Morrison Bros 2” Overfill Prevention Valve , w/2” Female Threads x 4” Female Threads, CARB EVR Approved

Standard Features

Shut-off level can be set to within 1¼″ from the top of the tank

Installs on a 4″ schedule 40 NPT male riser connection

Standard drop tubes (Morrison 419) are easily attached with included drop tube adaptor

Field adjustable float can be adjusted up to 5″ for precise shut-off level

Aviation model includes additional float section

Integral anti-siphon function

Full flow to shut-off point

Cushioned shut-off eliminates line shock

Integral pressure relief feature allows for safe uncoupling at the completion of the fill operation

Maximum viscosity of 300 Centistokes

Maximum operating pressure is 100 PSI

Optional Criteria

Minimum 5 PSI flow requirements

Typical flow rate is 175 GPM at 10 PSI pressure drop

A tight fill connection required. Top fill, remote fill, and dry disconnect connections available

*An optional manual test mechanism allows a technician to pull on the test line at any time during the filling process to actuate the float, stop the fill, and verify the valve is working properly.

Construction Details

• Adaptor: Passivated aluminum
• Body: Passivated aluminum
• Float: Nitrophyl M
• Plunger and dashpot: Anodized aluminum
• Upper tube: E-coated steel
• Shut-off mechanism: Stainless steel
• Shaft linkage hardware: Stainless steel

Code Compliance

NFPA 30, 30A; UFC; BOCA; SBCCI/SFC; PEI/RP 200, 600; CARB EVR Executive Order 402; Florida DEP EQ-900