The Wilkins RK212-975R is a comprehensive elastomer seal kit designed to restore discontinued 2-1/2" to 6" Model 975 Reduced Pressure Principle Backflow Preventers.

Key Specifications:

• Size Range: 2-1/2 to 6 Inches
• Compatible Model: Model 975 (discontinued)
• Kit Components: Eight rubber seals and o-rings
• Application Type: Repair kit accessory
• Primary Function: Relief valve seal replacement

Other Related Variants:

• N/A: This is a specific kit for large, discontinued Model 975 units. Newer 300/400 series models recommended as replacements.

Materials:

• Rubber diaphragm
• Elastomer o-rings
• Rubber seal ring

Typical Installation:

Used for servicing and maintaining discontinued 2-1/2" to 6" Model 975 Reduced Pressure Principle Backflow Preventers in commercial, industrial, and institutional water supply systems requiring reliable backflow prevention.

Standards Compliance:

Designed for use with backflow preventers meeting applicable water supply protection standards

Features & Benefits:

• Complete Seal Replacement: Includes all eight essential rubber components for comprehensive relief valve restoration.
• Targeted Compatibility: Specifically engineered for large 2-1/2" to 6" discontinued Model 975 backflow preventers.
• Extended Equipment Life: Restores proper sealing function to aging units, postponing costly full assembly replacement.
• Comprehensive Kit: Contains diaphragm, spring retainer o-ring, stem guide o-ring, stem o-ring, seal ring, sensing line o-ring, large o-ring, and small o-ring.

FAQ

Q: What components are included in the Zurn RK212-975R repair kit?

A: The Zurn RK212-975R includes one diaphragm, one spring retainer o-ring, one stem guide o-ring, one stem o-ring, one seal ring, one sensing line o-ring, one large o-ring, and one small o-ring.

Q: Which backflow preventer models is this repair kit compatible with?

A: This kit is designed exclusively for discontinued 2-1/2" to 6" Model 975 Reduced Pressure Principle Backflow Preventers. For newer installations, consider the 300/400 series models.

Q: Can this repair kit be used on smaller Model 975 units?

A: No, the Wilkins RK212-975R is specifically sized for large 2-1/2" to 6" Model 975 units. Different repair kits are required for smaller sizes.

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