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FIG 910

Anti-Siphon Valve

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.

Product Features

Standard Features

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 FKM disc
  • Thermal expansion valve: Stainless steel with FKM seal


Certifications & Listings

cULus Listed

Product Ordering Instructions

Figure Suffix Size Description Weight (lbs)
910 1000 AV 1.5” Anti-Siphon Valve, 0-5 feet w.c. 6.46
910 1100 AV 1.5” Anti-Siphon Valve, 5-10 feet w.c. 6.46
910 1200 AV 1.5” Anti-Siphon Valve, 10-15 feet w.c. 6.46
910 1300 AV 1.5” Anti-Siphon Valve, 15-20 feet w.c. 6.46
910 2000 AV 2” Anti-Siphon Valve, 0-5 feet w.c. 5.42
910 2100 AV 2” Anti-Siphon Valve, 5-10 feet w.c. 5.42
910 2200 AV 2” Anti-Siphon Valve, 10-15 feet w.c. 5.42
910 2300 AV 2” Anti-Siphon Valve, 15-20 feet w.c. 5.42
910B 1000 AV 1.5” Anti-Siphon Valve, 0-5 feet w.c., BSP threads 6.46
910B 1100 AV 1.5” Anti-Siphon Valve, 5-10 feet w.c., BSP threads 6.46
910B 1200 AV 1.5” Anti-Siphon Valve, 10-15 feet w.c., BSP threads 6.46
910B 1300 AV 1.5” Anti-Siphon Valve, 15-20 feet w.c., BSP threads 6.46
910B 2000 AV 2” Anti-Siphon Valve, 0-5 feet w.c., BSP threads 5.42
910B 2100 AV 2” Anti-Siphon Valve, 5-10 feet w.c., BSP threads 5.42
910B 2200 AV 2” Anti-Siphon Valve, 10-15 feet w.c., BSP threads 5.42
910B 2300 AV 2” Anti-Siphon Valve, 15-20 feet w.c., BSP threads 5.42