The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-698-6308, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Meggitt Troy Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-698-6308 |
| Primary Part Number | G476423 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Meggitt Troy Inc |
| Status | ACTIVE |
| Outside Diameter | 1.781 INCHES NOMINAL IN |
| Style Designator | FLAT |
| Material Thickness | 0.012 INCHES NOMINAL IN |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 1.406 INCHES NOMINAL IN |
| Material | RUBBER AND COPPER ALLOY |
| Hole Diameter | 0.175 INCHES NOMINAL 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 |
|---|---|
| G476423 PRIMARY | Meggitt Troy Inc (USA) |
| 560H1-3577 | Kurz & Root Generator Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2990006986308 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| G476423-78385 | 5/9 Secondary reference Demarkus Corp Refrigeration Engineering Corp |
NSN 4820-00-698-6308 is a Diaphragm,valve,flat, manufactured by Meggitt Troy Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-698-6308 has 2 manufacturer part numbers on file: G476423 (Meggitt Troy Inc), 560H1-3577 (Kurz & Root Generator Company, Llc).
Key specifications for G476423: Outside Diameter: 1.781 INCHES NOMINAL IN; Style Designator: FLAT; Material Thickness: 0.012 INCHES NOMINAL IN; Bolt Hole Quantity: 6. 7 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.