Danfoss NRVA 40-50 Check Valve Body (Flangeless)

Danfoss NRVA 40-50 check-valve body, OEM P/N 020-2024 — the flangeless valve housing (without flanges) of the NRVA industrial refrigeration check valve. Ordered separately from the weld/socket/solder/FPT flange set so the same body can be matched to any connection standard. Contains the damping piston and PTFE seat; prevents reverse refrigerant flow in ammonia (R717), HCFC and HFC plant. Straightway pattern, no orientation limitation. Max working pressure 40 bar (580 psig); media temperature -50 °C to 140 °C. Kv 44 m³/h. Pair with the matching NRVA flange kit for the required connection.

Brand

Danfoss

Part number

020-2024

Model

NRVA 40-50 check valve body (flangeless housing), industrial refrigeration

Category

HVAC & Refrigeration — Check Valves

Type

Valve body only — flanges ordered separately

Direction

Straightway

Connection

Without flange (body accepts butt-weld / socket-weld / solder / FPT flange sets)

Max working pressure (PS/MWP)

40 bar (580 psig)

Media temperature range

-50 °C to 140 °C (-58 °F to 284 °F)

Kv

44 m³/h (Cv 51 gal/min)

Flow

single flow, with built-in damping piston

Net weight

1.78 kg (gross 1.906 kg)

Packing

Multi pack

EAN

5702422024996

Materials

Valve housing steel (A352 LCC / P285QH); valve seat PTFE; spring stainless steel (A2-70); damping piston stainless steel

Approvals

CE (PED Cat. II), EU RoHS

Refrigerants

HCFC, HFC and R717 (Ammonia) — see datasheet for the full approved list

Product group

Check valves

Approval

CE

CE mark

Yes

China RoHS compliance

Yes

Comments

WITHOUT FLANGE

Cv value [gal/min]

51.04 gal/min

EU RoHS compliance

Yes

Fluid Group

1

Further information

Without flange

Kv value [m³/h]

44 m³/h

Max. Working Pressure [bar]

40 bar

Max. Working Pressure [psig]

580 psig

PED category

II

REACH Candidate List substances

No

Temperature range [°C] [max]

140 °C

Temperature range [°C] [min]

-50 °C

Temperature range [°F] [max]

284 °F

Temperature range [°F] [min]

-58 °F

Used for product

NRVA 40-50

Material

Valve housing steel (A352 LCC / P285QH); valve seat PTFE; spring stainless steel (A2-70); damping piston stainless steel

Pressure Rating

40 bar (580 psig) max working pressure

Temperature Range

-50 °C to 140 °C

Classification / Approval

CE (PED Cat. II), EU RoHS

HS Code

8481.90