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

[Ric2013]

Pegler Yorkshire -

Pegler Yorkshire Tee Ball Valve 15mm Blue | Ball Valves | NoLinkingToThis

G2.8 in the WRAS guide to the regs says 'spherical type valves may also be used in all sizes'
R2.8 in the WRAS guide to the regs says '[o]ther types of stopvalves and servicing valves may be used provided they conform to an appropriate British or European standard, or the Regulations, and are suitable for the purpose.'.

This is full bore, rated at PN16, and WRAS approved.

I think it's suitable. Would you agree?

 

[ShaunCorbs]

No use a normal 15-22mm mains brass stop tap

 

[Ric2013]

Thanks. Your reasoning though?

 

[ShaunCorbs]

Thanks. Your reasoning though?

Stop tap has been used for decades with no problems other than normal wear and tear

 

[Masood]

Stop tap has been used for decades with no problems other than normal wear and tear

The same could be said of so many things but materials, design and manufacturing processes improve all the time.

I see no reason for not using that valve although I prefer the lever type as they are a bit easier to operate.

 

[joni os]

For the extra £1 go for one with a lever. The valve may not be operated for many years but when needed the reassurance of a lever will be worthwhile, especially for someone with weak grip or arthritis .

 

[Neil K]

I was taught in my apprenticeship not to use lever valves on cold water mains as they could/can cause water hammer

 

[Masood]

I was taught in my apprenticeship not to use lever valves on cold water mains as they could/can cause water hammer

It's true they do about rapidly and can cause hammer but they're not in daily use so I don't think it's a big deal really. The reliability and ease of use more than makes up for it IMO.

 

[rocketmanbkk]

Should it not be full bore to use as a stop tap? Any regs to say yea or nae?

 

[Old Account]

Thanks. Your reasoning though?

The reason I wouldn't install such a valve would be water hammer ... If you have a normal brass one you literally hit the water off in a soft and gentle way without ... It's just my opinion had to change few of them as a result of leakage , stuck, etc...

But just my opinion

 

[Old Account]

I was taught in my apprenticeship not to use lever valves on cold water mains as they could/can cause water hammer

Sorry just related you didn't see you mentioned it

 

[gassafe]

I thought the stop taps had that that anti back flow type washer or something... I would much prefer a nice lever valve on th incoming supply! We all get the stop Taps that are too tight or still pass water...

 

[NRS]

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

 

[joni os]

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.

 

[Best]

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.

 

[Ric2013]

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!!