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Fig FMMASO Overfill Prevention Valve For Used Oil Systems

Brand: Morrison Bros. Co.

The ASO series of valves is used to shut-off the air supply to an AOD (Air-Operated Diaphragm) 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 -10° 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 6-1/2″ from the tank top
  • FMMASO-91EX and 91EXS shut-off height is 17-3/8″ from the tank top

1 - 6 of 6 Part Numbers
FMMASO-91 AV
FMMASO-91 AV
Fig FMMASO Air Shut-Off Valve, w/o audible signal
FMMASO-91EX AV
FMMASO-91EX AV
Fig FMMASO Air Shut-Off Valve, w/o audible signal, extended shut-off height body
FMMASO-91EXS AV
FMMASO-91EXS AV
Fig FMMASO Air Shut-Off Valve, w/ audible signal, extended shut-off height body
FMMASO-91S AV
FMMASO-91S AV
Fig FMMASO Air Shut-Off Valve, w/ audible signal
FMMASOB-91S AV
FMMASOB-91S AV
Fig FMMASO Air Shut-Off Valve, w/o audible signal, BSP Threads
FMMATO-91 AV
FMMATO-91 AV
Fig FMMASO Air Actuation Valve, w/ High Level, w/o audible signal
1 - 6 of 6 Part Numbers

Specifications

Valve Body & Collar

  • Anodized Aluminum

Material of Construction

  • Float: Polypropylene
  • Float Rod & Valve Spool: Brass
  • O-ring Seals: FKM
  • Hardware: Stainless & Plated Steel

Wetted Material

  • Stainless Steel Alloys 304 and 316, Teflon and Polypropylene

Viscosity

  • Max 300 centistokes

Flow Rate

  • 164 GPM @ 10 psi

Maximum Pressure

  • 100 psi

Opening Pressure

  • Min. 5 psi

Size

  • 2"

Certifications & Approvals

  • ULC Listed
  • Florida DEP EQ 576

  • AOD (AirOperated Diaphragm) Pump
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