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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Torbeck valve and hammer
Umm... of the liquid variety, not 16oz metal :-)
Recently replaced a traditional ball valve in the upstairs loo with a Torbeck. Fantastic filling - much quieter, except that when it switches off there is a fantastic "bang" from the pipework. Is there any way to stop this? The bathroom feed seems to come straight from the mains by the way, rather than through the header tank, if that makes any difference. TIA Hwyl! M. -- Martin Angove: http://www.tridwr.demon.co.uk/ Two free issues: http://www.livtech.co.uk/ Living With Technology .... There is no gravity--The earth sucks! |
#2
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Torbeck valve and hammer
On Sun, 28 Mar 2004 23:42:59 +0100, Martin Angove
wrote: Umm... of the liquid variety, not 16oz metal :-) Recently replaced a traditional ball valve in the upstairs loo with a Torbeck. Fantastic filling - much quieter, except that when it switches off there is a fantastic "bang" from the pipework. Is there any way to stop this? The bathroom feed seems to come straight from the mains by the way, rather than through the header tank, if that makes any difference. It sure does. Did you put in the HP flow reducer? If the flow is still too high, try including a service valve in the pipe as well, and adjust down a bit. ..andy To email, substitute .nospam with .gl |
#3
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Torbeck valve and hammer
Andy Hall wrote:
The bathroom feed seems to come straight from the mains by the way, rather than through the header tank, if that makes any difference. It sure does. Did you put in the HP flow reducer? If the flow is still too high, try including a service valve in the pipe as well, and adjust down a bit. A few pipe clips might help as well if you have any lenghts of pipe that are able to move about too much. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#4
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Torbeck valve and hammer
In message ,
John Rumm wrote: Andy Hall wrote: The bathroom feed seems to come straight from the mains by the way, rather than through the header tank, if that makes any difference. It sure does. Did you put in the HP flow reducer? If the flow is still too high, try including a service valve in the pipe as well, and adjust down a bit. [Andy] The HP flow reducer made filling excruciatingly slow, so I put the LP one in instead. Mains is 15mm from the road. To be honest, the bang was better without either, but I was a bit worried about the amount of water trying to squeeze down that polythene tube! Unfortunately, there's no room for a valve on the pipe to the cistern as it disappears directly into a wall... A few pipe clips might help as well if you have any lenghts of pipe that are able to move about too much. [John] Likewise. I suppose there *may* be some access to the pipe somewhere, but it comes up through the floor in the downstairs loo, straight up into the ceiling which is the floor of the bathroom, and then under the bath (under the floor) to the wall by the loo. None of the floorboards have been up since the house was built, even the bathroom suite is original (1967), and the bit of wall (wood clad, mind you) in which the pipe is buried is partly tiled. Is there any kind of "capacitor" I could fit near the incoming perhaps? Hwyl! M. -- Martin Angove: http://www.tridwr.demon.co.uk/ Two free issues: http://www.livtech.co.uk/ Living With Technology .... Govt investigations contribute more to amusement than knowledge. |
#5
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Torbeck valve and hammer
"Martin Angove" wrote in message ... In message , John Rumm wrote: Andy Hall wrote: The bathroom feed seems to come straight from the mains by the way, rather than through the header tank, if that makes any difference. It sure does. Did you put in the HP flow reducer? If the flow is still too high, try including a service valve in the pipe as well, and adjust down a bit. [Andy] The HP flow reducer made filling excruciatingly slow, so I put the LP one in instead. Mains is 15mm from the road. To be honest, the bang was better without either, but I was a bit worried about the amount of water trying to squeeze down that polythene tube! Unfortunately, there's no room for a valve on the pipe to the cistern as it disappears directly into a wall... A few pipe clips might help as well if you have any lenghts of pipe that are able to move about too much. [John] Likewise. I suppose there *may* be some access to the pipe somewhere, but it comes up through the floor in the downstairs loo, straight up into the ceiling which is the floor of the bathroom, and then under the bath (under the floor) to the wall by the loo. None of the floorboards have been up since the house was built, even the bathroom suite is original (1967), and the bit of wall (wood clad, mind you) in which the pipe is buried is partly tiled. Is there any kind of "capacitor" I could fit near the incoming perhaps? See my previous post. I assume this is on a toilet. Do you really need super fast fillups? Probably not. This toilet when filling may steal pressure from a much need outlet, like a shower. You don't have a large bore mains pipe. I put on Torbecks because they are quieter than normal valves, not because they fill up fast. It is worth putting them on cold water tanks to get them filled ASAP. Also when a normal ballcock is near closed is restricts the flow and may cause high pitched sound. |
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Torbeck valve and hammer
In message ,
"IMM" wrote: See my previous post. I assume this is on a toilet. Do you really need super fast fillups? Probably not. This toilet when filling may steal pressure from a much need outlet, like a shower. You don't have a large bore mains pipe. I need it faster than it filled with the HP restrictor fitted! With the LP restrictor it fills slightly slower than with none, I dunno, maybe a minute versus 45 seconds, but with the HP restrictor it seems to take forever. At the moment there are five adults, two (young) children and two toilets in this house so yes, they do need to refill reasonably quickly! The shock arrestor sounds like a good idea though. I put on Torbecks because they are quieter than normal valves, not because they fill up fast. It is worth putting them on cold water tanks to get them filled ASAP. Also when a normal ballcock is near closed is restricts the flow and may cause high pitched sound. We put Torbecks on because the ball valves had finally given up the ghost. They are nearing 40 years old, and no amount of replacement washers seemed to get them working properly again. The quiet fill was a secondary consideration, but is *very* useful at night. Hwyl! M. -- Martin Angove: http://www.tridwr.demon.co.uk/ Two free issues: http://www.livtech.co.uk/ Living With Technology .... Famous Quotes: "...and tits doesn't belong on the list!" - G. Carlin |
#7
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Torbeck valve and hammer
Unfortunately, there's no room for a valve on the pipe to the
cistern as it disappears directly into a wall... A water hammer arrester (effectively a tiny expansion vessel) will cure the bang. However, you'll have to have some access to the pipe to fit it, unless you manage to contrive a solution internal to the cistern with a T-piece and pipe bender. Christian. |
#8
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Torbeck valve and hammer
In message ,
"Christian McArdle" wrote: Unfortunately, there's no room for a valve on the pipe to the cistern as it disappears directly into a wall... A water hammer arrester (effectively a tiny expansion vessel) will cure the bang. However, you'll have to have some access to the pipe to fit it, unless you manage to contrive a solution internal to the cistern with a T-piece and pipe bender. Yes, that's the sort of thing I'm after... it's just that the pipe isn't (easily) accessible closer than... ooh, 4m to the toilet. Having said that, we also get bang when taps are closed too quickly, particularly in the kitchen where they are 1/4 turn ceramic disc things, so an arrestor somewhere more central in the pipework might not be a bad idea. Hwyl! M. -- Martin Angove: http://www.tridwr.demon.co.uk/ Two free issues: http://www.livtech.co.uk/ Living With Technology .... I'm not dead; I'm metabolically challenged. |
#9
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Torbeck valve and hammer
Martin Angove wrote:
Is there any kind of "capacitor" I could fit near the incoming perhaps? Yes... have a look at the "Shock Arrester" (order code 11355) on www.besltd.co.uk -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#10
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Torbeck valve and hammer
"Martin Angove" wrote in message ... Umm... of the liquid variety, not 16oz metal :-) Recently replaced a traditional ball valve in the upstairs loo with a Torbeck. Fantastic filling - much quieter, except that when it switches off there is a fantastic "bang" from the pipework. Is there any way to stop this? The bathroom feed seems to come straight from the mains by the way, rather than through the header tank, if that makes any difference. The Torbeck should be set to have a flow no more than what the overflow can take. If you want more flow, then you may need to update the overflow pipe size. Once you have the flow you want or can get, and the thump is still there, then fit a shock arrestor from: http://www.bes.ltd.uk Fit near the valve as as possible. If the Tobeck is on a toilet, install a new siphon that overflows into the toilet bowl, then no problems with overflows pipes and sizes. Have the Torbeck flow as fast as you can get with any filling noise. If still a bump noise then install a shock arrestor. |
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