ground
It's connected to the incoming cold water supply pipe.
Hot water pipe rust first as compared to the cold water pipe for the same chemical composition of the water.
Cold water pipe.
If you are referring to a regular building, the cold water feed pipe goes directly to all cold faucets, toilets and hot water tank. The purpose seems obvious.
Electrical grounded to the cold water pipe, usually before the first fitting once it is through the foundation..
Vent, return circulation
Because the cold makes them slightly more brittle and the water in them freezes and in doing so it expands (needing more room) and this makes the pipes bulge and crack. You discover the problem as the ice melts!
Vent piping is a pipe that runs outside and is connected to the drain line of your home. this helps the water in the drain to move to your septic/sewer.
If you are referring to a regular building, the cold water feed pipe goes directly to all cold faucets, toilets and hot water tank. The purpose seems obvious.
Cold water pipes would be the sweaty ones.
Light Green for COLD Water and Dark Green for HOT water
water regulation require that cold water supply pipe from the cwsc to tap outlets and the hot water storage vessel be isolated, with what