The Seat,valve, cataloged under National Stock Number 4820-00-188-8286, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-188-8286 |
| Primary Part Number | 92398-300 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.074 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Flange Diameter | 0.230 INCHES MINIMUM AND 0.232 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.132 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.078 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Under Flange Height | 0.023 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 92398-300 PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| Reference | Meaning |
|---|---|
| 92398-800 | 5/9 Secondary reference Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok |
NSN 4820-00-188-8286 is a Seat,valve, manufactured by Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-188-8286 has 1 manufacturer part number on file: 92398-300 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok).
Key specifications for 92398-300: Flange Seat to Disk End Height: 0.074 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Flange Diameter: 0.230 INCHES MINIMUM AND 0.232 INCHES MAXIMUM IN; Body Outside Diameter: 0.132 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Style Designator: PLAIN FLANGED. 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.