The Seat,valve, cataloged under National Stock Number 4820-01-528-6700, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dante Valve Company. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-528-6700 |
| Primary Part Number | B3428-.75-HP |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Material | STEEL 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 |
|---|---|
| D1200HP-943 ITEM 11 | Dante Valve Company (USA) |
| B3428-.75-HP PRIMARY | Dante Valve Company (USA) |
| Reference | Meaning |
|---|---|
| B3428-.75-HP | 3/9 Design control — primary reference Danco Valve Company |
| D1200HP-943 ITEM 11 | 5/9 Secondary reference Danco Valve Company |
NSN 4820-01-528-6700 is a Seat,valve, manufactured by Dante Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-528-6700 has 2 manufacturer part numbers on file: D1200HP-943 ITEM 11 (Dante Valve Company), B3428-.75-HP (Dante Valve Company).
Key specifications for B3428-.75-HP: Special Features: VALVE, ANGLE RELIEF ( FORMERLY D50UU 1/2 IN X 1/2 IN IPS ) IN; Part Name Assigned by Controlling Agency: ADJUSTING RING; Material: STEEL 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.