The Wilkins RK212-350CK2 is a comprehensive repair kit designed to service the second check assembly in double check and RP backflow preventers for 2-1/2" and 3" Models 375, 350, 475, and 450.

Key Specifications:

• Size: 2-1/2" and 3"
• Compatible Models: 375, 350, 475, 450
• Application: Second check assembly service
• Assembly Type: Complete repair kit
• Components Included: Nine critical sealing components

Other Related Variants:

• RK4-350CK2: 4" size support with additional model compatibility
• RK6-350CK2: 6" valves only
• RK8-350CK2: Large 8"–12" valve sizes

Materials:

• O-Ring seals for durable sealing performance
• Seat retainer components for structural integrity
• Poppet assembly materials for reliable check valve operation
• Seat ring constructed for long-lasting performance
• Premium lubricant for smooth operation

Typical Installation:

Used to service and restore downstream sealing performance in the second check assembly of double check valve assemblies and reduced pressure zone backflow prevention assemblies in commercial, industrial, and municipal water systems requiring routine maintenance and compliance testing.

Standards Compliance:

Designed for use with ASSE 1015 listed devices; USC FCCCHR approved assemblies; meets applicable backflow prevention standards

Features & Benefits:

• Complete Repair Solution: Includes all nine essential components needed to fully rebuild the second check assembly, eliminating the need for multiple orders.
• Restores Downstream Sealing: Designed specifically to restore optimal sealing performance in the critical second check, ensuring continued backflow protection and compliance.
• Wide Model Compatibility: Compatible with multiple Wilkins RK212-350CK2 and Zurn RK212-350CK2 series models (375, 350, 475, 450) in both 2-1/2" and 3" sizes.
• Simplified Maintenance: Pre-packaged with lubricant and all necessary sealing components for efficient field servicing and reduced downtime.

FAQ

Q: What components are included in the RK212-350CK2 repair kit?

A: The kit includes Seat Retainer #1, O-Ring Seat, Nut Poppet Retainer, Washer #2 Check, O-Ring Stem, Poppet Retainer, Seat Ring, Seat Assembly #2 Poppet, and Lubricant.

Q: Which valve models and sizes is this repair kit compatible with?

A: This repair kit is designed for 2-1/2" and 3" Models 375, 350, 475, and 450 double check and RP backflow preventers.

Q: How does this kit differ from the RK4-350CK2 or RK6-350CK2 variants?

A: The RK212-350CK2 is for 2-1/2" and 3" sizes, while RK4-350CK2 adds 4" size support with additional model compatibility, RK6-350CK2 is specifically for 6" valves, and RK8-350CK2 covers large 8"–12" valve sizes.

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