wikiHow - How to Replace Shut off Valves - Shut-off Valves & Supply Lines

wikiHow - How to Replace Shut off Valves

Replacing shut off valves is easy whether it be liquid or gas. You must first obtain the valve you need that is a replica of the one you are replacing in regards to the size, thread, and type. The purpose of a supply valve is to isolate the item after the valve from the rest of the system. Since the valve is there to isolate a item, the entire supply will have to be temporarily shut off. In the case of water, you may need to drain some water out first so you don't have a lot come out when you remove the valve. If it is a gas valve, most everything will be the same except as noted. You should be able to see the entire valve. If this valve is at the end of a line, then there is a metal or flexible supply line connecting the faucet to the valve.

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