The Seat,valve, cataloged under National Stock Number 4820-00-075-0353, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Waltron Bull & Roberts, Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-075-0353 |
| Primary Part Number | 802842K |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Waltron Bull & Roberts, Llc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.094 INCHES NOMINAL IN |
| Flange Diameter | 0.688 INCHES NOMINAL IN |
| Body Outside Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | PLAIN FLANGED |
| Body Inside Diameter | 0.188 INCHES NOMINAL IN |
| Under Flange Height | 0.062 INCHES NOMINAL 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 |
|---|---|
| 802842K PRIMARY | Waltron Bull & Roberts, Llc (USA) |
| Reference | Meaning |
|---|---|
| D802842K | C/1 Advisory reference — outside the item-of-supply concept Leeds and Northrup Co a Unit of General Signal Corp |
| 802842K | 5/9 Secondary reference Leeds and Northrup Co a Unit of General Signal Corp |
NSN 4820-00-075-0353 is a Seat,valve, manufactured by Waltron Bull & Roberts, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-075-0353 has 1 manufacturer part number on file: 802842K (Waltron Bull & Roberts, Llc).
Key specifications for 802842K: Flange Seat to Disk End Height: 0.094 INCHES NOMINAL IN; Flange Diameter: 0.688 INCHES NOMINAL IN; Body Outside Diameter: 0.500 INCHES NOMINAL 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.