If installing an outside tap. And fitting a internal double check valve. Do I need to do anything with the little nut on the check valve? I think it's for draining down the check valve if needed
Double check valve
- Thread starter tomsim
- Start date
Sponsored Links
- Joined
- 8 May 2017
- Messages
- 9,667
- Reaction score
- 2,450
- Country
No ,don't touch it.
The one with the little nut/screw is called a verifiable check valve, the little nut is a test point used to confirm that the double check valve is working correctly. As suggested, not to be played with.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
