What was you on about -compression joints not allowed on gas?--as I said,what about the thousands of restrictor elbows on gas fire feeds-are they not compression?...what about the gas connections on most combis--are they not compression?....what about gas lever shut off valves and fancock valves for gas-do they not come in compression?-now who wants to go back to gas school you pr*t-get yer facts right instead of winding everyone up. 
