MORRISON BROS. Morrison Bros. FMMASO Series Overfill Extended Body Warning Valve FMMASO-91EX AV

The ASO series of valves is used to shut off the air supply to an AOD pump when the liquid level approaches full capacity. The ATO valve is used to turn on the air supply to an AOD pump when the liquid level approaches the full capacity. Features Installs directly into a 2” female threaded tank top opening Accepts 1/4” air lines When the ASO valve closes, the air supply is diverted to an audible whistle on the 91S and 91EXS models Operating temperature range is -10ºF to 185ºF Model ASO-91 and 91S shut off height is 7 inches from the tank top Model ASO-91EX and 91EXS shut off height is 17?” inches from the tank top Air flow capacity is 20 CFM @ 100 PSI Maximum air pressure is 150 PSI The valve will automatically reset as liquid is removed and the air pressure to the valve is turned off Construction Details Valve body and collar: Anodized aluminum Float: Polypropylene Float rod and valve spool: Brass O-ring seals: Viton® Hardware: Stainless and plated steel Certifications ULC Listed Florida DEP EQ 576 Patent 5007450 - Valve with optional alarm for use on used oil evacuation systems which use an air operated pump Downloads FMMASO-91S Installation & Maintenance Instructions (PDF Download) FMMASO-91 Installation & Maintenance Instructions (PDF Download) FMMASO-91EXS Installation & Maintenance Instructions (PDF Download) FMMASO-91EX Installation & Maintenance Instructions (PDF Download) FMMASO-91 Installation & Maintenance Instructions (PDF Download)