475STDA

Reduced Pressure Detector Assembly

475STDA

Reduced Pressure Detector Assembly

The Zurn Wilkins 475STDA Stainless Steel n-Pattern Reduced Pressure Detector Assembly (RPDA) withstands the corrosive effects of water and is 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.

BIM Where To Buy
  • 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
  • Can utilize the new backflow setter which eliminates the need for concrete thrust blocks, allowing for easier installation and lower cost
  • Available as a 475STDAV for RP protection in a vertical upward flow path
  • Available in sizes 4"-10"
  • OS&Y Gate Valves (Standard)
  • Butterfly Valves (Optional)
  • Metered by-pass to detect leaks and other water use
RK6-RV475ST-HOSE

Relief Valve Hose Kit, 6" and 10" used with RK6-RV475ST-HOSE. Kit Contains Sensing Tube, Elbow, and Nipple.
RK6-475ST-RVELBOW

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.
RK6-475STR-RVELBOW

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.
RK6-475STDAR-BP-LM

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

Bypass Assembly 475STDA used with RK6-475STDA-BP-LM.
RK6-450STDACK2

#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.
RK6-375DAC

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).
RK6-350DA

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.
RK4-RV475ST-HOSE

Relief Valve Hose Kit, 4" and 8" used with RK4-RV475ST-HOSE. Kit Contains Sensing Tube, Elbow, and Nipple.
RK4-475ST-RVELBOW

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.
RK4-475STR-RVELBOW

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.
RK4-475STDA-BP-LM

Bypass Assembly 475STDA used with RK4-475STDA-BP-LM.
RK4-450STDACK2

#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.
RK8-RV-ASSY

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.
RK8-475ST-RVELBOW

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).
RK8-475STR-RVELBOW

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)
RK8-475STDAR-BP-LM

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

Bypass Assembly 475STDA used with RK8-475STDA-BP-LM.
RK8-475STCK1

#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).
RK8-450STDACK2

#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.
RK8-375DAC

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.
RK8-350DA

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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