Flexible gas piping OK for exterior?

[Mark A. Timpani, CMI]

What about gas piping that has yellow casing on it? What is it called and is it ok for exterior. (not buried)

[Michael R. Boyett]

That is CSST.

[Brian E. Kelly]

Originally Posted by mtimpani

What about gas piping that has yellow casing on it? What is it called and is it ok for exterior. (not buried)

It needs to be at least protected from physical damage Mark.

[Scott Schultz]

also with this tubing, as you know as well brian, that tape or plumbers putty shouldn't be used on the flare connector. It's done commonly and should be watched for when inspecting the water heater and furnace.

[Mark A. Timpani, CMI]

This stuff....

[Michael Larson]

Source

5.14 Outdoors

When installed outdoors, CSST shall be protected from mechanical damage. A conduit or chase is required for installations in exposed unprotected areas within 6 feet of grade. Conduit shall be supported with proper size pipe hooks, pipe straps, bands, or hangers.

Protective coating must remain intact outdoors. Mechanical joints and associated exposed metal tubing shall be wrapped or protected by shrink sleeves. Appropriate measures must be taken to shield CSST from corrosive environments such as exposure to acid or chloride based cleaning solutions for brick or masonry.
Where passing through an outside wall, CSST shall be protected. CSST must be sleeved where passing though

[Mark A. Timpani, CMI]

Thank you