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Plumbing & Plumbers Forum - Would you agree this valve is suitable for use as a stopcock?
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Would you agree this valve is suitable for use as a stopcock?

Discuss Would you agree this valve is suitable for use as a stopcock? at UK Plumbers Forums; They don't comply with the regs; no back flow prevention built in like a stopcock which has a loose jumper for said reason...
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    Default Re: Would you agree this valve is suitable for use as a stopcock?

    They don't comply with the regs; no back flow prevention built in like a stopcock which has a loose jumper for said reason

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    Default Re: Would you agree this valve is suitable for use as a stopcock?

    Would not want to rely on stop tap as backflow prevention device. Most loose jumpers, after years of remaining in open position become difficult to rotate and highly unlikely to remain loose enough to fulfil an anti-backflow function.
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    Default Re: Would you agree this valve is suitable for use as a stopcock?

    On this forum the same subject was posted and it was said that stopcock had to be fitted for regulations. Probably because it is anti back flow.
    Although I prefer lever valves for everything, stopcocks are better in one point, - they can't be knocked on accidently, unlike a lever valve. I wouldn't want to turn a lever valve off and rely on the customer or any children not knocking it on and flooding where I am working at. I do remove the lever temporary for safety though.
    Best solution is a stopcock on mains pipe with a lever valve directly above it for ease of use.
    Last edited by Best; 02-02-2016 at 09:20 PM.
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    Default Re: Would you agree this valve is suitable for use as a stopcock?

    Just seen this thread has been resurrected.

    To answer two points:

    1. Water Regulations now prohibit a loose jumper in a stopcock. I know it used to be the opposite, and the C&G book of lies has yet to catch up.

    2. I'm not sure if full bore is specified, but I'd argue that if the valve weren't full bore it would not be suitable for use as a stopcock. My valve was full bore though - my feeling was that it would, therefore, be less restrictive than a BS1010 stopcock.

    I take the point about water hammer - and the accidental opening being easier!!
    Last edited by Ric2013; 09-02-2016 at 11:30 PM.
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