Send feedback
Report an error

Danfoss check valves ensure proper flow direction and prevent refrigerant from condensing due to backflow from the warmer part of the system to the colder evaporator. They can be used in liquid, suction, and hot gas pipelines in refrigeration and air conditioning systems with refrigerants from groups HCFC, HFC, flammable HC, and NH3. Special versions with a maximum operating pressure of 90 bar are available for CO2 installations. Valves are available in straight-through and angled versions.

Parameters

Performance

All

All

All

All

All

NRV

NRV

Danfoss
Refrigerant:
R22, R134a, R290, R32, R404A, R407A, R407C, R407F, R410A, R448A, R449A, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R507, R513A, R600a, R1234yf
Inlet connection type:
Flare, Soldered
Body geometry:
Angleway, Straightway
Maximum working pressure [bar]:
46 - 49
NRVH

NRVH

Danfoss
Refrigerant:
R22, R134a, R290, R32, R404A, R407A, R407C, R407F, R410A, R448A, R449A, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R507, R513A, R600a, R1234yf
Inlet connection type:
Soldered
Body geometry:
Angleway, Straightway
Maximum working pressure [bar]:
46 - 49
NRVA

NRVA

Danfoss
Refrigerant:
R22, R134a, R32, R404A, R407A, R407C, R407F, R410A, R448A, R449A, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R513A, R1234yf, R1234ze
Inlet connection type:
Flange
Body geometry:
Straightway
Maximum working pressure [bar]:
40
NRVS

NRVS

Danfoss
Refrigerant:
R22, R134a, R404A, R407A, R407C, R407F, R410A, R717 (ammonia)
Inlet connection type:
Flange
Body geometry:
Straightway
Maximum working pressure [bar]:
28

Danfoss check valves ensure proper flow direction and prevent refrigerant from condensing due to backflow from the warmer part of the system to the colder evaporator. They can be used in liquid, suction, and hot gas pipelines in refrigeration and air conditioning systems with refrigerants from groups HCFC, HFC, flammable HC, and NH3. Special versions with a maximum operating pressure of 90 bar are available for CO2 installations. Valves are available in straight-through and angled versions.

Check valves applications:

  • Traditional refrigeration systems
  • Heat pump systems
  • Air conditioning equipment
  • Liquid coolers
  • Mobile refrigeration systems

The check valve eliminates the problem of resonance during partial thermal load of the refrigeration system. It prevents refrigerant backflow and condensation in the colder part of the system, ensuring proper flow direction.

Danfoss check valve offer includes:

  • NRV check valves for refrigeration

NRV and NRVH valves optimized for applications in refrigeration and air conditioning systems filled with fluorinated refrigerants, in liquid, suction, and hot gas pipelines. The NRV series is available with solder or threaded connections and with oversized solder connections, providing flexibility in valve usage. The NRVH valve is designed for systems with compressors connected in parallel.

  • CHV-X/CHV-X SS check valves

CHV-X valves are available in angled versions. They open at very low pressure differentials, ensuring favorable flow conditions and allowing for easy dismantling for inspection and servicing. CHV-X SS check valves made of stainless steel are available in angled and straight-through versions.

  • SCA-X/SCA-X SS check and shut-off valves

Check valves with a built-in shut-off function, available in angled versions. SCA-X SS valves are made of stainless steel.

Due to frequent changes and updates, presented data are provided on illustrative basis only. All materials contained on this website are protected by copyright and their use, copying and publishing in any form is prohibited without the written consent of Elektronika SA. Please read the full Terms of Use.

Sales of equipment

We are a direct importer, representative and authorized distributor of the world's leading refrigeration and air conditioning manufacturers. The main activity of the company is wholesale and distribution of HVACR equipment and accessories, including heat pumps and chillers, through its own network of branches.

Check our offer

Technical support

We actively support our HVACR Installers and Designers. We organize product trainings; provide assistance and technical advice to refrigeration and air conditioning engineers at every stage of the investment realization. Hundreds of successful investments confirm our competence and extensive experience.

Check our offer

Investment processes

Our organizational structures include Investment Implementation Departments, which, based on the skills of engineers and designers, in cooperation with installation companies from the investment area, are able to design and implement the most modern cooling, freezing and air conditioning units.

Check our offer

Cookies information

This website uses cookies to improve the quality of the services provided. It also uses the Third-Party cookies, they provide tools and solutions that improve the ergonomics and functionality of the website, such as video playback, website usage analytics and marketing content customization.

By clicking accept, you agree to use cookies, as outlined in our Cookie Policy