Originally Posted by zip
All chambers have the OPVs.
Aren't they supposed to release at 7-9, but recommended is around 3-3.5?
I guess I should have specified that it depends on the intent of the manufacturer. I have never worked on any Wing products before, so I do not know their engineering thoughts.
With the F470, the OPVs begin releasing air at approximately 3-4 psi since they are part of the rapid-fill system.
With your boat, they might be there for the even of a collision causing an overpressure situation, in which case, they may be dialed in at 7 to 9 psi like you stated. However, they make also be set up to operate with a rapid fill system?
Either way, if you are running the Leafield A6 OPV, then there is a colored dot on the inside plastic piece. The color will tell you what the pop pressure SHOULD be. : A6 Pressure Relief Valve for life rafts, RIBs and river rafts
If it is a different manufacturer, then I am not sure.