check valve question

Jack_15

check valve presure rating is 150wsp and 600wog.
What does wsp & wog stand for?
Thanks,
Jack

Jerry Boulanger_2

They stand for

working static pressure and water/oil/gas. The WOG rating must be interpreted from a chart based on the working temperature. A 600 WOG valve will only be good for a maximum pressure of 600 psig up to about 135 F. As the temperature increases, the pressure decreases.

Jack_15

Thank You,nm

Tony Conner

Actually...

... the WSP stands for (depending upon the source), "working steam pressure" or "wet (as opposed to superheated) steam pressure". Either way, a 150 WSP rating will correspond to a steam temperature of 366*F, and a 125 WSP to 353*F.

The WOG (water-oil-gas) rating is usually based on 100*F, and is always higher than the WSP rating.

Jerry Boulanger_2

I stand corrected - another example

of how important it is to put your mind in gear before you release the clutch on your mouth (or your keyboard!)

Tony Conner

I've...

... paid particular attention to piping for a lot of years. At least once a week, I learn new something new about it.