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Zurn Wilkins  |  SKU: RK6-375CK1

Wilkins RK6-375CK1 | 6" Check Assembly Repair Kit for 375A/475DA/475DAV

Regular price $ 726.99

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For time-sensitive orders, please contact us directly so we can provide a more accurate lead time estimate based on your specific requirements.

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Special Case Shipping Rates

 

Please note that shipping rates are subject to change at any time.  We reserve the right to charge an additional fee in addition to the regularly advertised shipping fee for shipping to remote areas not easily accessible by typical freight carrier means (i.e. islands only accessible by ferry). If your order falls into this category, you will be notified upon receipt of your order, and have the option to complete the purchase with additional fee or to cancel the order.  Please note, these instances are very rare, as most locations are reachable by regular freight. If you have any questions, please contact us! 


Key Terms & Conditions

 

Exceptions may apply to islands and other remote territories.

All orders shipped by the carrier of our choice.  

 

 

 


 

 

 

The Wilkins RK6-375CK1 is a complete #1 check assembly repair kit designed to restore first check valve sealing and operation in 6 inch backflow preventers, eliminating the need for costly full unit replacement.

 

Key Specifications:

  • Size: 6 Inches
  • Compatibility: Models 375A, 475DA, 475DAV
  • Notable Certifications: ASSE 1013 Listed, C-UL Classified
  • Kit Components: Complete check assembly with seals
  • Warranty: 1-year limited warranty

 

Other Related Variants:

  • RK34-375CK1: 3/4 Inch version
  • RK1-375CK1: 1 Inch version
  • RK112-375CK1: 1 1/2 Inches version
  • RK2-375CK1: 2 Inches version
  • RK212-375CK1: 2 1/2 Inches version
  • RK3-375CK1: 3 Inches version
  • RK4-375CK1: 4 Inches version
  • RK8-375CK1: 8 Inches version
  • RK10-375CK1: 10 Inches version

 

Materials:

  • Stainless steel check assembly components
  • Rubber O-rings and seal rings
  • Bronze or brass seat assembly
  • Corrosion-resistant metal fasteners

 

Typical Installation:

Repair and maintenance of first check assembly in commercial, industrial, and institutional backflow prevention systems; potable water protection applications; fire protection systems; irrigation systems; process water systems; and anywhere Models 375A, 475DA, or 475DAV backflow preventers are installed and require first check valve servicing.

 

Standards Compliance:

ASSE 1013 Listed; C-UL Classified

 

Features & Benefits:

  • Cost Savings: Reduces maintenance costs by avoiding full backflow preventer replacement while restoring proper check valve operation.
  • Complete Kit: Includes all necessary components for first check assembly repair—seat retainer, poppet, seals, O-rings, and fasteners.
  • Easy Maintenance: Simplifies repair procedures with comprehensive kit containing every part needed for #1 check assembly restoration.
  • Certified Performance: ASSE 1013 Listed and C-UL Classified ensuring reliable backflow prevention compliance and safety standards.

 

FAQ

 

Q: Which backflow preventer models is the Zurn RK6-375CK1 compatible with?

A: The Zurn RK6-375CK1 is designed specifically for 6 inch Models 375A, 475DA, and 475DAV backflow preventers.

Q: What components are included in this repair kit?

A: The kit includes the #1 check assembly, seat retainer, seat assembly, #1 poppet, poppet retainer, poppet bolt, seal ring, seat O-ring, poppet bolt O-ring, and washer.

Q: Can I use this kit instead of replacing the entire backflow preventer?

A: Yes, the Wilkins RK6-375CK1 is designed to restore first check valve sealing and operation, eliminating the need for costly full backflow preventer replacement when only the first check assembly requires service.

 

NOTICE: Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system.

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