Code for gas pipe fittings

[Meanmetz]

New york, Long Island. What is code for gas pipe fittings. I am told close nipples,bushings,street L's are not to code. NY plumbing codes does not seem to state this. I can understand these fittings can be weaker and stree L's restrictive. I always see street L's used by National Grid at meters. Just Like to put this question to rest

 

[John Gayewski]

New york, Long Island. What is code for gas pipe fittings. I am told close nipples,bushings,street L's are not to code. NY plumbing codes does not seem to state this. I can understand these fittings can be weaker and stree L's restrictive. I always see street L's used by National Grid at meters. Just Like to put this question to rest

Not sure about this especially when it comes to NYC particulars, but the are some fittings that aren't allowed to be used when it comes to cast iron. The "bushings aren't allowed" myth I think comes from the fact that you can't use cast iron bushings because they can split easily.

Street 90's can be hard to grip and torque properly and close nipples can't really be gripped once installed. Those fittings are normally avoided but not illegal. But NYC could have rules against them. I've heard sediment traps are illegal in some cities because people take them apart and steal gas through them, which has lead to some deaths.