The Disk,valve, cataloged under National Stock Number 4820-01-320-3370, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-320-3370 |
| Primary Part Number | 528P322 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 528P322 | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| 528P322CP | Naval Inventory Control Point Mechanicsburg (USA) |
| 970P193 PC 4CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 528P322 | 3/9 Design control — primary reference Grimes Aerospace Co |
| 970P193 PC 4 | 5/9 Secondary reference Grimes Aerospace Co |
NSN 4820-01-320-3370 is a Disk,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-320-3370 has 3 manufacturer part numbers on file: 528P322 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 528P322CP (Naval Inventory Control Point Mechanicsburg), 970P193 PC 4CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 528P322: Criticality Code Justification: ZZZY; End Item Identification: PUMP UNIT,WATER,RECIPROCATING; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 2 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.