Wilkins RK4-350CK2 | Repair Kit #2 Check Assembly, 2-1/2" – 4"
Wilkins RK4-350CK2 | Repair Kit #2 Check Assembly, 2-1/2" – 4" is backordered and will ship as soon as it is back in stock.
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The Wilkins RK4-350CK2 is a comprehensive #2 Check Assembly repair kit designed for mid-range backflow prevention valves, ensuring reliable performance and extended service life across multiple model families.
Key Specifications:
- Compatible Sizes: 2-1/2", 3", 4" Inches
- Compatible Models: 350, 350A, 350DA, 375A, 450DA, 475DAV
- Kit Components: 9 essential replacement parts
- Application: Second check assembly replacement
- Design Focus: Mid-range valve maintenance
Other Related Variants:
- RK212-350CK2: Limited to 2-1/2" – 3" sizes
- RK6-350CK2: For 6 Inches valves
- RK8-350CK2: For 8" – 12" large-diameter valves
Materials:
- Seat Retainer #2
- O-Ring Check
- Poppet Retainer with Bolt
- Washer for Poppet Bolt
- O-Ring for Poppet Bolt
- Seal Ring
- Seat Assembly #2 Poppet
- Lubricant
Typical Installation:
This Zurn RK4-350CK2 repair kit is designed for servicing second check assemblies in backflow prevention systems installed in commercial, industrial, and residential water distribution applications where mid-range valve maintenance is required across the 350, 375, 450, and 475 model families.
Standards Compliance:
Designed for use with ASSE-listed and approved backflow prevention assemblies
Features & Benefits:
- Complete Assembly Kit: Includes all 9 components needed for comprehensive #2 check assembly replacement, eliminating the need for separate part orders.
- Multi-Model Compatibility: The Wilkins RK4-350CK2 supports multiple backflow model families (350, 350A, 350DA, 375A, 450DA, 475DAV) across three valve sizes, simplifying inventory management.
- Extended Service Life: Quality-engineered components including seat assemblies, O-rings, and seal rings restore optimal valve performance and extend operational reliability.
- Simplified Maintenance: Pre-packaged with all necessary parts and lubricant for efficient field service and reduced downtime during routine maintenance procedures.
FAQ
Q: What valve models and sizes is the RK4-350CK2 compatible with?
A: The Zurn RK4-350CK2 is compatible with 2-1/2", 3", and 4" Models 375A and 350ADA, as well as 4" Models 375, 350, 475, and 450. It supports multiple backflow prevention valve families requiring second check assembly replacement.
Q: What components are included in this repair kit?
A: The kit includes Seat Retainer #2, O-Ring Check, Bolt Poppet Retainer, Washer Poppet Bolt, O-Ring Poppet Bolt, Poppet Retainer, Seal Ring, Seat Assembly #2 Poppet, and Lubricant—everything needed for complete #2 check assembly replacement.
Q: How does the RK4-350CK2 differ from other variants?
A: The RK4-350CK2 covers mid-range sizes (2-1/2" to 4"), while RK212-350CK2 is limited to smaller 2-1/2"–3" sizes, RK6-350CK2 serves 6" valves, and RK8-350CK2 handles large 8"–12" diameter applications.
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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Always consult with a licensed professional and check local codes before installation. For further details, check the Owners Manual.
Contact us at support@bottlefillingstations.com with any questions.




