Morrison Brothers 910-2100 1V 2" Anti-Syphon Valve

Morrison Brothers 910-2100 1V 2" Anti-Syphon Valve


FIG 910
Anti-siphon valves are used to help prevent the accidental siphoning of a product from a tank in the event of a leak downstream below the liquid level.
Note: The all new 910 series replaces the previous 910ER series.



  • Normally closed
  • Compatible in suction or pressure systems
  • Unique spring design allows for optimum opening pressure
  • High flow at optimum pumping pressures
  • Four elevation ratings available
  • Tamper-proof cap to ensure accurate elevation ratings
  • 90 degree configuration for easy piping from tank top to grade level
  • Integrated thermal expansion relief
  • This valve can be installed in both horizontal and vertical piping

Construction Details

  • Body: Ductile iron (e-coated)
  • Cap: Stainless steel
  • Spring: Stainless steel
  • Plunger: Stainless steel with Viton® disc
  • Thermal expansion valve: Stainless steel with Viton® seal

New Product Announcement: FIG 910
FIG 910 Specification Sheet
FIG 910 Installation Instructions

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Additional information

Weight7.4 lbs
Dimensions3.1-2 × 4 × 6 in
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