The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-374-5673, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Proconex Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-374-5673 |
| Primary Part Number | 1D387036012 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Proconex Inc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 1D387036012 | Fisher Controls Co Inc (USA) |
| LPPAN4683CBI11 KEY 3E | Proconex Inc (USA) |
| 1D387036012 PRIMARY | Proconex Inc (USA) |
| Reference | Meaning |
|---|---|
| LPPAN4683CBI11 | D/9 Drawing number reference only Proconex Inc |
NSN 4820-01-374-5673 is a Diaphragm,valve,flat, manufactured by Proconex Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-374-5673 has 3 manufacturer part numbers on file: 1D387036012 (Fisher Controls Co Inc), LPPAN4683CBI11 KEY 3E (Proconex Inc), 1D387036012 (Proconex Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-374-6926, 4820-01-374-9498. Verify interchangeability with system specifications before substitution.
Key specifications for 1D387036012: Material: STEEL CORROSION RESISTING. 1 specification is 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.