The Seat,valve, cataloged under National Stock Number 4820-01-628-0218, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Parker Hannifin Corporation Div Village Marine Tech. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-628-0218 |
| Primary Part Number | 8020-51-4 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Parker Hannifin Corporation Div Village Marine Tech |
| Status | ACTIVE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE OVERALL |
| 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 |
|---|---|
| 8020-51-4 PRIMARY | Parker Hannifin Corporation Div Village Marine Tech (USA) |
| M3589 PC NO 3 | Parker Hannifin Corporation Div Village Marine Tech (USA) |
| Reference | Meaning |
|---|---|
| M3589 | D/9 Drawing number reference only Parker Hannifin Corporation Div Village Marine Tech |
NSN 4820-01-628-0218 is a Seat,valve, manufactured by Parker Hannifin Corporation Div Village Marine Tech, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-628-0218 has 2 manufacturer part numbers on file: 8020-51-4 (Parker Hannifin Corporation Div Village Marine Tech), M3589 PC NO 3 (Parker Hannifin Corporation Div Village Marine Tech).
2 possible matches (shared part number, not a government interchangeability claim): 5315-01-628-0447, 4820-01-684-1834. Verify interchangeability with system specifications before substitution.
Key specifications for 8020-51-4: Special Features: 3WAY BALL VALVE, 1NPS BALL, .5/.75 NPS; Part Name Assigned by Controlling Agency: SEAT, VALVE, 1.00 NPS; Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL. 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.