Morrison Bros. 922 Combination Vent/Overfill Alarm

E85 & Bio-Diesel compatible

For use on aboveground storage tanks. The 922 alerts you when your tank is near full while also allowing your tank to breathe during filling and dispensing operations. This 2" full port pressure/ vacuum vent is equipped with a high intensity, audible alarm (alarm will register 120+ Db. when measured at a distance of 1 ft. with a fill rate of 90 GPM) which can be set by adjusting the cable length to float height. It is fully mechanical, with no wires or batteries needed. The minimum fill rate is 20 GPM.

NOTE: Not for use on vapor recovery systems.

Warning: All emergency vents, fill connections, tank openings and piping connections must be airtight. Alarm/vent airway must be free of any obstruction such as dirt or ice when filling or unloading tank. Emergency vent should be set higher than 10 oz/in².

Catalog page 129