The Seat,valve, cataloged under National Stock Number 4820-01-177-5185, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-177-5185 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.563 INCHES NOMINAL IN |
| Style Designator | FAUCET |
| Body Inside Diameter | 0.375 INCHES NOMINAL IN |
| Under Flange Height | 1.813 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 |
| Reference | Meaning |
|---|---|
| 134B243AA1 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| E-3288508 PIECE 59 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 134B243AA1 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 134B243AA | D/9 Drawing number reference only General Electric Co Naval and Drive Turbine Systems Dept |
| 134B243AA1 | 3/9 Design control — primary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| E-3288408 PIECE 59 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
| 134B243AAP1 | C/1 Advisory reference — outside the item-of-supply concept General Electric Co Naval and Drive Turbine Systems Dept |
NSN 4820-01-177-5185 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-177-5185: Flange Seat to Disk End Height: 0.563 INCHES NOMINAL IN; Style Designator: FAUCET; Body Inside Diameter: 0.375 INCHES NOMINAL IN; Under Flange Height: 1.813 INCHES NOMINAL IN. 4 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.