Will someone please explain the different ocassion when one would fit a stopcock versus a gate valve in a domestic cold water system. As both do the same job, it would be interesting to know exactly why. billandhiscat.
I can't reconcile these two statements Crystal. Are you saying that the flow of water tends to push the jumper towards the closed position, or that the reverse flow of water tends to push the jumper towards the closed position? I don't see how both can be true.Crystal said:The stopcock .... seals by a washer being compressed on to a valve seat...
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A stopcock is required for isolation of the water supply at entry to the property because the jumper (the part holding the washer) is free to move along the valve spindle and theoretically will close automatically to prevent reverse flow into the water supply (although not all seem to have this facility these days).
Will someone please explain the different ocassion when one would fit a stopcock versus a gate valve in a domestic cold water system. As both do the same job, it would be interesting to know exactly why. billandhiscat.
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