Zurn Wilkins RK18-860XL 1/8" Backflow Test Cock Repair Kit (Pack of 4)
Product Overview
The Zurn Wilkins RK18-860XL 1/8" Backflow Test Cock Repair Kit provides a complete set of factory replacement parts designed to restore testing functionality in Zurn Wilkins backflow preventers. This pack of four replacement test cocks ensures accurate testing, compliance with local inspection requirements, and extended service life of your backflow assemblies.
Built from durable, corrosion-resistant materials, the RK18-860XL is designed for reliability in both residential and light commercial applications. It is compatible with a wide range of Reduced Pressure Zone (RPZ), Double Check (DC), and Pressure Vacuum Breaker (PVB) backflow assemblies in 1/2", 3/4", and 1" sizes.
Features & Benefits
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Genuine Replacement Part – OEM test cock repair kit for guaranteed compatibility.
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Pack of Four – Includes all test cocks needed for a complete service.
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Restores Testing Accuracy – Maintains proper test port function for certification and compliance.
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Durable & Reliable – Manufactured from corrosion-resistant materials for long-lasting service.
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Wide Compatibility – Fits multiple Zurn Wilkins backflow models in smaller sizes.
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Cost-Effective Maintenance – Extends backflow preventer life without replacing the entire assembly.
Specifications
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Kit Model: RK18-860XL
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Size: 1/8" test cock replacement
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Quantity: Pack of 4
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Fits Zurn Wilkins Models:
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975XL / 975XL2 (1/2", 3/4", 1")
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950XL / 950XLT2 (3/4", 1")
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375 / 375XL (1/2", 3/4", 1")
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350 / 350XL (3/4", 1")
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Installation Tips
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Shut off water supply and relieve pressure before servicing.
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Replace all four test cocks at the same time for consistent performance.
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Verify model and size compatibility before installation.
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After replacement, test the assembly to confirm proper operation and compliance.
FAQs
Q: What is included in this repair kit?
A: The kit includes four OEM 1/8" test cocks for Zurn Wilkins backflow preventers.
Q: Which models does this kit fit?
A: It fits select 975XL/975XL2, 950XL/950XLT2, 375/375XL, and 350/350XL assemblies in 1/2", 3/4", and 1" sizes.
Q: Do I need to replace all test cocks at once?
A: Yes, it’s best practice to replace all four simultaneously for even wear and reliable performance.
Q: Can this be installed without a licensed plumber?
A: Professional installation is recommended to ensure code compliance and accurate testing.
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