The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-032-8461, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 24 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4820-00-032-8461 |
| Primary Part Number | 411590 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Flow Control Device | CONE, TOP GUIDED |
| Valve Stem Design | SINGLE SEAT |
| Renewable Seat Ring Type | THREADED |
| Second End Relationship with First End | IDENTICAL |
| Body Style | TEE |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Seat Angle in Deg | 60.0 |
| First End Thread Class | 2B |
| Third End Relationship with Preceding Ends | NOT IDENTICAL WITH FIRST OR SECOND END |
| First End Style Designator | INVERTED FLARE |
| End Connection Quantity | 3 |
| Third End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Valve Loading Method | SPRING |
| Third End Thread Direction | RIGHT-HAND |
| Third End Thread Class | 2A A |
| First End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Material | STEEL SEAT |
| Material | STEEL FLOW CONTROL DEVICE |
| Media for Which Designed | HYDRAULIC FLUID, PETROLEUM BASE |
| Third End Seat Angle in Deg | 37.0 |
| Third End Style Designator | FLARED |
| Thread Size and Series/type Designator | 9/16-18 UNF FIRST END |
| Thread Size and Series/type Designator | 9/16-18 UNF THIRD END |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| 411590 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 411590 | 3/9 Design control — primary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
NSN 4820-00-032-8461 is a Valve,regulating,fluid Pressure, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-032-8461 has 1 manufacturer part number on file: 411590 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
2 possible matches (shared part number, not a government interchangeability claim): 2520-00-712-1270, 5355-00-721-8584. Verify interchangeability with system specifications before substitution.
Key specifications for 411590: Flow Control Device: CONE, TOP GUIDED; Valve Stem Design: SINGLE SEAT; Renewable Seat Ring Type: THREADED; Second End Relationship with First End: IDENTICAL. 24 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.