The Cage,valve, cataloged under National Stock Number 4820-00-216-7858, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 35 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-216-7858 |
| Primary Part Number | N451PC223 |
| Item Name | Cage,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Inside Diameter | 2.000 INCHES NOMINAL IN |
| 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 |
|---|---|
| N451PC223 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| N411PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| N475PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| N439PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| N475PC223 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| N515PC223 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| N440PC223 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| N476PC223 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| N451PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| N567PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| N515PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 4A801 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| N514PC223 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| N410PC223 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 4A801 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| N477PC223 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| N565PC223 | 5/9 Secondary reference Ingersoll Rand Co |
| 4A801 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| N439PC223 | 5/9 Secondary reference Ingersoll Rand Co |
| 4A801 | 5/9 Secondary reference U.S. Government activity |
| N476PC223 | 5/9 Secondary reference Ingersoll Rand Co |
| N515PC223 | 5/9 Secondary reference U.S. Government activity |
| 4A801 | 5/9 Secondary reference Ingersoll Rand Co |
| N441PC223 | 5/9 Secondary reference U.S. Government activity |
| N410PC223 | 5/9 Secondary reference U.S. Government activity |
| N514PC223 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| N566PC223 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| N410PC223 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| IR10-600T223 | 5/9 Secondary reference U.S. Government activity |
| N441PC223 | 5/9 Secondary reference U.S. Government activity |
| N475PC223 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| N451PC223 | 5/9 Secondary reference U.S. Government activity |
| N515PC223 | 5/9 Secondary reference Ingersoll Rand Co |
| N410PC223 | 5/9 Secondary reference Ingersoll Rand Co |
| N477PC223 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-216-7858 is a Cage,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-216-7858 has 15 manufacturer part numbers on file: N451PC223 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), N411PC223 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), N475PC223 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), N439PC223 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), N475PC223 (Curtiss-Wright Electro-Mechanical Corporation Div Epd) and 10 more.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-215-3334. Verify interchangeability with system specifications before substitution.
Key specifications for N451PC223: Outside Diameter: 2.250 INCHES NOMINAL IN; Overall Length: 2.438 INCHES NOMINAL IN; Inside Diameter: 2.000 INCHES NOMINAL IN. 2 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.