Danfoss Introduces Cutting-Edge EVR and NRV Safety Valves for Compliance in HVAC and Refrigeration

Danfoss, a leader in engineering technologies, is thrilled to announce the release of its advanced EVR and NRV Safety Valves. These products meet the rigorous UL 60335-2-40 and UL 60335-2-89 safety standards, offering vital solutions for HVAC and refrigeration systems utilizing flammable refrigerants.

Addressing stringent safety regulations, the newly launched EVR solenoid valves and NRV check valves are engineered to handle the challenges posed by flammable refrigerants, including A2L, A2, or A3 types. The valves ensure the safe separation of refrigerant charges in case of leaks, thereby reducing the total releasable amount in high-capacity systems.

Key Features and Benefits of Danfoss Safety Valves:

• UL Compliance: The valves are fully compliant with UL 60335-2-40 and UL 60335-2-89 standards, guaranteeing safe operation in systems using flammable refrigerants.
• Leak Safety Enhancement: These valves are designed to isolate flammable refrigerants effectively during leaks, significantly mitigating potential hazards and enhancing overall system safety.
• Fail-Safe Operation: Featuring automatic shut-off capabilities, the valves provide an additional layer of protection by preventing refrigerant backflow and leakage, especially during power failures.
• Versatile Application: The valves are ideal for various HVAC and refrigeration systems, offering flexibility across multiple designs and requirements.

Douglas Custodio, director of sales development at Danfoss, emphasized the significance of these innovations: "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. 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 offers these valves in multiple sizes, ensuring they fit a wide range of system configurations. The ease of installation minimizes disruptions and provides a dependable solution for maintaining high safety standards in HVAC and refrigeration systems.

A Closer Look at Danfoss Shut-Off Valve Technology:

The EVR Solenoid Shut-Off Valve (SSOV) and the NRV Check Shut-Off Valve (CSOV) serve as unidirectional solutions that greatly enhance safety in air conditioning, heat pump, and refrigeration applications.

• Solenoid Shut-Off Valve (SSOV): Specifically used in refrigeration systems, these valves ensure the secure separation of flammable refrigerants upon detecting leaks.
• Check Shut-Off Valve (CSOV): Designed to prevent refrigerant backflow, CSOVs offer effective isolation, especially when used alongside SSOVs.

The SSOVs are built with a normally closed (NC) configuration, ensuring they close safely in the event of a power outage, meeting the required leak rates in a closed state.

Danfoss continues to lead the way in providing innovative solutions that address the industry's evolving demands for safety, efficiency, and reliability.