push button stopcock

[ban-all-sheds]

Now this one I have searched for, but to no avail.

What's the proper name for those push-button operated stopcocks, and are they any good?

 

[kevplumb]

try sure stop

 

[ChrisR]

http://www.bes.ltd.uk/products/graphics/15419.gif
?

 

[ban-all-sheds]

Yup - that's it.

And this is how they work: http://www.surestop.co.uk/IMAGES/Information2.pdf

Pretty neat, but I'm not sure I like the thought of a 12% drop in water pressure....

 

[ChrisR]

I bet your mains pressure varies by a lot more than that. Do you notice?

 

[ban-all-sheds]

Only when it drops to zero....

A permanent loss of 12% seems a lot though...

 

[croydoncorgi]

Can't see how there'd ALWAYS be a 12 percent drop.

If the valve creates a constriction, the drop will get worse as flow increases....

Also, this looks like a gadget which needs a SECOND working stopvalve upstream in case you ever need to change / fix it. Remember that your Good 'Ole Water Company probably no longer guarantees to provide a working SV in the street!

 

[silverback]

The surestop switch is used as a secondary stopvalve, it is not intended to replace the incoming stopcock, the normal stopcock must still be fitted and the surestop switch is fitted after this stopcock

 

[ChrisR]

Water regs demand a Screw-down stopcock first in the property.

 

[silverback]

Thats what I said