The Piston,valve, cataloged under National Stock Number 4820-00-212-9948, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 50 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-212-9948 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| 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 |
| Reference | Meaning |
|---|---|
| 166293-211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 185891PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 188406PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 188989PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 184450PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 186291PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 187681APC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 185413PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 1R3000-30-211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 185420PC211 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 184450PC211 | 5/9 Secondary reference Ingersoll Rand Co |
| 185755PC211 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 185413PC211 | 5/9 Secondary reference U.S. Government activity |
| 186297PC211 | 5/9 Secondary reference Ingersoll Rand Co |
| 188081APC211 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187688PC211 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188886PC211 | 5/9 Secondary reference U.S. Government activity |
| 188513PC211 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 188989PC211 | 5/9 Secondary reference Ingersoll Rand Co |
| 182534-211 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 4820-00-212-9948 is a Piston,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-00-212-9948: Special Features: NICKEL COPPER ALLOY,1.249 IN. DIA. 1.187 IN. LG,DOME TOP 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.