The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-071-9906, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-071-9906 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Shank Diameter | 2.125 INCHES NOMINAL IN |
| Outside Diameter | 4.250 INCHES NOMINAL IN |
| Style Designator | SPECIAL SHAPED |
| Material Thickness | 0.055 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| C90050FA013 | 3/2 Design control — primary reference U.S. Government activity |
| H90077A001ITEM15B | 5/2 Secondary reference U.S. Government activity |
| C90050FA103 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4820-01-071-9906 is a Diaphragm,actuator Valve,special, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-071-9906: Shank Diameter: 2.125 INCHES NOMINAL IN; Overall Height: 1.600 INCHES NOMINAL IN; Outside Diameter: 4.250 INCHES NOMINAL IN; Style Designator: SPECIAL SHAPED. 5 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.