Cast-iron base with Pre-Vent cap.

Today's emphasis on conservation and the environment has increased the demand for Cim-Tek's first product. The Pre-Vent is a fill cap with a pressure and vacuum release that reduces evaporation in fuel storage tanks and helps maintain the quality of stored fuel.

• Special locking arm provides extra security
• Vented fill cap for standard 2” NPT threaded hole
• For use on small aboveground, commercial gasoline and distillate, fuel transfer, and small oil storage tanks
• Pressure cap valve opens at 2.5 lbs. To reduce pressure; while the vacuum release opens at 1.5 ounces when tank cools
• Zinc chromate coating on cap protects from oxidation