sill cock


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sill cock

sill cock
An exterior water faucet, usually threaded to provide a connection for a hose; often located on the side of a building at the height of a sill.
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The plastic valves available are gate valves, universal line valves, straight supply valves, angle supply valves, washer hose valves, angle valves, sill cocks and ball valves.
A second cause is water trapped by an add-on anti-siphon device on the sill cock (photo above).
The best way to avoid this is to install a self-draining, frost-proof sill cock that has a built-in anti-siphon device.
Three-quarter inch (minimum) inside diameter supply pipes to each sill cock.
Either an approved vacuum breaker that permanently attaches to standard sill cocks (about $8; Photo 8) or a sill cock with the feature built in (about $11; Photo 4) to prevent siphoning.
A shutoffvalve, also called a "stop" valve (about $5), to serve each sill cock.
Then insert a dielectric fitting (Photo 5) and convert to copper pipe and fittings all the way back through to the sill cock.
Turn off the water at the main valve where your water service enters your house, drain the system, and remove the old sill cock and pipe (Photos 2 and 3).
Install pipes on a downward slope if they drain toward an open sill cock once they leave the heated space.
After replumbing the sill cock, turn the water on for at least two minutes to flush out impurities.
Uncouple your garden hose from the sill cock before winter.
If your house is built on a concrete slab, a frost-proof sill cock won't work in most cases.