I am about to do an estimate on connecting propane appliances to the gas supply line. The gas piping and shut off valves will already installed. The specifieing engineer told me a special "ground union" needs to installed between the appliance and the gas hose. I was also told the appliances need to be bonded to the gas piping.
I thought all unions were "ground unions" unless an o'ring was used to seal the joint. Am I right or wrong? And I did google "ground unions', but since I found the instructions for cleaning fire sprinkler heads, I tend not to believe everything I find on-line. Unless it is bad things about politicians, I believe all bad things about politicians.
The gas supply hoses will meet ANSI Z21.69. I did not find any specs or mention of bonding gas hoses or appliances, at least in my 2010 copy of the Oregon Mechanical Specialty Code C411.
I thought all unions were "ground unions" unless an o'ring was used to seal the joint. Am I right or wrong? And I did google "ground unions', but since I found the instructions for cleaning fire sprinkler heads, I tend not to believe everything I find on-line. Unless it is bad things about politicians, I believe all bad things about politicians.
The gas supply hoses will meet ANSI Z21.69. I did not find any specs or mention of bonding gas hoses or appliances, at least in my 2010 copy of the Oregon Mechanical Specialty Code C411.