The Valve,check, cataloged under National Stock Number 4820-01-437-4110, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-437-4110 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 80.0 CELSIUS SINGLE RESPONSE DEGC |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING |
| 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 |
|---|---|
| 4031E | 5/9 Secondary reference Flomatic Corporation |
| 4031 | 5/9 Secondary reference Flomatic Corp |
| 4031E | 3/9 Design control — primary reference Flomatic Corp |
NSN 4820-01-437-4110 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-437-4110: Operating Pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Maximum Operating Temp: 80.0 CELSIUS SINGLE RESPONSE DEGC; Special Features: THD FEMALE 1.000 IN DIA FPT CONNECTOR; UNLEADED METAL ALLOY BODY IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR PACKING. 3 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.