The Valve,bleeder,hydraulic System, cataloged under National Stock Number 4820-00-232-1491, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-232-1491 |
| Item Name | Valve,bleeder,hydraulic System |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| FSC Application Data | VALVE AND CONTROL ASSEMBLY,COMPRESSOR BLEED SYSTEM |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Valve Operation Method | AIRAIR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 638012 | 3/9 Design control — primary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 638012 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 4820-00-232-1491 is a Valve,bleeder,hydraulic System, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-232-1491: FSC Application Data: VALVE AND CONTROL ASSEMBLY,COMPRESSOR BLEED SYSTEM; Special Features: 5 PORTS,1 MTG PAD,ENGAGES SPLINE SHAFT OF VALVE5 PORTS,1 MTG PAD,ENGAGES SPLINE SHAFT OF VALVE; Media for Which Designed: AIR SINGLE RESPONSE; Part Name Assigned by Controlling Agency: CONTROL,BLEED AIRCONTROL,BLEED AIR. 3 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.
NSN 4820-00-232-1491 has DEMIL Code B. 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.