The Valve,check, cataloged under National Stock Number 4820-01-338-3887, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Valve,check |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (CAGE 16236); Tat Technologies Ltd Div Tat Israel (CAGE 1523A) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-338-3887 |
| Primary Part Number | 4202-4 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 4202-4 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| 4202-4 | Tat Technologies Ltd Div Tat Israel (ISR) |
| Reference | Meaning |
|---|---|
| 4820PL0625200 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4202-4 | 5/9 Secondary reference Tat Technologies Ltd |
| 4202-4 | 5/9 Secondary reference U.S. Government activity |
| 4820PL1809509 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 16VY101002-3 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-338-3887 is a Valve,check, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-338-3887 has 2 manufacturer part numbers on file: 4202-4 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), 4202-4 (Tat Technologies Ltd Div Tat Israel).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-416-7432. Verify interchangeability with system specifications before substitution.
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.