is it not preferable to isolate each run? Take it you have a service valve before each tap etc? Why? No, apart from outside tap and washing machine I have no service valves. If I suffer a leaking tap washer, shower valve leak ETC it will take me a very short time to sort out. (I am retired,?) if something is likely to take time to sort out I can always fit a temporary blank at the manifold by de-mounting the pipe and using a plug. Edited October 9, 2019 by joe90 Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 Labelling to my hearts content ! 4 Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 A thing of beauty. How come the outside tap is coming off that? The O/S tap should come off either directly after, or even better, before the stopcock to the house. Tee-ing off there would be a huge drain on flow for the showers, but if it's not used much don't panic. 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 10 minutes ago, Nickfromwales said: A thing of beauty. How come the outside tap is coming off that? The O/S tap should come off either directly after, or even better, before the stopcock to the house. Tee-ing off there would be a huge drain on flow for the showers, but if it's not used much don't panic. Didn’t think of that . Outside tap will hardly ever be used so i’ll Let it go ? Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 Permission granted...... 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 Actually I could ‘throttle’ the outside tap ( planned to do this on toilets anyway ) by adjusting the isolator value to restrict flow . Link to comment Share on other sites More sharing options...
Barney12 Posted October 15, 2019 Share Posted October 15, 2019 Just now, pocster said: Actually I could ‘throttle’ the outside tap ( planned to do this on toilets anyway ) by adjusting the isolator value to restrict flow . Don't do it! As good as those HEP manifolds are they tend to hammer terribly if you restrict them. 1 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 18 minutes ago, Barney12 said: Don't do it! As good as those HEP manifolds are they tend to hammer terribly if you restrict them. Really ? They generate that much noise if not fully open or fully closed ? . That was one of my reasons for choosing these nice expensive brass manifolds - thinking I could be clever and control flow ? Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 I’ll do the hot one tomorrow- too much excitement for one day ! Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 (edited) On 15/10/2019 at 15:22, pocster said: Actually I could ‘throttle’ the outside tap ( planned to do this on toilets anyway ) by adjusting the isolator value to restrict flow . They become quite noisy if you do that. If you're going to strangle the flow then fit a restrictor in the outlet. Beware reducing the flow to WC's as they'll take forever to fill and get on your nerves when you flush the loo at night. edit : restrictor ( not reducer ) Edited December 31, 2019 by Nickfromwales 1 Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 3 minutes ago, pocster said: Really ? They generate that much noise if not fully open or fully closed ? . That was one of my reasons for choosing these nice expensive brass manifolds - thinking I could be clever and control flow ? Nope. On or off, isolators NOT attenuators Flow restriction always at the outlet. 2 Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 (edited) 3 minutes ago, Nickfromwales said: Nope. On or off, isolators NOT attenuators Flow restriction always at the outlet. Ah ! So I have mid understood ! I assumed quite naturally they could do both I.e that was their function . Well attenuation at a outlet shouldn’t be an issue . For now i’ll Just stick ‘em all full on once ready for take off ! Boom ! - bet @Onoff took 6 months to do that bit ???? Edited October 15, 2019 by pocster Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 Can I ask @Nickfromwales out of interest ; why attenuate at outlet not source ? . What’s the issue ? Or is it just bad practice? Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 32 minutes ago, pocster said: Can I ask @Nickfromwales out of interest ; why attenuate at outlet not source ? . What’s the issue ? Or is it just bad practice? Noise. Ball valves sheer the flow of water and create a horrible 'rushing' noise, whereas fitting one of these at the outlet connection is near silent by comparison 2 different definitions; Flow regulator / attenuator Isolation valve ( rotary / screw / lever ) 1 Link to comment Share on other sites More sharing options...
Pocster Posted October 15, 2019 Author Share Posted October 15, 2019 54 minutes ago, Nickfromwales said: Noise. Ball valves sheer the flow of water and create a horrible 'rushing' noise, whereas fitting one of these at the outlet connection is near silent by comparison 2 different definitions; Flow regulator / attenuator Isolation valve ( rotary / screw / lever ) Can’t you invent a noiseless flow regulator for at source? . Dragons Den will back you ?? Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 2 hours ago, pocster said: Can’t you invent a noiseless flow regulator for at source? . Dragons Den will back you ?? ? You could introduce it at the manifold if you are happy to fit an inline coupler. Would be experimental though as it would be pre pipe resistance. 1 Link to comment Share on other sites More sharing options...
Nickfromwales Posted October 15, 2019 Share Posted October 15, 2019 1 hour ago, Nickfromwales said: ? You could introduce it at the manifold if you are happy to fit an inline coupler. Would be experimental though as it would be pre pipe resistance. Ok, confusion reigns... Water flowing at full wallop all the way down the pipe, from the manifold to the outlet, then meets the restrictor and you can gauge the end flow rate pretty well. If you put the restriction at the source, eg the manifold, then you have a restricted flow at source and then it suffers further losses caused by the resistance of the pipe ( hydraulic dynamics iirc @PeterW ) and the number of twists and turns downstream, and that’s what I’m referring to as possibly problematic. Can be done at the manifold, but possibly a higher rated restrictor would he needed there vs one at the outlet in order to achieve the same result Now can I finish my steak? 1 Link to comment Share on other sites More sharing options...
Pete Posted October 15, 2019 Share Posted October 15, 2019 (edited) 7 hours ago, Nickfromwales said: They become quite noisy if you do that. If you're going to strangle the flow then fit a reducer in the outlet. Beware reducing the flow to WC's as they'll take forever to fill and get on your nerves when you flush the loo at night. never flush at night or else @ProDave will hear it!! Edited October 15, 2019 by Pete error 1 Link to comment Share on other sites More sharing options...
Triassic Posted October 16, 2019 Share Posted October 16, 2019 On 08/10/2019 at 16:03, pocster said: Ok ! So to supply domestic hot and cold intend to bolt these together . I do love them ; brass and isolation valve - don’t like the price though !.... So where is the best place to purchase these at a keen price? Link to comment Share on other sites More sharing options...
Pocster Posted October 16, 2019 Author Share Posted October 16, 2019 7 hours ago, Triassic said: So where is the best place to purchase these at a keen price? There is no keen price anywhere!! Link to comment Share on other sites More sharing options...
Pocster Posted October 17, 2019 Author Share Posted October 17, 2019 One thing i’ve Noticed when I screw these guys together sometimes you can’t get them lined up I.e you can’t tighten it any further so have to loosen it to get alignment. I presume some plumbers tape on the thread beforehand is the answer ? Equally the brass end cap has no rubber washer or anything. Tape again ??? Link to comment Share on other sites More sharing options...
redtop Posted October 17, 2019 Share Posted October 17, 2019 On 08/10/2019 at 19:27, Russell griffiths said: here ya go. Picture stolen from nick the welsh wizard. this is a thing of beauty. fancy a plumbing job in looe, cornwall ? Link to comment Share on other sites More sharing options...
Russell griffiths Posted October 17, 2019 Share Posted October 17, 2019 Just now, redtop said: this is a thing of beauty. fancy a plumbing job in looe, cornwall ? Get to the back of the queue pal. ? Link to comment Share on other sites More sharing options...
redtop Posted October 17, 2019 Share Posted October 17, 2019 ille throw in a load of harris fencing for free ? and a pasty 1 Link to comment Share on other sites More sharing options...
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