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  1. Double Check Valve Assembly (DCVA) - Sprinkler School

  2. Apollo Valve Model DC4A - 4A-100 Series - Double Check

  3. Febco 905-449 Stainless Steel Ball Valve Handle for 1/2" - 3/4" Valves

  4. Double Check Valve Assemblies - Watts

  5. 719 - Watts

  6. Amazon.com: Double Handle Valve

  7. Febco 905-450 Stainless Steel Ball Valve Handle for 1" - 1 1/4" Valves

  8. Double Checks with rust resistant handles. | Lawn Care Forum

  9. Double check valve Valves & Valve Repair - Lowe's

  10. 950XLT2 | Backflow prevention device - Zurn