Description
The V421-0020 0" x 2" Vent Valve Assembly when used in conjunction with the Universal #37 Float Vent Valve, protects against overfill of the UST (Underground Storage Tank). This item comes standrad with a single, 2 inch NPT side vent.
NOTE: Universal Float Vent Valve Assemblies should only be used in submerged pumping systems, not suction pump systems. It should only be used on gravity drop systems. Do not use where pump off unloading or coax fills are used.