For Danfoss NRVH Series (Originals): 100% Interchangeable

KC-NRVH Series is a 100% Direct Replacement for Danfoss NRVH Series hydraulic valves, offering the following key advantages:

Seamless Compatibility: Direct replacement without system modifications, significantly reducing costs and downtime.

Warranty Assurance: Comes with a 12-month warranty, matching OEM reliability standards.

High Performance: KC-NRVH is a piston-type check valve with a 0.3 bar spring and built-in damping piston, ensuring unidirectional flow and resisting pulsation/vibration. It supports fluorinated refrigerants and CO₂, with straight/angle versions and flare/solder connections.

Wide Applicability: Liquid/suction/hot gas lines in AC, refrigeration, and heat pump systems. Especially suited for parallel-compressor setups and CO₂ units.

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Specific Model & Advantages

KC-NRVH 6s/KC-NRVH 22s/KC-NRVH 19s/KC-NRVH 19s

100% Interchangeable Replacement | For Danfoss NRVH 6s/NRVH 22s/NRVH 19s/NRVH 19s

Danfoss NRVH is a piston-type check valve with a 0.3 bar spring and damping piston, ensuring unidirectional flow, resisting pulsation, compatible with fluorinated refrigerants and CO₂, available in straight/angle types with flare/solder connections. It can be a full replacement for similar check valves in HVAC&R systems due to its reliable performance and interchangeable design.

Technical Data

Type	Max. inlet pressure (P)	Max. work port press. (A/B)（A/B）bar	Nominal flow rate L/min	Max. Flow L/min	Number of ports
NRVH 6s	49	49	12	15	2
NRVH 22s	49	49	163	180	2
NRVH 19s	46	46	140	160	2

Applications

Parallel Compressor Installations in Refrigeration Systems: The NRVH series is specifically designed for such setups, featuring a strong spring with a pressure difference of 0.3 bar to prevent backflow.

Example Model: NRVH 22s (020-1072) - Used in liquid, suction, and hot gas lines for various refrigerants like R404A/R507, R410A.

Commercial Air Conditioning and Refrigeration Systems: These valves control unidirectional refrigerant flow in liquid, suction, and hot gas pipelines.

Example Model: NRVH 35s (020-1034) - Suitable for applications requiring 1 3/8 inch connections and compatible with refrigerants including R134a, R407C, R410A.

Conventional Refrigeration Systems & Heat Pumps: NRVH valves are widely used in standard systems, including air conditioning units and transport refrigeration.

Example Model: NRVH 10s (020-1063) - A straight-through welding type valve for multiple refrigerants such as R32, R290