Can someone explain the purpose of the screw in the body?

On Saturday, 27 April 2019 19:11:23 UTC+1, DerbyBorn wrote:
Can someone explain the purpose of the screw in the body?

Probably so the parts can be assembled.

Can someone explain the purpose of the screw in the body?

From
https://www.stevensonplumbing.co.uk/...eck-valve.html
The screw in the middle of the valve is a test point for monitoring
correct operation of the check valve.

How you are supposed to do that exactly I have no idea.


--
Graham.

%Profound_observation%

On 27/04/2019 19:11, DerbyBorn wrote:

Can someone explain the purpose of the screw in the body?

Usually to allow the valve itself to be drained - handy when used in
locations where you might shut off the supply periodically and can
expect freezing. (say a feed to a garden tap)


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On 27/04/2019 19:11, DerbyBorn wrote:
Can someone explain the purpose of the screw in the body?

test point for verifying is working correctly as a *double* check valve



--
Robin
reply-to address is (intended to be) valid