DASASVF100 Sure Flow Auto Anti-Siphon Valve, 1-In.

The Rain Bird DASASVF100 Sure Flow Auto Anti-Siphon Valve is a professional-grade valve designed for above-ground irrigation system installation. This 1-inch female threaded valve replaces existing Rain Bird and compatible irrigation valves, integrating seamlessly with any 24 VAC irrigation timer. It solves critical water-management problems by preventing wasteful overflow and maintaining system integrity even when component failures occur.

The valve's unique reverse-flow design keeps the valve closed in the event of internal diaphragm failure, preventing flooding and protecting your landscape from water waste. Its adjustable flow control feature eliminates inefficient misting caused by excessive water pressure, allowing you to optimize each zone for uniform coverage and efficient watering rates.

Features and Benefits

• Reverse-Flow Safety Design: Prevents flooding if the diaphragm fails, keeping the valve closed to protect your property and conserve water.
• Adjustable Flow Control: Top-mounted, easy-turn control knob lets you optimize flow to each zone for more efficient watering and uniform coverage.
• Water Filter: Includes a water filter to keep the diaphragm clean.
• Easy Installation and Maintenance: 1-inch female-to-female threads connect directly to existing irrigation hardware; external bleed screw allows manual flushing of dirt and debris during setup and startup.
• Spray-Free Manual Operation: Internal bleed design provides manual control without misting, giving you convenient zone management.

Specifications

• Brand: Rain Bird
• Model: DASASVF100
• Size: 1 inch FNPT (female national pipe thread)
• Pressure Rating: 15 to 150 psi
• Flow Rate: 0.2 to 40 gpm
• Voltage: 24 V AC
• Body Material: Plastic
• Certifications: Meets I.A.P.M.O. and A.S.S.E. listing specifications; Canadian Standards Association approved

Installation Requirements

• Always install the valve at least 6 inches above the highest sprinkler head on the valve line.
• Never install another valve further down the line from this main valve.
• After installation and before system startup, manually flush the system of dirt and debris using the valve's external bleed screw.