The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-00-487-9337, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-487-9337 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Outside Diameter | 11.000 INCHES NOMINAL IN |
| Taper Minor Diameter | 6.250 INCHES NOMINAL IN |
| Style Designator | SPECIAL SHAPED |
| Taper Major Diameter | 8.313 INCHES NOMINAL IN |
| Material Thickness | 0.095 INCHES NOMINAL IN |
| Bolt Hole Quantity | 12 |
| Bolt Circle Diameter | 9.938 INCHES NOMINAL IN |
| Center Hole Diameter | 0.500 INCHES NOMINAL IN |
| Material | RUBBER CHLOROPRENE CLASS CR |
| Hole Diameter | 0.345 INCHES NOMINAL IN |
| 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 |
|---|---|
| 005262-011-686 | 5/9 Secondary reference Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div |
| N1142-1PC64 | 5/9 Secondary reference Dresser Industries Inc Masoneilan North American Opns Dresser Valve and Controls Div |
| 5262-16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-487-9337 is a Diaphragm,actuator Valve,special, classified under FSC 4820, Valves, Nonpowered. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-708-3063. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-00-487-9337: Overall Height: 1.165 INCHES NOMINAL IN; Outside Diameter: 11.000 INCHES NOMINAL IN; Taper Minor Diameter: 6.250 INCHES NOMINAL IN; Style Designator: SPECIAL SHAPED. 10 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.