Gas Pipe Union In Attic

Blue stuff might be megaloc teflon thread sealant.

Gas pipe union in attic. The branch line terminates in a drop line which is a vertical pipe dropping down to the appliance from an overhead branch line. It was run in an unprofessional manner in that it runs up from the basement and then along a door threshold and finally through a wall. Subscribe to this old house. Older houses often have threaded steel gas pipe.

The regulation also mandates that steel and wrought iron pipe be marked with labels reading gas and astm d 2513 the code prohibits the use of cast iron pipes in residential gas piping installations. Make connections to steel gas pipe. That said it s always good to check with your local inspector to ensure there aren t any local issues with it. We will discuss some of the basics of inspecting gas piping.

I have just purchased a house where the gas line for the dryer is copper. Or rather is it legal to use unions to connect gas pipe. If your old appliance is connected with a steel gas pipe and you re installing a new appliance buy a gas appliance connecting kit and replace the steel gas pipe with the flexible gas supply lines stainless steel tube. Ask this old house plumbing and heating expert richard trethewey explains how gas piping is installed in a home.

You can use a union in the attic if you can still get to it when you are done without tearing anything apart that might be in the way. I was replacing some gas pipe and the guy at the plumbing wholesaler asked if i wanted to do the connection with a union or a. Supply branch and drop lines or risers. And yes the flex pipes are generally acceptable for the final appliance connection.

And all the usual warnings go along with gas piping to be sure to test well afterward. Yes unions are generally acceptable to join pipes backwards. Branch lines run to individual appliances. Companion flanges are code approved when dealing with two points of piping where you cannot gain access to the opposite end of piping.

Ask your own home improvement question customer reply replied 10 years ago. Any union in a gas line must have a valve in front of it. Can you use unions to connect gas pipe. Some say yeah but hide them some say no way some say sure i 39 ve done it for years.

The piping inside the house is called the gas supply line or building line.