Vent stacks in home plumbing systems work the same way. How Does a DWV System Work? The centerpiece of a DWV system is the ...

Vent stacks in a household plumbing system work the same way. Advertisement The centerpiece of a DWV system is the main stack , usually a pipe 3 or 4 inches in diameter that runs straight up ...

Vent Stack. The vent stack in any building is the main vent pipe connecting the sewer to the roof. It’s that two- to ...

This is why in very cold climates, the main vent stack is often full-sized and a 4-inch-diameter pipe. The larger pipe size means that much more frost must form to choke off the air supply.

I’ve been a master plumber since 1981. I’ve always loved doing plumbing because it’s a very interesting three-dimensional challenge to install drain, waste and vent (DWV) piping in a new ...