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Engineers, Builders & Contractors :: Commercial Building Plan Requirements

Grease Interceptors Requirements

Backflow “Premise Isolation” Requirements

Backflow Specifications

  • BF-A. Double Check Detector Assembly (6″-10″)- Buried
    pdf | dwg
  • BF-B. Double Check Detector Assembly (2-1/2″-12″) – Outdoor
    pdf | dwg
  • BF-C. Double Check Detector Assembly (2-1/2″-12″) – Indoor
    pdf | dwg
  • BF-D. Premise Isolation RPZ BPA 3/4” to 2″ – Indoor
    pdf | dwg
  • BF-E. Premise Isolation RPZ BPA  2 1/2″ to 12″ – Outdoor
    pdf | dwg
  • BF-F. Premise Isolation RPZ BPA  2 1/2″ to 12″ – Outdoor Small
    pdf | dwg
  • BF-G. Irrigation  3/4” to 2″ BPA
    pdf | dwg
  • BF-G. Premise Isolation  3/4” to 2″ BPA
    pdf | dwg
  • BF-H. Above ground BPA Site Placement – Property Line
    pdf | dwg
  • BF-I. Above ground BPA Site Placement – Building Line
    pdf dwg
  • BF-J. Fire Line BPA Site Placement – Property Line
    pdf | dwg
  • BF-K. Fire Line DCDA Detail (2-1/2″ to 12″) – Vertical Indoor
    pdf | dwg

Internal backflow is handled by Community Development and Planning. For questions about internal backflow call 817-459-6684.