W.O.G. concept

[juancito]

I was unable to find out from which code or norm is the definition W.O.G. (WATER.OIL.GAS) comming from.
Does anyone know any source or web site to get that information?
I´m trying to find some equivalence between for example W.O.G.1500 and the corresponding pressure rating OF ANSI B16.34

Thanks in advance

 

[RXH]

There is no relationship between the WOG rating and the ASME B16.34 rating, as far as I know. WOG is the old style of pressure rating which simply provides the maximum pressure that the valve is capable of holding at (undefined) ambient conditions. "200 WOG" simply means "200 psi" and is the maximum pressure that the valve will seal against. In contrast, ASME B16.34 provides a comprehensive pressure - temperature rating by means of "Class".