Danfoss 065B-8877LF Valve

The Danfoss 065B-8877LF Valve is a professional-grade lead-free thermostatic mixing valve designed for high-precision temperature regulation in internal domestic hot water and hydronic heating systems. Engineered with a 3/4" union connection and a 1.9 Cv flow coefficient, this ASSE 1017 certified valve provides reliable anti-scald protection by automatically shutting down hot water flow if the cold water supply fails. The Danfoss ESBE VTA series is the industry standard for "Point of Source" applications, allowing technicians to maintain high storage temperatures to prevent Legionella growth while delivering a safe, tempered output ranging from 85-120°F. Built with a corrosion-resistant brass body, the 065B-8877LF ensures long-term performance in potable water environments and is a direct, drop-in replacement for older Series 20 and 30MR models.

Key Benefits

• Precise Temperature Control: Maintains a consistent 85-120°F output, ideal for domestic hot water and radiant floor heating.
• Safety-First Engineering: Fail-safe anti-scald function meets rigorous plumbing codes and protects end-users.
• Lead-Free Reliability: Fully compliant with NSF/ANSI 372 standards for potable water safety.
• Contractor-Friendly Install: Features a 3/4" union body compatible with solder or CPVC tailpieces (sold separately).
• Tamper-Resistant Design: Includes a snap-on cover to protect thermostatic mixing valve settings from unauthorized adjustment.

Common Questions

Does this valve require specific tailpieces?
Yes, as a union-style body, the 065B-8877LF requires separate tailpiece kits. Depending on the job site requirements, you can utilize 3/4" solder, 3/4" CPVC, or 1" solder connections to complete the installation.

Can this be used for boiler return protection?
While the 85-120°F range is primarily for domestic point-of-source or low-temp radiant, it can be used in specific hydronic heating systems where return temperatures must be tempered to prevent flue gas condensation.

What is the maximum inlet temperature?
This Danfoss mixing valve is rated for a maximum hot water inlet temperature of 194°F, making it suitable for use with high-temperature storage tanks and commercial water heaters.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.