The Disk,valve, cataloged under National Stock Number 4820-00-142-2081, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 6 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-142-2081 |
| Primary Part Number | D25211 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Pressure Rating | 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Outside Diameter | 2.008 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 1.062 INCHES NOMINAL IN |
| Media for Which Designed | WATER, SALT |
| 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 |
| Part Number | Manufacturer |
|---|---|
| D25211 PRIMARY | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| D25211 | 3/9 Design control — primary reference Hunt Valve Company Inc Dba Union Flonetics |
| D25211 | 5/9 Secondary reference Hammel Dahl Inc |
NSN 4820-00-142-2081 is a Disk,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-142-2081 has 1 manufacturer part number on file: D25211 (Hunt Valve Company, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4330-01-306-0451, 4330-01-306-6430. Verify interchangeability with system specifications before substitution.
Key specifications for D25211: Overall Height: 0.344 INCHES NOMINAL IN; Pressure Rating: 100.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Outside Diameter: 2.008 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.