The Seat,valve, cataloged under National Stock Number 4820-00-677-2111, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Joy Global Underground Mining Llc. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-677-2111 |
| Primary Part Number | 43788W |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Joy Global Underground Mining Llc |
| Status | ACTIVE |
| Body Outside Diameter | 2.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 1.356 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 43788W | Joy Global Underground Mining Llc (USA) |
| Reference | Meaning |
|---|---|
| 43788W | 3/9 Design control — primary reference U.S. Government activity |
NSN 4820-00-677-2111 is a Seat,valve, manufactured by Joy Global Underground Mining Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-677-2111 has 1 manufacturer part number on file: 43788W (Joy Global Underground Mining Llc).
Key specifications for 43788W: Overall Height: 0.032 INCHES NOMINAL IN; Body Outside Diameter: 2.500 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 1.356 INCHES NOMINAL IN. 5 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.