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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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#1
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Water pipes go BANG!
Whenever I turn off any tap (H or C) in my house, there is an almighty bang
as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks |
#2
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"IMM" wrote in message
... "Dave P" wrote in message ... Whenever I turn off any tap (H or C) in my house, there is an almighty bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? Sometime if a tap washer is lose this can occur. Check the washers and replace to suit. They are so cheap you may as well replace all of them. I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks Fit a shock arrestor from BES: http://www.bes.ltd.uk Fit as near to the offending tap as possible. This will fully eliminate the problem. Thanks for this - however it's ALL taps, so the shower, bath taps, sink taps, kitchen taps and washing machine all do this (therefore washers unlikely to be the culprit, also all taps are brand new too). So hopefully I would't need 9 of them!? If I put these arrestors in the H & C pipes under the bath - therefore pretty close to bath/sink/shower, would that sort out the kitchen (probably about 6m of pipework away)? Thanks Dave |
#3
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"Dave P" wrote in message ... "IMM" wrote in message ... "Dave P" wrote in message ... Whenever I turn off any tap (H or C) in my house, there is an almighty bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? Sometime if a tap washer is lose this can occur. Check the washers and replace to suit. They are so cheap you may as well replace all of them. I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks Fit a shock arrestor from BES: http://www.bes.ltd.uk Fit as near to the offending tap as possible. This will fully eliminate the problem. Thanks for this - however it's ALL taps, so the shower, bath taps, sink taps, kitchen taps and washing machine all do this (therefore washers unlikely to be the culprit, also all taps are brand new too). So hopefully I would't need 9 of them!? If I put these arrestors in the H & C pipes under the bath - therefore pretty close to bath/sink/shower, would that sort out the kitchen (probably about 6m of pipework away)? You only need one arrestor. In systems were there is no water meter, expansion is taken up down the mains pipe. Some water meters have check valves in them preventing this occurring. So, you have to install expansion provision yourself. They are small spheres. In some cases when water meters have been installed the extra pressure inside the installation can blow combi gaskets, shower joints and tap joints. Some combi's come with arrestors already fitted, others have provision. Is the system a mains pressure system on H&C? What types of taps do you have? 1/4 turn efforts? |
#4
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Whenever I turn off any tap (H or C) in my house, there is an almighty
bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks Is it not just a pipe that isnt fastened securely to a wall and the pressure increase when turning off a tap makes it bang against the wall? |
#5
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"IMM" wrote in message
... "Dave P" wrote in message ... "IMM" wrote in message ... "Dave P" wrote in message ... Whenever I turn off any tap (H or C) in my house, there is an almighty bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? Sometime if a tap washer is lose this can occur. Check the washers and replace to suit. They are so cheap you may as well replace all of them. I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks Fit a shock arrestor from BES: http://www.bes.ltd.uk Fit as near to the offending tap as possible. This will fully eliminate the problem. Thanks for this - however it's ALL taps, so the shower, bath taps, sink taps, kitchen taps and washing machine all do this (therefore washers unlikely to be the culprit, also all taps are brand new too). So hopefully I would't need 9 of them!? If I put these arrestors in the H & C pipes under the bath - therefore pretty close to bath/sink/shower, would that sort out the kitchen (probably about 6m of pipework away)? You only need one arrestor. In systems were there is no water meter, expansion is taken up down the mains pipe. Some water meters have check valves in them preventing this occurring. So, you have to install expansion provision yourself. They are small spheres. Surely 1 arrestor for hot and one for cold? (I don't have a meter.) In some cases when water meters have been installed the extra pressure inside the installation can blow combi gaskets, shower joints and tap joints. Some combi's come with arrestors already fitted, others have provision. Is the system a mains pressure system on H&C? What types of taps do you have? 1/4 turn efforts? Yes, fully mains pressure; yes, taps are the 1/4 turn ceramic disc types (which no doubt exacerbates the problem I'll admit; although it also happens with the shower mixer which presumably has conventional rubber seals inside). Thanks David |
#6
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"Dave P" wrote in message ... "IMM" wrote in message ... "Dave P" wrote in message ... "IMM" wrote in message ... "Dave P" wrote in message ... Whenever I turn off any tap (H or C) in my house, there is an almighty bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? Sometime if a tap washer is lose this can occur. Check the washers and replace to suit. They are so cheap you may as well replace all of them. I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks Fit a shock arrestor from BES: http://www.bes.ltd.uk Fit as near to the offending tap as possible. This will fully eliminate the problem. Thanks for this - however it's ALL taps, so the shower, bath taps, sink taps, kitchen taps and washing machine all do this (therefore washers unlikely to be the culprit, also all taps are brand new too). So hopefully I would't need 9 of them!? If I put these arrestors in the H & C pipes under the bath - therefore pretty close to bath/sink/shower, would that sort out the kitchen (probably about 6m of pipework away)? You only need one arrestor. In systems were there is no water meter, expansion is taken up down the mains pipe. Some water meters have check valves in them preventing this occurring. So, you have to install expansion provision yourself. They are small spheres. Surely 1 arrestor for hot and one for cold? (I don't have a meter.) In some cases when water meters have been installed the extra pressure inside the installation can blow combi gaskets, shower joints and tap joints. Some combi's come with arrestors already fitted, others have provision. Is the system a mains pressure system on H&C? What types of taps do you have? 1/4 turn efforts? Yes, fully mains pressure; yes, taps are the 1/4 turn ceramic disc types (which no doubt exacerbates the problem I'll admit; although it also happens with the shower mixer which presumably has conventional rubber seals inside). The 1/4 turn don't help at all. Yes. I would put one sock arrestor on the hot and one on the cold. They are about £10 each. |
#7
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#8
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IMM wrote:
"Dave P" wrote in message ... "IMM" wrote in message ... "Dave P" wrote in message ... "IMM" wrote in message ... "Dave P" wrote in message ... Whenever I turn off any tap (H or C) in my house, there is an almighty bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? Sometime if a tap washer is lose this can occur. Check the washers and replace to suit. They are so cheap you may as well replace all of them. I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks Fit a shock arrestor from BES: http://www.bes.ltd.uk Fit as near to the offending tap as possible. This will fully eliminate the problem. Thanks for this - however it's ALL taps, so the shower, bath taps, sink taps, kitchen taps and washing machine all do this (therefore washers unlikely to be the culprit, also all taps are brand new too). So hopefully I would't need 9 of them!? If I put these arrestors in the H & C pipes under the bath - therefore pretty close to bath/sink/shower, would that sort out the kitchen (probably about 6m of pipework away)? You only need one arrestor. In systems were there is no water meter, expansion is taken up down the mains pipe. Some water meters have check valves in them preventing this occurring. So, you have to install expansion provision yourself. They are small spheres. Surely 1 arrestor for hot and one for cold? (I don't have a meter.) In some cases when water meters have been installed the extra pressure inside the installation can blow combi gaskets, shower joints and tap joints. Some combi's come with arrestors already fitted, others have provision. Is the system a mains pressure system on H&C? What types of taps do you have? 1/4 turn efforts? Yes, fully mains pressure; yes, taps are the 1/4 turn ceramic disc types (which no doubt exacerbates the problem I'll admit; although it also happens with the shower mixer which presumably has conventional rubber seals inside). The 1/4 turn don't help at all. Yes. I would put one sock arrestor on the hot and one on the cold. They are about ?10 each. I think I'd go for a generic filter, rather than just a sock arrestor. |
#9
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If your water pressure is currently not that great and you get banging even
from standard taps/mixers, then I'd check how well the pipes have been secured rather than just assume it is just water hammer. "Dave P" wrote in message ... Whenever I turn off any tap (H or C) in my house, there is an almighty bang as the water shuts off unless I do it v-e-r-y slowly indeed. Is this known as 'water hammer', or is that just the 'juddering' sound some folk experience? I've been googling about this here, but am nor sure how to cure this easily? I don't want to close the stop cock or any in-line valves to reduce the pressure, as it's really not that great anyway (and I have a combi feeding the shower - the whole place has mains pressure water, no H or C tanks). Is an 'arrestor' what I need, or is that just for juddering pipes? If this would do the trick, does it matter whereabouts it is fitted in the system? Thanks |
#10
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"Rob Morley" wrote in message
t... In article , "a" says... Is it not just a pipe that isnt fastened securely to a wall and the pressure increase when turning off a tap makes it bang against the wall? That's what I'd suspect - find the loose pipe and fix it securely, or wrap it in insulation so it bangs more gently :-) Well I agree it might be that, but if it is, it's impossible to isolate...trouble is it could be anywhere under the first floor, which has just had a new carpet laid professionally; or could be within an area now boxed in by plasterboard. So hopefully not! Would the arrestor solution work in this scenario, by stopping the pipes moving? Would seem logical to me... Dave |
#11
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Dave P wrote:
"Rob Morley" wrote in message t... In article , "a" says... Is it not just a pipe that isnt fastened securely to a wall and the pressure increase when turning off a tap makes it bang against the wall? That's what I'd suspect - find the loose pipe and fix it securely, or wrap it in insulation so it bangs more gently :-) Well I agree it might be that, but if it is, it's impossible to isolate...trouble is it could be anywhere under the first floor, which has just had a new carpet laid professionally; or could be within an area now boxed in by plasterboard. So hopefully not! Have someone turn on and off a tap. Place your ear against a wall. Repeat until it's loudest. |
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