Danfoss Introduces New EVR and NRV Solutions for HVAC and Refrigeration Systems

Danfoss Launches EVR and NRV Safety Valves to Meet Stringent UL 60335-2-40 and UL 60335-2-89 Standards

Danfoss, a global leader in engineering technologies, is proud to announce the release of its new and reliable EVR and NRV Safety Valves, approved to meet UL 60335-2-40 and UL 60335-2-89 standards.

As the industry faces tighter safety regulations, the Danfoss EVR solenoid valves and NRV check valves provide a solution for separating flammable refrigerant charges (A2L, A2, or A3) in case of leaks, thereby reducing the total releasable charge in higher capacity systems. By meeting the stringent UL requirements, these Danfoss valves are a critical component for manufacturers, installers and operators striving for compliance and enhanced system safety.

Key Features and Benefits:

• UL 60335-2-40 & UL 60335-2-89 Compliance: Designed to fully comply with the new safety standards, ensuring safe operation of systems using flammable refrigerants.
• Enhanced Leak Safety: Effectively isolates flammable refrigerants during leaks, mitigating potential hazards and improving overall system safety.
• Fail-Safe Operation: Features automatic shut-off to prevent refrigerant backflow and leakage, providing an additional layer of protection during power failures.
• Versatile Application: Ideal for a range of HVAC and refrigeration systems, offering flexibility across multiple system designs and requirements.

“Our EVR and NRV valves were developed with the primary focus of meeting the new UL 60335-2-40 and UL 60335-2-89 standards,” said Douglas Custodio, director of sales development at Danfoss. “This is a crucial development for the industry as safety regulations evolve and we are excited to offer a solution that enhances safety while helping businesses remain compliant with the upcoming regulations.”

Danfoss’ EVR and NRV valves are available in multiple sizes, ensuring they are adaptable to a wide range of system configurations and needs. The valves are easy to install, minimizing disruption during installation and offering a reliable solution for maintaining safety standards in HVAC and refrigeration systems.

Safety Shut-Off Valve Principles and Product Overview

Danfoss EVR Solenoid Shut-Off Valve (SSOV) and NRV Check Shut-Off Valve (CSOV) are unidirectional, easy-to-install, and offer comprehensive shut-off solutions that significantly enhance safety in air conditioning, heat pump and refrigeration applications.

• Solenoid Shut-Off Valve (SSOV): Utilized in refrigeration systems to provide a secure separation of flammable refrigerants during leak detection.
• Check Shut-Off Valve (CSOV): Prevents refrigerant backflow, ensuring effective isolation when combined with the SSOV.

The SSOV is designed with a normally closed (NC) configuration, ensuring fail-safe closing in the event of an electrical power failure, and is approved to meet the required leak rates in a closed condition.