Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
OK so I finally got around to installing some toilets.
An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? -- Tim Lamb |
#2
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
On 01/08/18 11:33, Tim Lamb wrote:
OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? I'd be interested to see an answer to this too. When we replaced the bathroom basin taps with 1/4-turn ceramic ones, I'd forgotten that it would now be simple for "little hands" to turn the tap on full. As it is at mains pressure, you can imagine the result of doing that! So I also use the isolator valve to cut the flow right down. But, as you say, it is very noisy. -- Jeff |
#3
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
Jeff Layman wrote in newsjs58r$o1i$1@dont-
email.me: On 01/08/18 11:33, Tim Lamb wrote: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? I'd be interested to see an answer to this too. When we replaced the bathroom basin taps with 1/4-turn ceramic ones, I'd forgotten that it would now be simple for "little hands" to turn the tap on full. As it is at mains pressure, you can imagine the result of doing that! So I also use the isolator valve to cut the flow right down. But, as you say, it is very noisy. Look at "Pressure Reducing Valves" on a plumbing site. |
#4
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
Tim Lamb Wrote in message:
OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. -- -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#5
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
In message , Jim K
writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. -- Tim Lamb |
#6
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
On 01/08/2018 21:42, Tim Lamb wrote:
In message , Jim K writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. The French use isolating valves specifically for toilet cisterns and they seem to work better to adjust the flow, as they are not ball valves: https://www.leroymerlin.fr/v3/p/prod...wc-l1308217699 A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. The above link shows right-angle and in-line versions. There is probably something similar in the UK - I just happen to know them from France and from the toilet that I bought there and brought to the UK. SteveW |
#7
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
Tim Lamb Wrote in message:
In message , Jim K writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. Istr the noise is cavitation caused by the restriction of the valves, larger surface area = less cavitation = less noise. YMMV -- -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
#8
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
On Wednesday, 1 August 2018 23:18:41 UTC+1, JimK wrote:
Tim Lamb Wrote in message: In message , Jim K writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. Istr the noise is cavitation caused by the restriction of the valves, larger surface area = less cavitation = less noise. YMMV -- Big valve, small valve, the size of the orifice when restricted will be the same to have the same effect. A pressure reducing valve is the answer situated well away (whole house?) Sometimes the noise is caused by the water falling in the cistern. You can get a plastic "condom" that reduces this effect. Goes on the float valve outlet. |
#9
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
In message ,
harry writes On Wednesday, 1 August 2018 23:18:41 UTC+1, JimK wrote: Tim Lamb Wrote in message: In message , Jim K writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. Istr the noise is cavitation caused by the restriction of the valves, larger surface area = less cavitation = less noise. YMMV -- Big valve, small valve, the size of the orifice when restricted will be the same to have the same effect. A pressure reducing valve is the answer situated well away (whole house?) Sometimes the noise is caused by the water falling in the cistern. You can get a plastic "condom" that reduces this effect. Goes on the float valve outlet. These are all modern plastic jobs and don't have that problem. I am sure the bulk of the noise comes from the isolator valve and then transmitted through the supply pipework. -- Tim Lamb |
#10
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
In message , Steve Walker
writes On 01/08/2018 21:42, Tim Lamb wrote: In message , Jim K writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. The French use isolating valves specifically for toilet cisterns and they seem to work better to adjust the flow, as they are not ball valves: https://www.leroymerlin.fr/v3/p/prod...ie/equipement- wc-et-accessoires-de-robinet/robinet-d-arret-wc-l1308217699 A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. The above link shows right-angle and in-line versions. There is probably something similar in the UK - I just happen to know them from France and from the toilet that I bought there and brought to the UK. Hmm.. not come across anything like that here. Thanks. -- Tim Lamb |
#11
Posted to uk.d-i-y
|
|||
|
|||
Cistern control valves
harry Wrote in message:
On Wednesday, 1 August 2018 23:18:41 UTC+1, JimK wrote: Tim Lamb Wrote in message: In message , Jim K writes Tim Lamb Wrote in message: OK so I finally got around to installing some toilets. An earlier decision to use mains water is leading to noise where the isolator valve is used to control cistern water flow to less than the overflow will handle. Any suggestions? An inline restrictor of some sort? Are these valves the farty little screwdriver slot service valve things? If so try a bigger bore type. Yebbut... I think the issue is restricting the flow rate by creating a vortex/slot. A pressure regulator and restrictor would do a better job but there are 3 bogs and you are required to fit an isolating valve anyway. Bar showers have restrictors fitted. I just wondered if there was an easy fit, in line job. Perhaps those microbore tap connectors have their uses after all. Istr the noise is cavitation caused by the restriction of the valves, larger surface area = less cavitation = less noise. YMMV -- Big valve, small valve, the size of the orifice when restricted will be the same to have the same effect. Full bore lever valves don't make any noise when virtually 100% closed... -- -- Jim K ----Android NewsGroup Reader---- http://usenet.sinaapp.com/ |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
stop & waste valves, globe-type valves, and pressure regulator valves | Home Repair | |||
Cistern does not fill up - until cistern lid removed | UK diy | |||
Washing Machine Water Inlet Valves - Cheap Source of Solonoid Control Valves? | Home Repair | |||
Silent Cistern Valves | UK diy | |||
non-return valves, isolating valves and service valves | UK diy |