450ST

The Zurn Wilkins 450ST Stainless Steel n-Pattern Double Check Assembly (DC) withstands the corrosive effects of water and is ideal for new or direct drop-in replacement delivering convenience without compromise.

Product Resources

BIM / 3D Models / 2D Drawings

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Features And Benefits

  • 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 maintenace 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 in sizes 4"-10"
  • NRS Gate Valve Shut-offs (Standard)
  • OS&Y Gate Valves and Butterfly Valves (Optional)
Lead Free
Retrofit or Replacement
Zurn Wilkins
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Repair Parts

#1 Check Assembly Repair Kit, 6" 450STDA used with RK6-450STCK4. Kit Contains Seat Retainer, O-Ring, Seat, Bolt, Poppet Retainer (x4), Handle, Poppet Assembly, Washer (x4), O-Ring, Retainer (x4), Poppet Retainer, Seal Ring, Seat Assembly, and #2 Poppet.

#1 and #2 Check Assembly Kit, 4" used with RK4-450STCK4. 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.

#1 Check Assembly Repair Kit, 8" and 10" 450STDA used with RK8-450STCK1. 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 (x4), Nut,  and Seat Retainer.

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