The Valve,vacuum Breaking, cataloged under National Stock Number 4820-01-507-2909, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hydraulics International Inc. Government technical data includes 1 specification, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-507-2909 |
| Primary Part Number | 96159-242-1 |
| Item Name | Valve,vacuum Breaking |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hydraulics International Inc |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 96159-242-1 PRIMARY | Hydraulics International Inc (USA) |
NSN 4820-01-507-2909 is a Valve,vacuum Breaking, manufactured by Hydraulics International Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-507-2909 has 1 manufacturer part number on file: 96159-242-1 (Hydraulics International Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-571-5561. Verify interchangeability with system specifications before substitution.
Key specifications for 96159-242-1: Criticality Code Justification: AGAV; Special Features: PRE-PROVISIONED NAVY ITEM, NAVICP PHIL IS POE; Part Name Assigned by Controlling Agency: VACUUM RELIEF VALVE; End Item Identification: CONTRACTOR SUPPORTED ITEM; E-NSN ISIL. 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.
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.