The Valve,gate, cataloged under National Stock Number 4820-01-285-3540, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Inc. Government technical data includes 14 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-285-3540 |
| Primary Part Number | 353 4IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Flange Face Design | RAISED |
| Stem Type | NONRISING |
| Connection Type | FLANGE, ROUND W/O HOLES |
| Valve Size | 4.000 INCHES IN |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Flange Diameter | 9.000 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| Face to Face Distance | 9.000 INCHES IN |
| Material | STEEL BODY |
| Material | STEEL DISK |
| Material | STEEL SEAT |
| Material | STEEL STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| F-46663AND353 4IN | Flowserve Inc (USA) |
| 353 4IN PRIMARY | Flowserve Inc (USA) |
| Reference | Meaning |
|---|---|
| F-46663 | D/9 Drawing number reference only Flowserve Inc |
NSN 4820-01-285-3540 is a Valve,gate, manufactured by Flowserve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-285-3540 has 2 manufacturer part numbers on file: F-46663AND353 4IN (Flowserve Inc), 353 4IN (Flowserve Inc).
Key specifications for 353 4IN: Inlet Relationship with Outlet: IDENTICAL; Flange Face Design: RAISED; Stem Type: NONRISING; Connection Type: FLANGE, ROUND W/O HOLES. 14 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.