The Valve,piston, cataloged under National Stock Number 4320-00-398-7883, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-398-7883 |
| Primary Part Number | 10449P |
| Item Name | Valve,piston |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL;5.746 IN.O/A LG;1.746 IN.O/A OD;0.536 IN.BORE DIA;FOUR GROOVES 0.440 IN.W BY 0.137 IN.DEEP;DONSISTS OF FOUR RINGS 1.660 IN.ID,1.845 IN.OD,0.452 IN.H,0.080 IN.THICK 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 |
|---|---|
| 10449P PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 10449P | 3/9 Design control — primary reference U.S. Government activity |
NSN 4320-00-398-7883 is a Valve,piston, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-398-7883 has 1 manufacturer part number on file: 10449P (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 10449P: General Characteristics Item Description: STEEL;5.746 IN.O/A LG;1.746 IN.O/A OD;0.536 IN.BORE DIA;FOUR GROOVES 0.440 IN.W BY 0.137 IN.DEEP;DONSISTS OF FOUR RINGS 1.660 IN.ID,1.845 IN.OD,0.452 IN.H,0.080 IN.THICK IN. 1 specification is 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.