The Wilkins RK4-350 is a standard repair kit designed to restore backflow prevention function for 2-1/2" - 4" Model 350A/375/475 assemblies.

Key Specifications:

• Compatible Sizes: 2-1/2" - 4"
• Compatible Models: 350A/375/475 and 350/450
• Kit Components: Two check O-rings, seals
• Notable Certifications: ASSE 1015, CSA B64.5
• Material Compliance: Lead-Free

Other Related Variants:

• RK1-350: 1 Inches version with check assemblies
• RK34-350: 3/4 Inches version with check assemblies
• RK212-350: 2 1/2 Inches version
• RK6-350: 6 Inches version
• RK8-350: 8" - 12" version

Materials:

• Lead-Free compliant materials
• O-ring sealing components
• Seal rings

Typical Installation:

Used for repairing and maintaining backflow prevention assemblies in commercial and residential plumbing systems where potable water protection is required. Suitable for servicing existing Wilkins Model 350A, 375, 475, 350, and 450 backflow preventers to restore proper sealing and prevent contamination of water supply systems.

Standards Compliance:

ASSE 1015; CSA B64.5

Features & Benefits:

• Complete Repair Solution: Includes two check O-rings, eight poppet bolt O-rings, and two seal rings for comprehensive repair without full assembly replacement.
• Lead-Free Compliance: Meets lead-free material requirements ensuring safe potable water contact and regulatory compliance.
• Cost-Effective Maintenance: Allows quick repair of internal seals to restore Zurn RK4-350 backflow prevention function while avoiding expensive full assembly replacement.
• Standards Certified: Complies with ASSE 1015 and CSA B64.5 standards for reliable backflow prevention performance.

FAQ

Q: Which backflow preventer models is the Zurn RK4-350 compatible with?

A: This repair kit is designed for 2-1/2" - 4" Model 350A/375/475 backflow preventers and 4" Model 350/450 assemblies.

Q: What components are included in the Wilkins RK4-350 repair kit?

A: The kit includes two check O-rings, eight poppet bolt O-rings, and two seal rings for complete internal seal replacement.

Q: Is this repair kit lead-free compliant?

A: Yes, the RK4-350 is manufactured with lead-free materials and complies with ASSE 1015 and CSA B64.5 standards for safe potable water applications.

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