The Valve,check, cataloged under National Stock Number 4820-01-053-5852, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-053-5852 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM THIRD RESPONSE LBS |
| Maximum Operating Temp | 280.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | 280.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Maximum Operating Temp | 280.0 FAHRENHEIT THIRD RESPONSE DEGF |
| Surface Treatment | OXIDE |
| Media for Which Designed | WATER-OIL-GAS THIRD RESPONSE |
| Media for Which Designed | AIR FIRST RESPONSE |
| Media for Which Designed | ALCOHOL, ISOPROPYL SECOND RESPONSE |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| C249S2Q | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-053-5852 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-079-4751. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-053-5852: Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM THIRD RESPONSE LBS; Maximum Operating Temp: 280.0 FAHRENHEIT SECOND RESPONSE DEGF. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.