The Valve,relief, cataloged under National Stock Number 4820-01-052-1941, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kidde Technologies, Inc Div Kidde Aerospace and Defense. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-052-1941 |
| Primary Part Number | A403700-1 |
| Item Name | Valve,relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kidde Technologies, Inc Div Kidde Aerospace and Defense |
| Status | ACTIVE |
| General Characteristics Item Description | 1.463 IN. LG; MEDIUM MONOBROMOTRIFLUOROMETHANE PER MIL-B-12218 (FREON 1301 LIQUID OR VAPOR); BURST PRESSURE 1240 PSIG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A403700-1 PRIMARY | Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA) |
| 822507-2 PRIMARY | Kidde Technologies, Inc Div Kidde Aerospace and Defense (USA) |
| Reference | Meaning |
|---|---|
| 4820PL1626902 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 3R2054 | 3/2 Design control — primary reference U.S. Government activity |
| 822507-1 | 5/9 Secondary reference Kidde Technologies, Inc Div Kidde Aerospace and Defense |
| 4820PL0655284 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 3R1810 | 5/9 Secondary reference U.S. Government activity |
| 822507-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-052-1941 is a Valve,relief, manufactured by Kidde Technologies, Inc Div Kidde Aerospace and Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-052-1941 has 2 manufacturer part numbers on file: A403700-1 (Kidde Technologies, Inc Div Kidde Aerospace and Defense), 822507-2 (Kidde Technologies, Inc Div Kidde Aerospace and Defense).
Key specifications for A403700-1: General Characteristics Item Description: 1.463 IN. LG; MEDIUM MONOBROMOTRIFLUOROMETHANE PER MIL-B-12218 (FREON 1301 LIQUID OR VAPOR); BURST PRESSURE 1240 PSIG IN; End Item Identification: ACFT,TYPE F-16A,B,C,D A. 1 specification is 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.
NSN 4820-01-052-1941 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.