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DIY Forum >> Plumbing Questions >> Low tech question ! https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1081541262 Message started by Slug on Apr 9th, 2004, 9:07pm |
Title: Low tech question ! Post by Slug on Apr 9th, 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 ? |
Title: Re: Low tech question ! Post by thescruff on Apr 9th, 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 |
Title: Re: Low tech question ! Post by Slug on Apr 9th, 2004, 11:31pm Short and to the point. Excellent. Thank you thescruff. |
Title: Re: Low tech question ! Post by thescruff on Apr 9th, 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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