Plumbing term

I googled the letters **WOG **as a term and did not find there meaning in the first 4 pages of my search. Anyone game on

Water Oil Gas

Types of applications a particular pipe can accomodate. Water, Oil, Gas. Usually proceeded by a number (for psi rating).

Crap I thought it would last longer than one post:( ya guys are just sharper than the last time I posted that question:D

Just wondering how many HI’s check gas valves to see if the WOG is stamped on the body of the valve. Remember its the little things:D