The Disk,valve, cataloged under National Stock Number 4820-00-446-3165, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Grove Valve Operations. Government technical data includes 5 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. 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 | 4820-00-446-3165 |
| Primary Part Number | 101-01558 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Grove Valve Operations |
| Status | ACTIVE |
| Shank Diameter | 0.188 INCHES NOMINAL IN |
| Flange Diameter | 0.188 INCHES NOMINAL IN |
| Style Designator | POPPET |
| Seat Angle | 60.0 DEGREES NOMINAL |
| Material | PLASTIC |
| 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 |
|---|---|
| 101-01558 PRIMARY | Grove Valve Operations (USA) |
NSN 4820-00-446-3165 is a Disk,valve, manufactured by Grove Valve Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-446-3165 has 1 manufacturer part number on file: 101-01558 (Grove Valve Operations).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-127-8204, 4820-01-260-4317. Verify interchangeability with system specifications before substitution.
Key specifications for 101-01558: Shank Diameter: 0.188 INCHES NOMINAL IN; Flange Diameter: 0.188 INCHES NOMINAL IN; Overall Height: 0.293 INCHES NOMINAL IN; Style Designator: POPPET. 5 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.