The Disk,valve, cataloged under National Stock Number 4820-01-058-7876, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. The record lists 4 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Item Name | Disk,valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); William Powell Company, the Dba Powell Valve Div the Starflo Corporation (CAGE 48422) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-058-7876 |
| Primary Part Number | 1889567PC18ASSYA1-2IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | CANCELLED |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SS845-1889567 PIECE 18 1-2IN | Naval Sea Systems Command (USA) |
| F-26534-C | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| 1889567PC18ASSYA1-2IN PRIMARY | Naval Sea Systems Command (USA) |
| 2620-925X2 PIECE 18 1-2IN PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2620-925X1ASSYA PC 19 1/2IN | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 2620-925X2 PIECE 18 1-2IN | 5/9 Secondary reference U.S. Government activity |
| SS845-1889566ASSYA PC 19 1/2IN | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| SS845-1889567 | D/9 Drawing number reference only Naval Sea Systems Command |
| F26534-316 | C/1 Advisory reference — outside the item-of-supply concept William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
NSN 4820-01-058-7876 is a Disk,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: cancelled.
NSN 4820-01-058-7876 has 4 manufacturer part numbers on file: SS845-1889567 PIECE 18 1-2IN (Naval Sea Systems Command), F-26534-C (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), 1889567PC18ASSYA1-2IN (Naval Sea Systems Command), 2620-925X2 PIECE 18 1-2IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
8 possible matches (shared part number, not a government interchangeability claim): 4820-01-059-1308, 4820-01-063-4840, 4820-01-115-6756. 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.
NSN 4820-01-058-7876 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.