The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-580-6928, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Imi Cash Valve Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4820-01-580-6928 |
| Primary Part Number | 01582 |
| Item Name | Diaphragm,valve,flat |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Imi Cash Valve Inc |
| Status | ACTIVE |
| Style Designator | FLAT |
| Material Document and Classification | BRONZE MFR REF SINGLE MATERIAL RESPONSE |
| Media for Which Designed | STEAM |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 12396 REV F ITEM 8 | Imi Cash Valve Inc (USA) |
| 01582 PRIMARY | Imi Cash Valve Inc (USA) |
NSN 4820-01-580-6928 is a Diaphragm,valve,flat, manufactured by Imi Cash Valve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-580-6928 has 2 manufacturer part numbers on file: 12396 REV F ITEM 8 (Imi Cash Valve Inc), 01582 (Imi Cash Valve Inc).
1 possible match (shared part number, not a government interchangeability claim): 6550-01-608-4545. Verify interchangeability with system specifications before substitution.
Key specifications for 01582: Style Designator: FLAT; Material Document and Classification: BRONZE MFR REF SINGLE MATERIAL RESPONSE; Media for Which Designed: STEAM; Part Name Assigned by Controlling Agency: DIAPHRAGM. 4 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.