Astra
Full Member
Posts: 219 
|
Post by Astra on Apr 28, 2021 19:39:21 GMT
Hi Guy's Quick Question I have a customer that needs me to change an internal stop cock Now the mains comes in Via the floor then straight into the stop cock then straight out into the wall ....OK now the customer asked can I fit a Ball Lever valve instead of a new stop cock only problem is no space to run both side by side... so am I aloud to just fit Ball lever Valve  What are your thoughts Please............ |
|
|
|
Post by battle1066 on Apr 28, 2021 20:18:29 GMT
Hi Guy's Quick Question I have a customer that needs me to change an internal stop cock Now the mains comes in Via the floor then straight into the stop cock then straight out into the wall ....OK now the customer asked can I fit a Ball Lever valve instead of a new stop cock only problem is no space to run both side by side... so am I aloud to just fit Ball lever Valve What are your thoughts Please............ What the rules are for your area could be different but typically this s the guide Stop valves to premises Schedule 2.4.10.3 Every supply and distributing pipe providing water to premises should be fitted with a stop valve to control the supply to those premises only. Stop valves at point of entry shall be screw down type complying with BS1010. |
|
|
|
Post by rocketmanbkk on Apr 29, 2021 6:31:57 GMT
Hi Guy's Quick Question I have a customer that needs me to change an internal stop cock Now the mains comes in Via the floor then straight into the stop cock then straight out into the wall ....OK now the customer asked can I fit a Ball Lever valve instead of a new stop cock only problem is no space to run both side by side... so am I aloud to just fit Ball lever Valve What are your thoughts Please............ What the rules are for your area could be different but typically this s the guide Stop valves to premises Schedule 2.4.10.3 Every supply and distributing pipe providing water to premises should be fitted with a stop valve to control the supply to those premises only. Stop valves at point of entry shall be screw down type complying with BS1010. Spot on |
|
|
|
Post by crowsfoot on Apr 29, 2021 7:14:03 GMT
Good Un' battle and it also ties up an earlier thread on the forum where I carried out some experiments on how screw down stop taps prevent mains back syphonage.
The water reg's aren't written in stone anymore Astra and they could well have been changed back and forth quite a few times over the last 20 years regarding this matter .
|
|
|
|
Post by DIYDafty on Apr 29, 2021 12:35:38 GMT
So a quarter turn valve couldn't be considered a "stop tap" even though it stops the water?
Certainly the water company installs a plastic 1/4 turn valve in the road as the house main external stop tap.
|
|
|
|
Post by rocketmanbkk on Apr 29, 2021 14:18:15 GMT
So a quarter turn valve couldn't be considered a "stop tap" even though it stops the water? Certainly the water company installs a plastic 1/4 turn valve in the road as the house main external stop tap. It’s more of an isolator |
|
|
|
Post by woodbine66 on Apr 29, 2021 15:18:10 GMT
BS1010 stop taps were specified because they used to have a loose jumper that the washer is attached to. If water flowed in the correct direction with the arrow on side of stoptap, the jumper would lift. If flow went in the wrong direction, the jumper would be pushed down onto the seat, stopping back flow.
Only trouble with loose jumpers is if the washer perishes and disappears, then you get customers wanting to know where the machine gun noise is coming from when they run a tap. It's the brass jumper banging up and down on the stoptap's seat.
|
|
Astra
Full Member
Posts: 219
|
Post by Astra on Apr 29, 2021 16:25:51 GMT
Hi there Battle many thanks for the info .........I must say that is what I thought but I also have to say that I have been into loads of houses where there has been room to fix a ball lever valve after the seized standard stop tap and no body blinks an eye so i don't where you really stand in that case as surely the old seized stop tap acts as a piece of pipe then to shut the water off just use the Quarter turn ball lever valve !!!!  |
|
|
|
Post by dickpuller on Apr 29, 2021 17:32:10 GMT
The BS1010 Stopcock is really outdated, but I’d think it’s still required by most Water Authorities in the UK.
You’d still have one in place, all be it that it’s not working, if you fit a lever valve above it.
I think I’d be looking at the Toby in the Street, to establish if it’ll shut the water off there. If it’s faulty or you can’t find it, phone your Water Authority & say it needs replaced.
|
|
|
|
Post by DIYDafty on Apr 29, 2021 19:50:14 GMT
The BS1010 Stopcock is really outdated, but I’d think it’s still required by most Water Authorities in the UK. You’d still have one in place, all be it that it’s not working, if you fit a lever valve above it. I think I’d be looking at the Toby in the Street, to establish if it’ll shut the water off there. If it’s faulty or you can’t find it, phone your Water Authority & say it needs replaced. How though can they mandate a stopcock when they themselves use a quarter turn valve in the street? |
|
|
|
Post by battle1066 on Apr 29, 2021 20:12:07 GMT
The BS1010 Stopcock is really outdated, but I’d think it’s still required by most Water Authorities in the UK. You’d still have one in place, all be it that it’s not working, if you fit a lever valve above it. I think I’d be looking at the Toby in the Street, to establish if it’ll shut the water off there. If it’s faulty or you can’t find it, phone your Water Authority & say it needs replaced. How though can they mandate a stopcock when they themselves use a quarter turn valve in the street? Simple cause they write the rules and we have to follow there rules. |
|
|
|
Post by pb on Apr 29, 2021 20:38:29 GMT
The modern 1/4 turn stop tap outside has a non return valve built in, that's why you see a lot of combi boiler installations they fit a hammer arrester because that non return valve causes sudden impact - bounce back
|
|
|
|
Post by dickpuller on Apr 29, 2021 21:12:02 GMT
The modern 1/4 turn stop tap outside has a non return valve built in, that's why you see a lot of combi boiler installations they fit a hammer arrester because that non return valve causes sudden impact - bounce back It’s not just that PB. There’s expanding Secondary HW when the Combi shuts off. With lots of combis having composite hydro blocks, the pressure build up is huge!!! Vokera have figures showing 80Bar!! Not 8 but 80!!! It’s no surprise plastic hydro blocks split & leak. |
|
|
|
Post by crowsfoot on Apr 30, 2021 6:39:22 GMT
The modern 1/4 turn stop tap outside has a non return valve built in, that's why you see a lot of combi boiler installations they fit a hammer arrester because that non return valve causes sudden impact - bounce back It’s not just that PB. There’s expanding Secondary HW when the Combi shuts off. With lots of combis having composite hydro blocks, the pressure build up is huge!!! Vokera have figures showing 80Bar!! Not 8 but 80!!! It’s no surprise plastic hydro blocks split & leak. You'd have to be brave to try this one...a water authority employee told me that if one of these modern outside stop taps is not working you can screw the whole stop tap out and a built non return valve will then shut the water off to the property!! DD/Astra. The water regulations are not retrospective, so if it was regulation approved at the time of fitting then it stays legal forevermore. |
|
|
|
Post by pb on Apr 30, 2021 18:43:07 GMT
It’s not just that PB. There’s expanding Secondary HW when the Combi shuts off. With lots of combis having composite hydro blocks, the pressure build up is huge!!! Vokera have figures showing 80Bar!! Not 8 but 80!!! It’s no surprise plastic hydro blocks split & leak. You'd have to be brave to try this one...a water authority employee told me that if one of these modern outside stop taps is not working you can screw the whole stop tap out and a built non return valve will then shut the water off to the property!! DD/Astra. The water regulations are not retrospective, so if it was regulation approved at the time of fitting then it stays legal forevermore. I don't doubt that Tappy. I know changing hi vents in commercial buildings they have the same principle, you un - screw the vent and it self seals the system and you can screw a new one in. |
|
