The Disk,valve, cataloged under National Stock Number 4820-00-494-5100, 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 9 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-494-5100 |
| Primary Part Number | 220117 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Grove Valve Operations |
| Status | ACTIVE |
| Shank Diameter | 0.372 INCHES NOMINAL IN |
| Flange Seat to Disk End Height | 1.657 INCHES NOMINAL IN |
| Flange Diameter | 0.622 INCHES NOMINAL IN |
| Pressure Rating | 3600.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Temp Rating | 65.0 FAHRENHEIT MINIMUM AND 165.0 FAHRENHEIT MAXIMUM DEGF |
| Style Designator | CONE CHECK |
| Seat Angle | 45.0 DEGREES NOMINAL |
| Under Flange Height | 0.125 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| 220117 PRIMARY | Grove Valve Operations (USA) |
| N622PC23 PRIMARY | Grove Valve Operations (USA) |
| N731RCPC23 | Grove Valve Operations (USA) |
| N731AC | Grove Valve Operations (USA) |
| N657PC23 PRIMARY | Grove Valve Operations (USA) |
| CD95PCLN3 | Grove Valve Operations (USA) |
| N755PC23 | Grove Valve Operations (USA) |
| Reference | Meaning |
|---|---|
| 564-4900-1184266PC23 | 3/2 Design control — primary reference U.S. Government activity |
| 313-3801-795644A1PCV13VALVE | 3/2 Design control — primary reference U.S. Government activity |
| 3285223RC | 5/2 Secondary reference U.S. Government activity |
| 313-3801-795632A2PCV13VALVE | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-494-5100 is a Disk,valve, manufactured by Grove Valve Operations, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-494-5100 has 7 manufacturer part numbers on file: 220117 (Grove Valve Operations), N622PC23 (Grove Valve Operations), N731RCPC23 (Grove Valve Operations), N731AC (Grove Valve Operations), N657PC23 (Grove Valve Operations) and 2 more.
3 possible matches (shared part number, not a government interchangeability claim): 7643-01-405-1971, 6515-01-428-7649, 4730-01-607-1512. Verify interchangeability with system specifications before substitution.
Key specifications for 220117: Shank Diameter: 0.372 INCHES NOMINAL IN; Flange Seat to Disk End Height: 1.657 INCHES NOMINAL IN; Flange Diameter: 0.622 INCHES NOMINAL IN; Overall Height: 1.782 INCHES NOMINAL IN. 9 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.