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Apr 19
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, 2024, 12:24pm
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They didn't know it was impossible, so they did it - Mark Twain
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(Moderator: thescruff) - (Moderator Group: Board Moderator)
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Low tech question ! (Read 3829 times)
Slug
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Low tech question !
Apr 9
th
, 2004, 9:07pm
I gotta say i find the, what I call 'high tech' questions about c/h systems and alike fascinating even if at times the info flies over my head ! My questions are going to be considerably lower tech but I need to understand the basics before I get into the hunkier stuff !
My first dim question is ..
What IS the difference between service, isolation and check valves ? The Screwfix catalogue lists all three and they all look the same to me in that there is a ball assembly screw thing to stop water flow. Is there a difference in the diameter of the insides allowing less or more flow ?
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thescruff
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Re: Low tech question !
Reply #1 -
Apr 9
th
, 2004, 11:03pm
A service valve is the cheap things that go on each appliance to enable washer changing etc with draining down.
Isolation valve is the gate valve on the cold feed to a cylinder, the main stopcock or any valve that turns the whole supply off.
Check valves are non return valve to protect the mains supply etc.
scruff
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Re: Low tech question !
Reply #2 -
Apr 9
th
, 2004, 11:31pm
Short and to the point. Excellent. Thank you thescruff.
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thescruff
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Re: Low tech question !
Reply #3 -
Apr 9
th
, 2004, 11:41pm
No probs slug, theres a lot that could be added to it, for example; full flow lever ball valves are ideal for isolating sections of heating systems, etc without restricting the flow rates.
scruff
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