The Seat,relief Valve, cataloged under National Stock Number 4820-01-008-9713, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Meggitt Safety Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Seat,relief Valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Meggitt Safety Systems Inc (CAGE 05167) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-008-9713 |
| Primary Part Number | 140084 |
| Item Name | Seat,relief Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Meggitt Safety Systems Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 140084 PRIMARY | Meggitt Safety Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 140084 | 5/9 Secondary reference Meggitt Safety Systems, Inc. Dba Meggitt Control Systems-Ventura County |
NSN 4820-01-008-9713 is a Seat,relief Valve, manufactured by Meggitt Safety Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-008-9713 has 1 manufacturer part number on file: 140084 (Meggitt Safety Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3110-01-027-1915, 4920-01-389-8928. Verify interchangeability with system specifications before substitution.
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.