Vent to Atmosphere P/V/R valves. These valves provide pressure and vacuum relief. A safe internal working pressure to prevent the routine expulsion of waste gas into the atmosphere will be maintained. Sizes 2″, 3″, 4″, 6″, 8″, 10″ and 12″ available.
A. For Pressure settings below 1,5 PSI the minimum possible vacuum setting allowance is 0,5 ounces/sq.in
B. Pressure settings above 1,5 PSI to 3 PSI the minimum possible vacuum settings allowable is 1,16 ounces/sq.in
C. Pressure settings above 3 PSI use either our spring loaded or counter weight valves (Available on inquiry)
Standard in Aluminum, Stainless Steel, Carbon Steel and other materials available on request.