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Plumbing is the foundation of every good irrigation system. The main tie-in, if not done right, can carry the potential for disaster.  Flooded basements, washed out foundations, and huge water bills can result if the work is sub-par.  Backflow Prevention is critical in protecting your family and neighbors from possible contamination.  Every County has specific guidelines as to the approved Backflow prevention devises and how they are to be installed. 

You may be required to have your Backflow tested annually. If so, we have a Virginia State certified and licensed Backflow Technician on staff. To schedule a Backflow Inspection call the number below, or use the form. We will call you back within 24hrs to schedule your appointment.

                                          

                                           Backflow Tutorial

 

Backflow Preventer Requirements by County

Arlington
  • Pressure Vacuum Breaker (PVB) – ASSE 1020; this assembly must be able to be located outside, one (1) foot above the highest sprinkler head
  • When the parameters for a PVB cannot be met, a Reduced Pressure-Principle (RP) - ASSE 1013 shall be installed
Loudoun
  • An RPZ device on lines that are connected with chemicals. (Preferred)
  • A PVB device on wet systems must be 1’ (foot) above highest head.  (This is key)
Fairfax         
  • An RPZ device on lines that are connected with chemicals. (Preferred)
  • A PVB device on wet systems must be 1’ (foot) above highest head.  (This is key)

Prince William

  • ASSE 1020 P.V.B. or CSA B64.1.2 pressure-type vacuum breaker
  • ASSE 1013 R.P.Z., AWWA. C511, CSA. B64.4 or C.S.A. B64.4.1 reduced pressure principle backflow preventer

A DUAL CHECK VALVE IS NEVER AN APPROVED BACKFLOW WHEN INSTALLING AN IRRIGATION SYSTEM ON A POTABLE WATER SYSTEM!!

     
 PVB  RPZ  Dual Check