The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-287-3580, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-287-3580 |
| Primary Part Number | 30/3.4.1ALT.10 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Flow Control Device | DISK, BEVEL SEAT, TOP GUIDED AND DISK, BEVEL SEAT, BOTTOM GUIDED |
| Valve Stem Design | SINGLE SEAT |
| Renewable Seat Ring Type | THREADED |
| Second End Relationship with First End | IDENTICAL |
| Remote Actuation Method | PISTON |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 9.750 INCHES NOMINAL IN |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Flange Thickness | 0.688 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 7.000 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| First End Bolt Hole Diameter | 0.750 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 5.500 INCHES NOMINAL IN |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 10.0 TO 130.0 CAMERA MOUNT |
| Manual Control Method | WHEEL |
| Valve Loading Method | SPRING |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | STEEL COMP 420 FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING AND COBALT ALLOY SEAT |
| Media for Which Designed | STEAM |
| Maximum Inlet Pressure Rating | ERR-060 |
| Furnished Items | INTERNAL PILOT VALVE |
| 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 |
|---|---|
| 30/3.4.1ALT.10 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| L223FALT8 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-00-287-3580 is a Valve,regulating,fluid Pressure, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-287-3580 has 1 manufacturer part number on file: 30/3.4.1ALT.10 (Leslie Controls, Inc. Dba Leslie Controls Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-00-595-3143, 4820-01-447-3974. Verify interchangeability with system specifications before substitution.
Key specifications for 30/3.4.1ALT.10: First End Bolt Hole Quantity: 4; Flow Control Device: DISK, BEVEL SEAT, TOP GUIDED AND DISK, BEVEL SEAT, BOTTOM GUIDED; Valve Stem Design: SINGLE SEAT; Renewable Seat Ring Type: THREADED. 26 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.