Danfoss NRVH 19s Check Valve 3/4 in ODF Solder Straightway 020B1023
Danfoss · HVAC & Refrigeration · Check Valves
Danfoss NRVH 19s piston-type check valve (non-return valve), OEM P/N 020B1023. Controls unidirectional refrigerant flow to prevent back-flow in commercial refrigeration and air-conditioning systems. NRVH is the stronger-spring variant of the NRV line, intended for systems with parallel-connected (power-pack) compressors where discharge-line pulsation is higher. Straightway pattern, Solder ODF connection 3/4 in (19 mm), inlet and outlet. Built-in damping piston. Max working pressure 49 bar (710 psig); media temperature -50 °C to 155 °C. Refrigerant compatibility is listed on the datasheet — verify against your system charge.
Specifications
- Part number
- 020B1023
- HS code
- 8481.30
- Material
- Valve body brass; connection tube copper; built-in damping piston; stronger spring (NRVH) — full material breakdown in the NRV/NRVH datasheet
- Pressure rating
- 49 bar (710 psig) max working pressure
- Temperature range
- -50 °C to 155 °C
Compatibility
Install in the direction of the flow arrow. The differential pressure across the valve must exceed the minimum opening pressure differential, including at the lowest capacity of capacity-regulated compressors. Braze the ODF solder ends with care to protect the internal seals. Verify code, connection size and spring variant (NRV vs NRVH) before ordering.
Standards
Approvals
HVAC & Refrigeration · More Danfoss · Printable datasheet