Mixing Galvanized steel and black iron in a gas line

[JPGarcia]

I have to make an extension to an interior galvanized gas line. The company does not allow to use any new galvanized steel, but it requires to use epoxi covered black iron. What should I put betwen the two pipe types? Is it Ok to put just a bronze valve? What is the standard procedure? Thank you.

[paul52446m]

I have to make an extension to an interior galvanized gas line. The company does not allow to use any new galvanized steel, but it requires to use epoxi covered black iron. What should I put betwen the two pipe types? Is it Ok to put just a bronze valve? What is the standard procedure? Thank you.

If you want a valve there, you can use a brass gas cock. It takes a long time , but over the years the gas will flake off the galvanizing, so that why they don;t
want you to use it. Any valve you use for gas will say G on the valve. After you get it together and gas in the line check it with soap and water, or you can buy
some gas leak detector. later paul

[JPGarcia]

If you want a valve there, you can use a brass gas cock. It takes a long time , but over the years the gas will flake off the galvanizing, so that why they don;t
want you to use it. Any valve you use for gas will say G on the valve. After you get it together and gas in the line check it with soap and water, or you can buy
some gas leak detector. later paul

Thank you Paul, but if I don't want a valve there what should I do?

[paul52446m]

Thank you Paul, but if I don't want a valve there what should I do?

just put a black coupling or nipple on it and go on running your blk pipe. later paul

[JPGarcia]

just put a black coupling or nipple on it and go on running your blk pipe. later paul

Thanks, Paul. I'd thought doing that, but then I heard about galvanic corrosion. Do you know why is not a problem in this case, or if it is, how to solve it?

[paul52446m]

Thanks, Paul. I'd thought doing that, but then I heard about galvanic corrosion. Do you know why is not a problem in this case, or if it is, how to solve it?

In water lines you can get electric galvanic corrosion, from the movement of
water. with gas you don't get enough to worry about. later paul

[JPGarcia]

In water lines you can get electric galvanic corrosion, from the movement of
water. with gas you don't get enough to worry about. later paul

Thank you Paul for your useful help. federico