The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-277-1424, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Raytheon Co ESD Long Island Div. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4820-01-277-1424 |
| Primary Part Number | 0460001-5 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Raytheon Co ESD Long Island Div |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Renewable Seat Ring Type | ANY ACCEPTABLE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Seat Angle in Deg | 37.0 |
| First End Thread Class | 3A A |
| First End Style Designator | FLARED |
| Material Document and Classification | UNABLE TO DECODE |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED EXTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.250 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2014 BODY |
| Material | STEEL CORROSION RESISTING STEM |
| Material | RUBBER CHLOROPRENE CLASS CR PACKING |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 7/16-20 UNIFIED NATIONAL JOINT (UNJ) FIRST END |
| Filter | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4820-01-277-1424 is a Valve,regulating,fluid Pressure, manufactured by Raytheon Co ESD Long Island Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-277-1424 has 3 manufacturer part numbers on file: 0460001-5 (Raytheon Co ESD Long Island Div), 15580-5 (The Entwistle Company Llc), 0460001 (Raytheon Co ESD Long Island Div).
2 possible matches (shared part number, not a government interchangeability claim): 7025-01-623-8257, 5365-01-644-3831. Verify interchangeability with system specifications before substitution.
Key specifications for 0460001-5: Flow Control Device: DISK; Renewable Seat Ring Type: ANY ACCEPTABLE; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 20 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 4820-01-277-1424 has DEMIL Code Q. 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.