what is this screw for?

[artie guber]

have posted a picture of a brass connector that screws to the top of my pump (there is an identical one at the bottom)

there is a slotted screw in it as you can see - what does this do? Is it an air vent screw, or does it turn and stop the flow like a valve?

there is a little bit of calcium (?) around the screw so dont want to panic that i have a small leak



thanks in advance

 

[stani]

It is an isolating valve, leave it alone until it is needed for changing the pump.

 

[Destroyer2813]

It is an isolating valve, leave it alone until it is needed for changing the pump.

And then find it doesn't work

 

[Reg Man]

and almost certainty that it will leak anyway, as soon as you touch it.

 

[stani]

And then find it doesn't work

exactly.

 

[heliotrope]

As stani says.

It's an isolating valve, turn it at your peril.

It will leak forever once touched. (They even leak if you look at them sometimes:cuss🙂

 

[stani]

As stani says.

It's an isolating valve, turn it at your peril.

It will leak forever once touched. (They even leak if you look at them sometimes:cuss🙂

In fact it's probably started weeping now because we are looking.

 

[artie guber]

then i shall do exactly as you all say..........and leave the bugger alone

thanks

 

[stevetheplumber]

probably the most pointless plumbing fitting ever made

 

[furryneddy]

probably the most pointless plumbing fitting ever made

Now you've really upset it - get the bucket out quick !

 

[PETE 123]

Ive fitted new ones and they have leaked

 

[village idiot]

Ive fitted new ones and they have leaked

Do not fit them. I also fail to understand why anyone still fits gate valves. I hate them with a passion

 

[Reg Man]

These pump valve's are a waste of space. I cant work out why they are used or manufactured. They have been about for years and are a constant pain for everyone. Always use gate valve type with spindle.

 

[stevetheplumber]

village theres nothing wrong with gate valves go in any boiler house youll see dozens of them all working fine some thirty plus years old . The problem is cheap gate valves fit proper peglers or conex and they will out last all the 2 quid levers most of which will be leaking in 5 years

 

[village idiot]

village theres nothing wrong with gate valves go in any boiler house youll see dozens of them all working fine some thirty plus years old . The problem is cheap gate valves fit proper peglers or conex and they will out last all the 2 quid levers most of which will be leaking in 5 years

Not doubting that. But I have come across many situations where ''DIYers'' or summat go and change a bath etc. Drain down the CWSC or turn off gate valves then once they have fitted the taps etc, find that there's no water to the bath, basin or toilet. Or hot tap works but cold does not. They get paid, pack their tools and leave, failing to recognise that the ball in the gate valve has dropped and will not lift back up to the open position.

I always change them to lever valves to be on the safe side.