The Disk,valve, cataloged under National Stock Number 4820-00-142-2781, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 18 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-142-2781 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Pressure Rating | 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 2.594 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 1.500 INCHES NOMINAL IN |
| Media for Which Designed | WATER |
| Material | RUBBER |
| 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 |
|---|---|
| D28342 | C/1 Advisory reference — outside the item-of-supply concept Hunt Valve Company, Inc. |
| D28342 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
| CV9S4902-96ALT5PC7341-12 | 5/9 Secondary reference U.S. Government activity |
| CV9S4902-96ALT5PC7341-12 | 5/1 Secondary reference Naval Sea Systems Command |
| 185487PC7341-12 | 5/9 Secondary reference U.S. Government activity |
| 185487PC7341-12 | 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 |
| 186417PC7341-12 | 5/9 Secondary reference U.S. Government activity |
| 185414PC7341-12 | 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 |
| 186417PC7341-12 | 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 |
| 185487PC7341-12 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 186417PC7341-12 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185414PC7341-12 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 185487PC7341-12 | 5/9 Secondary reference Ingersoll Rand Co |
| D28342 | 5/9 Secondary reference Ingersoll Rand Co |
| D28342 | 5/9 Secondary reference Hammel Dahl Inc |
| 186417PC7341-12 | 5/9 Secondary reference Ingersoll Rand Co |
| 185414PC7341-12 | 5/9 Secondary reference Ingersoll Rand Co |
| 185414PC7341-12 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-00-142-2781 is a Disk,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4820-00-639-9078. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-142-2781: Overall Height: 0.344 INCHES NOMINAL IN; Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 2.594 INCHES NOMINAL IN; Style Designator: PLAIN. 6 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.