Non return valve to mains supply

[lattin]

Hi Guys. I will be fitting an outside tap in my house. Teeing off under sink and direct to outside. Should i install a non return valve on mains ?

 

[ShaunCorbs]

Yes need to fit a double check to the outside tap

 

[Knappers]

You can buy tap with check valve built-in

 

[ShaunCorbs]

You can buy tap with check valve built-in

not for new installations

 

[Knappers]

Really? Why not?

 

[ShaunCorbs]

Really? Why not?

they freeze and break in winter so there only allowed on existing installs where you can retro fit a dcv

 

[Knappers]

Your right (but you knew that)

 

[Chuck]

While you're at it, give the new tap its own isolator and a drain valve for the section.

 

[Knappers]

Think I'll just start feeding hose through the wall 🤔

 

[WC1]

Classy ! 😀