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350ASTDA Double Check Detector Backflow Preventer

Water backflow preventer 350ASTDA has double check detector assembly with stainless steel body, grooved gate valve connections with flanged end OS&Y gate valves. The backflow regulator provides reliable performance and improved flow characteristics from patented compound check, allowing for installation in lower-pressure systems.

Product Resources

Spec Sheets & Install

BIM / 3D Models / 2D Drawings

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Popular Models

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4-350ASTDA

The 350ASTDA Double Check Detector Backflow Preventer features a stainless Steel body, making it ideal for fire protection applications. Its metered bypass detects leaks and unauthorized water use. Used in low health hazard applications.

To view all options, see the Specification Sheet - Model 350ASTDA

6-350ASTDA

The 350ASTDA Double Check Detector Backflow Preventer features a stainless Steel body, making it ideal for fire protection applications. Its metered bypass detects leaks and unauthorized water use. Used in low health hazard applications.

To view all options, see the Specification Sheet - Model 350ASTDA

8-350ASTDA

The 350ASTDA Double Check Detector Backflow Preventer features a stainless Steel body, making it ideal for fire protection applications. Its metered bypass detects leaks and unauthorized water use. Used in low health hazard applications.

To view all options, see the Specification Sheet - Model 350ASTDA

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Features And Benefits

  • Short lay-length for small space installation
  • Reliable performance and improved flow characteristics from patented Compound Check, allowing for installation in lower-pressure systems
  • Available as 350ASTDAR for backflow replacements/retrofit
  • Lower maintenance costs from corrosion resistance of stainless body
  • Multiple shut-off and end connections available for installation versatility
  • Available in flanged, grooved, or grooved X flanged end connections for installation versatility
Lead Free
Zurn Wilkins

Backflow Attributes

  • Grooved for steel pipe, flanged
  • Stainless steel
  • 2-1/2", 3", 4", 6", 8", 10"
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