The Valve,check, cataloged under National Stock Number 4820-01-157-3543, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hiab Usa Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-157-3543 |
| Primary Part Number | 390 8429 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hiab Usa Inc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Style Designator | STRAIGHT THRU |
| Valve Operation Method | AUTOMATIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 390 8429 PRIMARY | Hiab Usa Inc (USA) |
| Reference | Meaning |
|---|---|
| 390 8208 | D/9 Drawing number reference only Hiab Usa Inc |
| 390 8208 ITEM 32 | 5/9 Secondary reference Hiab Usa Inc |
NSN 4820-01-157-3543 is a Valve,check, manufactured by Hiab Usa Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-157-3543 has 1 manufacturer part number on file: 390 8429 (Hiab Usa Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-158-8046, 2910-01-281-1083. Verify interchangeability with system specifications before substitution.
Key specifications for 390 8429: Flow Control Device: POPPET; Connection Style: PLAIN (TUBE) SECOND END; Connection Style: PLAIN, OPTIONAL END (PIPE) FIRST END; Mounting Position: HORIZONTAL. 8 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.