1998 Vapor Vent
The 4” 1998 Sequential Vapor Valve by Civacon offers superior performance and superior safety. The high capacity design provides a superior flow for faster loading and unloading. The 1998 features an innovative sealing system features double u-cups and Teflon inverted seals for a longer maintenance-free life. Minimum operating pressure: 60 PSI, units begin to sequence at 50 PSI and begin to exhaust at 40 PSI.