Overfill Prevention Valves

Prevents overfills and fuel spillage when fueling underground tanks, which reduces the risk of fire, contamination, and costly clean-up. Only Universal has one moving part to eliminate any line shock. This valve is designed to shut off gradually when the fuel reaches a pre-determined level, preventing line shock during gravity drops. When there’s no line shock, there’s no stress put on the system.

• Faster Deliveries with Less Restriction
• Only One Moving Part
• Easily Retro-Fitted in Existing Tanks
• Completely Automatic Operation
• Easy Field Installation Without Breaking Ground
• Enables Manual Gauging of Tank
• No Minimum Flow Rate Required for Shut Off

• Cast Aluminum Body
• Stainless Steel Shaft
• Aluminum Internal Components
• Reinforced Closed Cell Float
• Spring Steel Pre-Trip Mechanism
• Thrust Bearing
• Teflon Washer

For all AST/UST storage applications. The best overfill protection available today. No line shock and gradual shut-off to eliminate any stress on the system.  UL Approved for both pressure and gravity fill.

• No Line Shock, Gradual Shut-Off Design
• No Stress on System
• No need to specify remote or direct fill.
• Prevents Overfills in Above-Ground Tanks, Reducing Contamination and Costly Clean-Up
• Compatible with fuel blends up to E85, Diesel Blends of up to B20 and B100
• Can be pressure or gravity filled. Ideal for AST’s that are below grade level.

• Anodized aluminum
• Nickel plated steel
• FKM seals

The 47-20 fits 2″ tank openings. With no minimum flow rate this valve can be used for a wide variety of applications. Only Universal Valve offers a 2″ overfill valve designed to operate with no minimum flow rate. Making this the most versatile overfill on the market. For Installation Certification info please e-mail

• No Minimum Flow Rate to Operate
• No Line Shock, Gradual Shut-Off
• No Float Hang Up
• Prevents Overfills in Tanks Reducing Contamination and Costly Clean-Up
• Completely Automatic Operations
• Easily Retrofitted to Existing Tanks
• 2″ NPT Tank Opening

• Hard Coated Aluminum
• Reinforced Closed Cell Float
• Buna Gaskets

2” overfill valve. Designed to fit your 4″ UST opening. With no minimum flow rate, this valve can be used for a wide variety of applications. Approved for Waste Oil Tanks. For Installation Certification info please e-mail

• No Minimum Flow Rate to Operate
• No Line Shock, Gradual Shut-Off
• No Float Hang Up
• Prevents Overfills in Tanks Reducing Contamination and Costly Clean-Up
• Completely Automatic Operations
• Easily Retrofitted to Existing Tanks

• Hard Coated Aluminum
• Reinforced Closed Cell Float
• Buna Gaskets