The Diaphragm,actuator Valve,special, cataloged under National Stock Number 4820-01-129-3963, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Meggitt North Hollywood Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Bellofram Corporation (CAGE 01170); Meggitt North Hollywood Inc (CAGE 79318) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-129-3963 |
| Primary Part Number | 58667 |
| Item Name | Diaphragm,actuator Valve,special |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Meggitt North Hollywood Inc |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 58667 | Bellofram Corporation (USA) |
| 58667 PRIMARY | Meggitt North Hollywood Inc (USA) |
| Reference | Meaning |
|---|---|
| 58667 | 5/9 Secondary reference Rtx Corporation Div Pratt & Whitney |
| 10124597 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 58667 | 5/9 Secondary reference Diaphragm Industries Inc |
| 58667 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 4820-01-129-3963 is a Diaphragm,actuator Valve,special, manufactured by Meggitt North Hollywood Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-129-3963 has 2 manufacturer part numbers on file: 58667 (Bellofram Corporation), 58667 (Meggitt North Hollywood Inc).
2 possible matches (shared part number, not a government interchangeability claim): 3530-01-189-5643, 4820-01-286-9476. Verify interchangeability with system specifications before substitution.
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.