Double Check Valve
- Thread starter WillyWarbux
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Fit a shock arrestor. The name says it all. Plus double check valve . Really! Are you metered supply. Anyone want to argue regards double check on a supply crack on. Would like to know why though. Bidet or similar being fitted?
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Not a metered supply, and no extra plumbing being done. Literally just replacing an old stop cock from the 1920's with new one in a slightly different location. Someone mentioned double check valve might be because the old house shares a stop valve out on the road with multiple houses? Here's a link where you can hear it, in all its glory:
Kind of sounds like Mongolian throat singing if you ask me.
In 2017 the regs were amended due to more and more non approved/downright dangerous appliances being connected to the water mains. In essence the regs now state that any appliance connected to the mains should have some type of backflow prevention incorporated, whether part of the appliance or separate via an air gap, check valve, etc.
Sometimes it is not practical nor workable to install double check valves everywhere and a lot of appliances either don't like them, don't need them or already have backflow protection built in so a call should be made by the professional.
Under the regs it requires that when there's 2 or more premises sharing a common supply/distribution pipe from the mains then backflow protection should be fitted at the share point, e.g at the mains stop tap.
Of course, it all comes down to whether someone wants to follow the regs or not and I don't think everyone is going to die if they aren't followed but TBH we in the UK, especially here up north, have got some of the best water in the world for a reason and personally I'd like to keep it that way.
There is a real issue with a certain demographic up here in Glasgow, with the use of Ablution Douche devices, connected to the mains. There was a breakout of a Staph infection in a block of tenements flats in the south side. 8 properties were all using the same rising main and the infection was traced to the top flat. When they entered they found a douche sitting in a filthy toilet, when the bottom flat had plumbing work performed the system was drained. That drew contaminated water out of that toilet via the faulty douche into the mains and into the flats below, a number of people ended up quite ill with some nasty rashes.
, of course that's a rare and extreme case.
Sometimes it is not practical nor workable to install double check valves everywhere and a lot of appliances either don't like them, don't need them or already have backflow protection built in so a call should be made by the professional.
Under the regs it requires that when there's 2 or more premises sharing a common supply/distribution pipe from the mains then backflow protection should be fitted at the share point, e.g at the mains stop tap.
Of course, it all comes down to whether someone wants to follow the regs or not and I don't think everyone is going to die if they aren't followed but TBH we in the UK, especially here up north, have got some of the best water in the world for a reason and personally I'd like to keep it that way.
There is a real issue with a certain demographic up here in Glasgow, with the use of Ablution Douche devices, connected to the mains. There was a breakout of a Staph infection in a block of tenements flats in the south side. 8 properties were all using the same rising main and the infection was traced to the top flat. When they entered they found a douche sitting in a filthy toilet, when the bottom flat had plumbing work performed the system was drained. That drew contaminated water out of that toilet via the faulty douche into the mains and into the flats below, a number of people ended up quite ill with some nasty rashes.
, of course that's a rare and extreme case.Sponsored Links
Do you Google alot.?In 2017 the regs were amended due to more and more non approved/downright dangerous appliances being connected to the water mains. In essence the regs now state that any appliance connected to the mains should have some type of backflow prevention incorporated, whether part of the appliance or separate via an air gap, check valve, etc.
Sometimes it is not practical nor workable to install double check valves everywhere and a lot of appliances either don't like them, don't need them or already have backflow protection built in so a call should be made by the professional.
Under the regs it requires that when there's 2 or more premises sharing a common supply/distribution pipe from the mains then backflow protection should be fitted at the share point, e.g at the mains stop tap.
Of course, it all comes down to whether someone wants to follow the regs or not and I don't think everyone is going to die if they aren't followed but TBH we in the UK, especially here up north, have got some of the best water in the world for a reason and personally I'd like to keep it that way.
There is a real issue with a certain demographic up here in Glasgow, with the use of Ablution Douche devices, connected to the mains. There was a breakout of a Staph infection in a block of tenements flats in the south side. 8 properties were all using the same rising main and the infection was traced to the top flat. When they entered they found a douche sitting in a filthy toilet, when the bottom flat had plumbing work performed the system was drained. That drew contaminated water out of that toilet via the faulty douche into the mains and into the flats below, a number of people ended up quite ill with some nasty rashes.
Really?? Google, nah, don't use it .... prefer Yahoo
No, I'm just a professional who likes to keep up to date with my water regs and bylaws info and keeps an eye on the industry stuff, like most pro's would thanks. The staph story came from a water board lad that I know well and it's called industry networking ..... just in case you weren't aware of the concept.
If you’re a professional tell me what type air gaps are required etc and why . Without googling. Just upgraded my water for free regs via the college I worked at. Funnily enough every trade I knew at that college never mentioned industry networking.
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Nothing wrong with looking up info. It isn't a memory test.
I’ll remember that when I’m doing a gas tightness test. How to do it. . Or will I ? Just in case I’ll Google it
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No need for that. the gas side of things is easy peasy. Not sure why you'd need to know things like tap/air gaps off the top of your head.
You’re no different to the students I looked after , fooking clueless. Keyboard warrior at its best like most on here
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Calm down, I only said that sometimes it is ok to look stuff up. You can't possibly remember every detail for everything.
Why, don't you know? Need someone else to tell you? Told you, I don't use google, never have. In short though air gaps are a form of backflow protection, which type would be suitable would normally be designated by whatever water category it needs to protect against and where.
Where do you think you are, this website and its forums are a perfect example of a building services networking space, if your a member of the CC then there's a professional industry networking space right there. There's a huge mine of professional knowledge in there that must span hundreds if not thousands of years. Also if you have your C&G quals or were a lecturer then you should know that there is a mandatory level 3 module about career and business awareness, a critical part of that is industry networking.
Do you even know what a keyboard warrior is? Go and google that, read your comments, decide who that description better relates to and then look at the reflection in your screen.
Anyway .... I think the best thing would be for you to get back in your box and leave the forum to the better mannered pro's on here to offer their advice without elitist abuse or idiotic rhetoric.
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