Been to a house that has a gate valve as a stop tap. So won't turn off mains pressure. After this there is a service valve so will likely be relieing on this. Do these ever leak from the slotted section when turned off just worried as there is no proper stop tap.
Gate valve as stop tap
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They leak if you so much as look at it in anger let alone turn the fecker.
gate valve should be able to turn it off, if not use that to slow the flow and replace the iso valve with a proper stop tap.
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Newboy
yes
Because they're cheapskate 'tards.
Decent lever valves or nothing. Not worth the hassle frankly.
The best ones are the cheap JG plastic ones that distinctlysay not rated for high temperatures on the packet and the valve body; yet team Bosnia and DIY numpties like putting them on their hair brained aheating extensions
Decent lever valves or nothing. Not worth the hassle frankly.
The best ones are the cheap JG plastic ones that distinctlysay not rated for high temperatures on the packet and the valve body; yet team Bosnia and DIY numpties like putting them on their hair brained aheating extensions
All valves should be exercised every month!
Gate valves are designed to control flow in low pressure systems and not at 3 bar mains pressure.
But I have found that new ones will usually totally close a 1.5 bar heating system off.
If you repeatedly rotate the gate valve say 180 degrees around the close position they will usually close slightly further on every turn and probably eventually totally close the flow.
A full bore lever valve is my choice for mains water. Although the traditional stopcock with a washer is the design which will withstand about 10 bar.
Tony
Gate valves are designed to control flow in low pressure systems and not at 3 bar mains pressure.
But I have found that new ones will usually totally close a 1.5 bar heating system off.
If you repeatedly rotate the gate valve say 180 degrees around the close position they will usually close slightly further on every turn and probably eventually totally close the flow.
A full bore lever valve is my choice for mains water. Although the traditional stopcock with a washer is the design which will withstand about 10 bar.
Tony
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Come on Tony stop it FFS.
I isolated a 54mm gate valve earlier this week......cold down service circa 4.5 bar pressure...no problem whatsoever.....maybe tell Crane/Hattersley that their gate valves arn't suitable for pressures in excess of 1.5bar.....
Tony..... Seriously.... .
I exercise my valve daily.
Still drips though.
Jeff
Still drips though.
Jeff
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That explains the spare room in the sock.....to catch the drips.
Wow and I use to test them to 10 bar, on building sites as standard
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