Apollo - 4A-205-A2F - 1'' RPZ Backflow Preventer

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SKU 4A-205-A2F

1 Non-Lead Free, Standard Y-strainer w/ Ball Valves & SAE Threaded Test Cocks (Standard 1/2)

The Apollo® Model RP4A/RPLF4A Series Reduced Pressure Backflow Preventers provide maximum protection against back-siphonage or backpressure from substances that are hazardous to the potable water supply. The top accessed modular check valve cartridges provide captured springs, replaceable seats and reversible silicone seat discs. This Made in America assembly features ball valves with stainless steel handles and trim as standard and carries the five-year Apollo® factory warranty.


  • Maximum Protection Against Back-Pressure/Back-Siphonage
  • Modular Check Valve Cartridges w/ Easily Replaced Parts
  • Reversible/Removable Chloramine-Resistant Silicone Seat Discs
  • Low Head Pressure Loss
  • Top Mounted Test Cocks
  • Threaded Testcock Protectors
  • Internal Sensing Passage
  • Modular Captured Spring Relief Valve
  • Lead Free Option
  • Standard with Full Port Ball Valves with Stainless Steel Handles
  • Corrosion Resistant
  • 5 Year Warranty


  • ASSE 1013-2011
  • CSA B64.4
  • NSF/ANSI 61 Water Quality (RPLF4A Only)
  • NSF/ANSI 372 Lead Free (RPLF4A Only)
  • Federal Public Law 111-380
  • AWWA C511
  • Approved by the Foundation for CrossConnection Control and Hydraulic Research at the University of Southern California
  • Horizontal Installation Approvals on 1/2� - 2�


  • BODY, CAPS - Bronze (C84400/LF C89836)
  • BV SHUT-OFFS, TESTCOCKS - Bronze (C84400/LF C87800)
  • SPRINGS - 300 Series SS
  • SEAT DISCS - Chloramine-Resistant Silicone
  • DIAPHRAGM - Nitrile and Nylon
  • CHECK MODULES - Glass-Filled PPO
  • O-RINGS - Chloramine-Resistant EPDM
  • BALL VALVE HANDLES - Stainless Steel


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