Rising Main Valves

[dale.cooper]

Hi all,

Could anybody tell me what the regulations are with respect to using a 22mm Ball valve as the primary cut off for my rising main?

I have seen snippets implying only a 'Stop Cock' should be used, but have found nothing official looking.

Ta,

Dale

 

[masona]

When the Water Company replaced my old leaking lead stopcock,they put in a 22mm ballvalve,so I can't see any problem if you do.

 

[ChrisR]

....except that the water regulations state that it should be a screw-down valve! It should also be followed by a double check valve and drain cock.

 

[masona]

I'm right saying the water meter got 1/4 turn ballvalve and should it not be screw down type from there?

 

[ChrisR]

I'm not saying that you aren't right, just that the Water Authority Oiks didn't comply with the Water Regs. Nothing remarkable there. Quarter turn valves have a lot less flow resistance than traditional stop cocks.

 

[dale.cooper]

Thanks guys,

I figured that a 'StopCock' would be the final word.

With regards to the drain cock and double, I did once see mention of this but lost the web page. As for the order of fitting I am guessing;

From the StopCock into the Rising main the order is Double Check then Drain off. I was going to use a 22mm reducing T to 15mm and use a small Drain Cock. I guess the idea being that the entire system can be drained easily.

I'm off to continue making the route for the MDPE... Hiii-Hooooo

 

[ChrisR]

S'right. You'll be the only one for miles around with it done "properly"! If you spend the extra couple of quid (careful where you go to buy) on a 22mm double check valve you'' reduce the flow restriction it gives. Not an issue if your pressure is say 3 bar +.