- Installs directly into a 2″ female threaded tank top opening
- Accepts ¼″ 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 -10°F to 185°F
- Air flow capacity is 20 CFM @ 100 PSI. Maximum air pressure is 100 PSI
- Valve automatically resets as liquid is removed and the air pressure to the valve is turned off
- FMMASO-91 and 91S shut-off height is 6½″ from the tank top
- FMMASO-91EX and 91EXS shut-off height is 17⅜″ from the tank top
Construction Details
- Valve body and collar: Anodized aluminum
- Float: Polypropylene
- Float rod and valve spool: Brass
- O-ring seals: FKM
- Hardware: Stainless and plated steel
Code Compliance
- 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
