Casva valve

[Dave Walker]

Doing a install at the moment and we have a casva valve that has been supplied with the kit. There are 3 of us on the job totalling over 50 years experience and we don't have a clue what it is for or were to fitt it in the system. We have 2 risers 1st is mains feeding 6 flats and the second is boated feeding the other 12. So I thought it would be a good idea to ask the knowledge base that is pluming forum.

 

[Plumbstar Tom]

an air vent for boosted systems

I have very little knowledge though, goes at the top of the riser

 

[Dave Walker]

Thanks Tom So does it just connect it to the top of riser and that's it or does it need to go to atmospher as there is a thread on both sides of valve?

 

[ShaunCorbs]

have you got a pic as well never seen one as well

 

[Dave Walker]

Not the best picture but this is it

 

[Chalked]

The outlet should be piped to outside in case it passes an amount of water during venting, or if it fails.

 

[Dave Walker]

Ok thanks chalked