The Valve,check, cataloged under National Stock Number 4820-01-347-4345, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kirby Morgan Dive Systems Inc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-347-4345 |
| Primary Part Number | 505-060 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| Status | ACTIVE |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Criticality Code Justification | FEAT |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 505-060 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 4820PL2142993 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 592-6318200 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 4820-01-347-4345 is a Valve,check, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-347-4345 has 1 manufacturer part number on file: 505-060 (Kirby Morgan Dive Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-550-7038. Verify interchangeability with system specifications before substitution.
Key specifications for 505-060: Connection Style: PLAIN (PIPE) ALL ENDS; Criticality Code Justification: FEAT; Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRU. 5 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.