The Piston,valve, cataloged under National Stock Number 4820-00-212-9970, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 29 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-212-9970 |
| Primary Part Number | 166293-219 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| 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 |
|---|---|
| 166293-219 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 187901PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 188082PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 184450PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 185891PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 187955PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 187682PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 1R3000A219 | 5/9 Secondary reference Ingersoll Rand Co |
| 166293-219 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187956PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 185890PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 187681APC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 166293-219 | 5/9 Secondary reference U.S. Government activity |
| 187699PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 188886PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 184451PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 187902PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 186297PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 187688PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 188088PC219 | 5/9 Secondary reference Ingersoll Rand Co |
| 184469PC219 | 5/9 Secondary reference Ingersoll Rand Co |
NSN 4820-00-212-9970 is a Piston,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-212-9970 has 1 manufacturer part number on file: 166293-219 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for 166293-219: Special Features: STL; 2.031 IN. LG; 1.000 IN. OD,W/SIX GROOVES 0.031 IN. W BY 0.031 IN. DP IN. 0 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.