24VAC Anti-siphon Valve

DIG's 24VAC, 3/4” and 1” universal, heavy-duty plastic anti-siphon valves with a solenoid are for above-ground installation and for use with all AC controllers in residential or commercial irrigation. Designed for reliable operation, the anti-siphon valves feature a flow control handle for flow adjustment and manual shutoff, internal manual opening via the solenoid and external bleed via the bleed screw for smooth opening and closing.


  • Anti-siphon valve combines a remote control valve and backflow preventer in one unit
  • Constructed of a UV-resistant, glass-reinforced nylon bonnet with a stainless steel spring and non-corrosive materials
  • High flow with low pressure loss
  • Operates in a wide range of flow rates
  • Normally closed
  • Flow control handle for water flow adjustment and manual shutoff
  • External or internal manual bleed allows quick and easy valve opening and closing
  • Excellent leak-free performance utilizing self-cleaning EPDM diaphragm and seal design assembly
  • Encapsulated EPDM seal washer built into the atmospheric backflow assembly
  • Manual or automatic operation
  • Encapsulated solenoid plunger for quick and easy service and maintenance
  • Flow-control adjustment, can be used to reduce sprinkler over-spray
  • Smooth valve opening and closing prevents pressure surge hazards


how to specify
Model Description
For use with AC controllers only
33-AC-ASV-075 3/4 in. ASV with 24 VAC solenoid
33-AC-ASV-100 1 in. ASV with 24 VAC solenoid


  • Body Styles: Anti-siphon valve with 24VAC solenoid
  • Operating pressure: 20 to 150 PSI
  • Valve size: 3/4" and 1" with FNPT inlet and outlet
    • Flow rate 3/4”: .25 to 20 GPM
    • Flow rate 1”: .25 to 25 GPM
  • I.A.P.M.O, UPC and ANSI compliance:
  • Solenoid: 24VAC (50 -60 cycles)
    • Current: .032A (7.7 VA)
    • Holding Current: 0.16A (3.84 VA)
    • Power Consumption: 1.7/2.2 watts
  • Temperature range: up to 150 Fahrenheit (0-65 C)
  • Material:
    • Body: rigid PVC
    • Bonnet: glass reinforced nylon
    • Solenoid: glass reinforced nylon
    • Spring and pins: Stainless steel
  • Center line distance: 3.750” (952 mm)

Note: Install the anti-siphon valve a minimum of 8” above ground or above the highest sprinkler head

Corporate Information

Where To Buy
Contact Us

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DIG Corporation
1210 Activity Drive
Vista, CA 92081 USA

Tel: (760) 727-0914
Fax: (760) 727-0282
Toll Free: (800) 322-9146

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