The Separator,pipeline, cataloged under National Stock Number 4730-01-228-4378, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-228-4378 |
| Primary Part Number | SEP-144 |
| Item Name | Separator,pipeline |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Pressure Rating | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| Connection Thread Series | NPT |
| Distance Between Inlet Face and Outlet Face Connections | 6.000 INCHES NOMINAL IN |
| Drain Hole Connection Nominal Pipe Size | 1.000 INCHES IN |
| Drain Hole Connection Type | THREADED |
| Inlet Connection Type | THREADED |
| Flow Type | HORIZONTAL |
| Material | COPPER ALLOY |
| Service Type for Which Designed | COMPRESSED AIR MOISTURE SEPARATION |
| Thread Size and Series/type Designator | 1.250-11-1/2 NPT INLET |
| Thread Size and Series/type Designator | 1.250-11-1/2 NPT OUTLET |
| Furnished Items and Quantity | VENT PLUG 1 |
| Outlet Connection Type | THREADED |
| 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 |
|---|---|
| HL21074 PIECE 387 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| SEP-144 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| SEP-144 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| HL21074 PIECE 387 | 5/9 Secondary reference U.S. Government activity |
| SEP-144 | 3/9 Design control — primary reference U.S. Government activity |
| 8503-12 | 5/9 Secondary reference Wright Austin Co |
| 8503-12-1/4 TYP | C/1 Advisory reference — outside the item-of-supply concept Wright Austin Co |
| 8503-12-1 1/4IN-TYPE T | 5/9 Secondary reference Wright Austin Co |
| HL21074 PIECE 387 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 4730-01-228-4378 is a Separator,pipeline, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-228-4378 has 2 manufacturer part numbers on file: HL21074 PIECE 387 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), SEP-144 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
1 possible match (shared part number, not a government interchangeability claim): 5110-01-585-7934. Verify interchangeability with system specifications before substitution.
Key specifications for SEP-144: Pressure Rating: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; Connection Thread Series: NPT; Distance Between Inlet Face and Outlet Face Connections: 6.000 INCHES NOMINAL IN; Drain Hole Connection Nominal Pipe Size: 1.000 INCHES IN. 13 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.