Danfoss NRVH 28s Check Valve 35 mm (1 3/8 in) ODF Angleway 020-1068
Danfoss · HVAC & Refrigeration · Check Valves
Danfoss NRVH 28s piston-type check valve (non-return valve), OEM P/N 020-1068. 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, with a higher minimum opening pressure differential (0.3 bar / 4.35 psi) than the standard NRV (about 0.02–0.04 bar); it is intended for systems with parallel-connected (power-pack) compressors where discharge-line pulsation is higher. Angleway pattern, Solder, ODF connection 35 mm (1 3/8 in), inlet and outlet. Built-in damping piston. Max working pressure 46 bar (667 psig); media temperature -50 to 140 °C (-58 to 285 °F). Kv per the NRV/NRVH datasheet. UL (C UL US Listed) and EAC. Refrigerant compatibility per the NRV/NRVH datasheet — verify against your system charge. Price on quote.
Specifications
- Part number
- 020-1068
- HS code
- 8481.30
- Material
- Connection tube copper; solder ring brass; sealing disk brass; piston stainless steel; spring brass; valve body brass; guide brass; washer PTFE with glass fibre
- Pressure rating
- 46 bar (667 psig) max working pressure
- Temperature range
- -50 to 140 °C
Compatibility
Install in the direction of the flow arrow. The differential pressure across the valve must exceed the minimum opening pressure differential (0.3 bar), 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