The Seat,valve, cataloged under National Stock Number 4820-01-546-8570, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-546-8570 |
| Primary Part Number | 8616 FIND 4CP |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT |
| Material | NICKEL ALLOY SEAT |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| 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 |
|---|---|
| 8616 FIND 4CP | Naval Inventory Control Point Mechanicsburg (USA) |
| A7440.002.128CP | Naval Inventory Control Point Mechanicsburg (USA) |
| A7440.002.128 | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 8616 | D/9 Drawing number reference only Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| 8616 FIND 4 | 3/1 Design control — primary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
NSN 4820-01-546-8570 is a Seat,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-546-8570 has 3 manufacturer part numbers on file: 8616 FIND 4CP (Naval Inventory Control Point Mechanicsburg), A7440.002.128CP (Naval Inventory Control Point Mechanicsburg), A7440.002.128 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
Key specifications for 8616 FIND 4CP: Criticality Code Justification: ZZZY; Material Document and Classification: QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE SEAT; End Item Identification: VALVE, RELIEF 1.50NPS; 4820-01-546-8567; Material: NICKEL ALLOY SEAT. 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.