| Brand | Danfoss |
| Part number | 020-2020 |
| Model | NRVA 15-20 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 | 5 m³/h (Cv 6 gal/min) |
| Flow | single flow, with built-in damping piston |
| Net weight | 0.211 kg (gross 0.264 kg) |
| Packing | Multi pack (12 pc) |
| EAN | 5702422044123 |
| Materials | Valve housing steel (A352 LCC / P285QH); valve seat PTFE; spring stainless steel (A2-70); damping piston stainless steel |
| Approvals | CE, PED (Art. 4 par. 3), EU RoHS |
| Refrigerants | HCFC, HFC and R717 (Ammonia) — see datasheet for the full approved list |
| Product group | Check valves |
| Approval | EAC |
| CE mark | Yes |
| China RoHS compliance | Out of scope |
| Comments | WITHOUT FLANGE |
| Cv value [gal/min] | 6 gal/min |
| EU RoHS compliance | Out of scope |
| Fluid Group | 1 |
| Further information | Without flange |
| Kv value [m³/h] | 5 m³/h |
| Max. Working Pressure [bar] | 40 bar |
| Max. Working Pressure [psig] | 580 psig |
| PED category | Art. 4, par. 3 |
| REACH Candidate List substances | Lead (CAS no. 7439-92-1) |
| 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 15-20 |
