ECN Forum Forums General Topics of the Trade General Discussion Area Natural Gas thru Copper Pipe

In the 2000 edition of UPC, 1210.1 changed to allow Types K, L, and ACR copper. The gas must contain less than 0.3 grains of hydrogen sulfide per ft³ (1210.1.1). The joints must be brazed, flared or screwed (1211.2). So the joints can not be sweated with typical plumbing solder and the code requires the brazer to be certified. Also, there are requirements for labeling, supporting and protecting the copper.