The Disk,valve, cataloged under National Stock Number 4820-00-372-0714, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-372-0714 |
| Primary Part Number | P645 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| 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 |
|---|---|
| P645 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| 5S1102PC6 | 3/2 Design control — primary reference U.S. Government activity |
| 4171 | 5/9 Secondary reference Behne Machine Company Inc |
NSN 4820-00-372-0714 is a Disk,valve, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-372-0714 has 1 manufacturer part number on file: P645 (Derbyshire Machine & Tool Co).
2 possible matches (shared part number, not a government interchangeability claim): 4710-00-399-2867, 4730-01-548-1276. Verify interchangeability with system specifications before substitution.
Key specifications for P645: End Item Identification: VALVE ANGLE 3.00IPS. 0 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.