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.

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