Gas Pipe Union In Attic

Branch lines run to individual appliances.

Gas pipe union in attic.

Older houses often have threaded steel gas pipe. Some say yeah but hide them some say no way some say sure i 39 ve done it for years. And yes the flex pipes are generally acceptable for the final appliance connection. Can you use unions to connect gas pipe.

Make connections to 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. The branch line terminates in a drop line which is a vertical pipe dropping down to the appliance from an overhead branch line. Subscribe to this old house.

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. The irc s chapter 24 provisions also mandates standards for steel and wrought iron pipe. 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. Or rather is it legal to use unions to connect gas pipe.

Supply branch and drop lines or risers. Blue stuff might be megaloc teflon thread sealant. 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. And all the usual warnings go along with gas piping to be sure to test well afterward.

Any union in a gas line must have a valve in front of it. Companion flanges are code approved when dealing with two points of piping where you cannot gain access to the opposite end of piping. Ask this old house plumbing and heating expert richard trethewey explains how gas piping is installed in a home. Are there any rules or safety concerns about running a new gas through the wall into the attic and then dropping it down through the wall.

That said it s always good to check with your local inspector to ensure there aren t any local issues with it. The piping inside the house is called the gas supply line or building line. The laundry room is built on a slab. I have just purchased a house where the gas line for the dryer is copper.

We will discuss some of the basics of inspecting gas piping.