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Morrison Bros 9095SS 2” Overfill Prevention Valve


The 9095SS overfill prevention valve is designed to prevent overfilling storage tanks by providing a positive shut-off during a pressurized fill. The valve installs on a 2″ riser pipe at the fill port of a storage tank. The valve terminates the fill when the product reaches the preset level.

Features and Details

  • The 9095SS has proven compatibility, durability and reliability through cycle testing in actual DEF transfer systems
  • The valve has completed cycle testing and compatibility testing
  • The valve materials meet the required specifications of ISO 22241-3 for handling DEF
  • The wetted materials are Stainless Steel Alloys 304 and 316, Teflon and Polypropylene
  • The valve design allows for a full flow fill until it closes. The dashpot design ensures a reduction of line shock at shut-off
  • Designed for product not requiring a drop tube. Will not work with a drop tube
  • A field adjustable float allows the installer to set the desired shut-off level. The vertical float allows for installation in openings close in proximity to the tank walls
  • For ease of installation, the valve shut-off length is field adjustable from 2 to 76 inches depending on the model
  • Contains a 2” female threaded connection to the tank
  • Integral anti-siphon function
  • A pressurized tight fill connection is required for operation

Product Warnings and Cautions

  • The valve flow rate is 164GPM at 10PSI pressure drop (see flow curve)
  • 5 PSI is the minimum flow requirement for valve operation
  • The valve is compatible with fluids that have a density greater than 0.717 grams per ML/6.00 lbs per  gallon and a maximum viscosity of 150 centistokes
  • The valve must be used with clean product. Contamination from products such as used oil may cause  the valve to function improperly. Line strainers or filters should be used in the fill piping or delivery vehicle to insure clean product
  • Consult Morrison Bros. Co. for product compatibility

Materials of Construction

  • Adaptor… Stainless steel (Part A or Part F)
  • Body… Stainless steel
  • Float… Polypropylene
  • Plunger and dashpot… Stainless steel
  • Float tube and float guard…Stainless steel
  • Shut-off mechanism… Stainless steel
Weight 6 lbs
Dimensions 28 × 6 × 6 in
Top Connection

F Male Threaded, A Female Threaded, No Top Connection

Valve Shut-off Length

2” to 16”, 2” to 28”, 2” to 76”

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