The Disk,valve, cataloged under National Stock Number 4820-01-093-2832, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-093-2832 |
| Primary Part Number | 2620-925X1 PC19 1IN |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Shoulder Width | 0.220 INCHES NOMINAL IN |
| Shoulder Height | 0.080 INCHES NOMINAL IN |
| Style Designator | PLUG |
| Seat Angle | 15.0 DEGREES NOMINAL |
| Nominal Thread Size | 0.938 INCHES IN |
| Thread Class | 2A A |
| Material | STEEL CORROSION RESISTING |
| Thread Series Designator | UNEF |
| 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 |
|---|---|
| 2620-925X1 PC19 1IN PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| Reference | Meaning |
|---|---|
| 845-1889566PC19 1IN | 5/2 Secondary reference U.S. Government activity |
| 2620-925X1 PC19 1IN | 5/9 Secondary reference U.S. Government activity |
| 845-1889566 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-093-2832 is a Disk,valve, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-093-2832 has 1 manufacturer part number on file: 2620-925X1 PC19 1IN (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
Key specifications for 2620-925X1 PC19 1IN: Overall Height: 0.665 INCHES NOMINAL IN; Shoulder Width: 0.220 INCHES NOMINAL IN; Shoulder Height: 0.080 INCHES NOMINAL IN; Style Designator: PLUG. 8 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.