Brand: Allstar Performance Manufacturer's Part Number: ALL40201 Part Type: Overflow Tank Components Product Line: Allstar Performance Overflow Check Valves Automotive Fittings Part Number: AAF-ALL40201 UPC: 848238020618 Overflow Tank Component Type: Check valve Fittings Included: No Inlet Attachment: Weld-on Overflow Tank Inlet Size: 1.250 in. Bushings Included: No Quantity: Sold individually. Notes: Check valve is 9.750 in. long and has a 1.250 in. gravity style flapper valve. Description: Allstar Performance overflow check valves are designed for use with overflow catch cans--and they close automatically during rollover to keep fuel in the cell. These aluminum components are available in two styles: as a gravity flapper valve or spring-loaded flapper valve. They're also offered with different inlet diameters. Order the model that's compatible with your recovery tank setup.