475STDAV

The Zurn Wilkins 475STDAV Stainless Steel n-Pattern Reduced Pressure Principle Vertical Assembly (RPDAV) withstands the corrosive effects of water and allows for installation in systems when inlet and outlet flows up.  Ideal for new or direct drop-in replacement delivering convenience without compromise. For fire protection applications, with a metered by-pass to detect leaks and other water use.

Product Resources

BIM / 3D Models / 2D Drawings

Related Documents

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Features And Benefits

  • Only approved means of installing Reduced Principle Pressure Backflow Preventer in a vertical configuration
  • Superior stainless steel body to resist corrosion and extend the product life
  • Smaller footprint for direct drop-in replacement
  • Time-tested check and relief valve components ensure easy maintenance and more water system uptime
  • Patented compound checks provide ultra-low pressure drop as documented by approval authorities, reducing the need for a booster pump
  • Available in sizes 4"-10"
  • OS&Y Gate Valves (Standard)
  • Butterfly Valves (Optional)
  • Metered by-pass to detect leaks and other water use and can be situated on either side of product for ease of installation
Proportion 65
Lead Free
Retrofit or Replacement
Zurn Wilkins
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Repair Parts

Relief Valve Hose Kit, 6" and 10" used with RK6-RV475ST-HOSE. Kit Contains Sensing Tube, Elbow, and Nipple.

400STR to Standard Conversion Kit, 6" used with RK6-475ST-RVELBOW. Kit Contains O-Ring, Relief Valve, Relief Valve Elbow, O-Ring, Relief Valve Elbow, and Sensing Tube.

Standard to 400STR Conversion Kit, 6" used with RK6-475STR-RVELBOW. Kit Contains O-Ring, Relief Valve, Relief Valve Elbow, O-Ring, Relief Valve Elbow, Sensing Tube, Grooved Coupling, Body, and Spool.

Bypass Assembly 475STDAR used with RK6-475STDAR-BP-LM.

Bypass Assembly 475STDA used with RK6-475STDA-BP-LM.

#2 Check Assembly Repair Kit, 6" 475ST used with RK6-450STDACK2. Kit Contains Seat Retainer, O-Ring, Seat, Bolt, Poppet Retainer (x4), Handle, Poppet Assembly, Washer (x4), O-Ring, Retainer (x4), Poppet Retainer, Seal Ring, and Seat Assembly.

Complete Rubber Repair Kit, 6" 375ADA used with RK6-375DAC. Kit Contains O-Ring, Seat (x2), O-Ring, Poppet Bolt (x8), and Seal Ring (x2).

Main & Bypass Rubber Repair Kit 6" 350DA used with RK6-350DA. Kit Contains O-Ring, Check (x2), O-Ring, Poppet Bolt (x8), Seal Ring (x2), and Bypass Rubber Repair Kit.

Relief Valve Hose Kit, 4" and 8" used with RK4-RV475ST-HOSE. Kit Contains Sensing Tube, Elbow, and Nipple.

400STR to Standard Conversion Kit, 4" used with RK4-475ST-RVELBOW. Kit Contains O-Ring, Relief Valve, Relief Valve Elbow, O-Ring, Relief Valve Elbow, and Sensing Tube.

Standard to 400STR Conversion Kit, 4" used with RK4-475STR-RVELBOW. Kit Contains O-Ring, Relief Valve,Relief Valve Elbow, O-Ring, Relief Valve Elbow, Sensing Tube, Grooved Coupling, Body, and Spool.

Bypass Assembly 475STDA used with RK4-475STDA-BP-LM.

#2 Check Assembly Repair Kit, 4" 475STDA and 475STDAV used with RK4-450STDACK2. Kit Contains Seat Retainer, O-Ring, Seat, Bolt, Poppet Retainer, Handle, Poppet Assembly (x4), Washer, O-Ring, Retainer (x4), Poppet Retainer, Seal Ring Seat Assembly, and #2 Poppet.

Relief Valve Assembly Repair Kit, 8" and 10" 375DA used with RK8-RV-ASSY. Kit contains O-O-Ring, Relief Valve, Relief Valve Assembly, Bolt, Relief Valve (x2), and Sensing Tube Fitting.

400STR to Standard Conversion Kit, 8" used with RK8-475ST-RVELBOW. Kit Contains O-Ring, Relief Valve, Relief Valve Elbow, 475STDA, O-Ring, Relief Valve Elbow, and Sensing Tube (x2).

Relief Valve Elbow, 475ST to 475STR Conv. Kit, 8" 475STDAR and 475STDARelief Valve used with RK8-475STR-RVELBOW. Kit Contains O-Ring, Relief Valve, Relief Valve Elbow, 475STDAR, O-Ring, Relief Valve Elbow, Sensing Tube (x2)

Bypass Assembly 475STDAR used with RK8-475STDAR-BP-LM.

Bypass Assembly 475STDA used with RK8-475STDA-BP-LM.

#1 Check Assembly Repair Kit, 8" and 10" 475ST used with RK8-475STCK1. Kit Contains O-Ring, Seat, Bolt, Poppet Retainer (x6), Handle, Poppet Assembly, Washer (x6), O-Ring, Retainer (x6), Poppet Retainer, Seal Ring, Seat Assembly, #1 Poppet, Washer, Seat Retainer (x4), Nut, and Seat Retainer (x4).

#2 Check Assembly Repair Kit, 8" and 10" 475ST used with RK8-450STDACK2. Kit Contains O-Ring, Seat, Bolt, Poppet Retainer (x6), Handle, Poppet Assembly, Washer (x6), O-Ring, Retainer (x6), Poppet Retainer, Seal Ring, Seat Assembly, #2 Poppet, Washer, Seat Retainer, Nut, and Seat Retainer.

Complete Rubber Repair Kit, 8" and 10" 375ADA used with RK8-375DAC. Kit Contains O-Ring, Seat (x2), O-Ring, Poppet Bolt (x12), Seal Ring (x2), Bypass Rubber Repair Kit, and Relief Valve Rubber Repair Kit.

Main & Bypass Rubber Repair Kit 8" - 12" 350DA used with RK8-350DA. Kit Contains O-Ring, Check (x2), O-Ring, Poppet Bolt (x12), Seal Ring (x2), and Bypass Rubber Repair Kit.

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