The Ring,fit-Up,ball Valve, cataloged under National Stock Number 4820-01-232-4791, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Machine & Tool Co. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-232-4791 |
| Primary Part Number | 87-D-062 |
| Item Name | Ring,fit-Up,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Machine & Tool Co |
| Status | ACTIVE |
| General Characteristics Item Description | COPPER ALLOY MIL-C-15726 70/30 HARD; OD 15.750 IN.,H 0.625 IN. MIN 1.375 IN. MAX; ID 11.375 IN. IN |
| 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 |
|---|---|
| 87-D-062 PRIMARY | Derbyshire Machine & Tool Co (USA) |
| Reference | Meaning |
|---|---|
| C-4673 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 209-2212009 PIECE 23 | 5/9 Secondary reference U.S. Government activity |
| 9872-809X2 PIECE 23 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-232-4791 is a Ring,fit-Up,ball Valve, manufactured by Derbyshire Machine & Tool Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-232-4791 has 1 manufacturer part number on file: 87-D-062 (Derbyshire Machine & Tool Co).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-232-4807. Verify interchangeability with system specifications before substitution.
Key specifications for 87-D-062: General Characteristics Item Description: COPPER ALLOY MIL-C-15726 70/30 HARD; OD 15.750 IN.,H 0.625 IN. MIN 1.375 IN. MAX; ID 11.375 IN. IN. 1 specification is 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.