The Valve Anti-Suction, cataloged under National Stock Number 4820-01-253-7731, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Raytheon Company. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-253-7731 |
| Primary Part Number | 40A14116-2 |
| Item Name | Valve Anti-Suction |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Raytheon Company |
| Status | ACTIVE |
| 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 |
|---|---|
| 40A14116-2 PRIMARY | Raytheon Company (USA) |
| Reference | Meaning |
|---|---|
| 40A14116-2 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| 70144-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-253-7731 is a Valve Anti-Suction, manufactured by Raytheon Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-253-7731 has 1 manufacturer part number on file: 40A14116-2 (Raytheon Company).
2 possible matches (shared part number, not a government interchangeability claim): 3030-01-549-3182, 2090-01-574-6034. Verify interchangeability with system specifications before substitution.
Key specifications for 40A14116-2: End Item Identification: PACER SPECIAL. 0 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.