Fill Cap loose-seal vented style cap with hinged cover.
Fits 2” NPT (F) tank openings and may be locked with a padlock for security. Construction is cast iron with a black lacquer finish.
The Pre-Vent Fill Cap is designed for use on small above ground gasoline, diesel and oil storage tanks. The primary purpose of this cap is to pressurize the storage tank and reduce evaporation loss and condensation.
The pressure cap valve opens at 2½ PSI and the vacuum release opens at 1½ ounces. Threads are 2” NPTM.