The Valve,gate, cataloged under National Stock Number 4820-01-287-3994, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-287-3994 |
| Primary Part Number | 1S-2054B-02TS |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Stem Type | RISING |
| Connection Type | THREADED INTERNAL PIPE |
| Valve Size | 0.750 INCHES IN |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Nominal Thread Size | 0.750 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL UNS J03002 BODY |
| Material | STEEL CORROSION RESISTING STEM |
| Material | STEEL CORROSION RESISTING DISK |
| Thread Series Designator | NPT |
| 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 |
|---|---|
| 1S-2054B-02TS PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| S04-2054B-02TS AND 23-01Z | 5/9 Secondary reference Velan Valve Corp. |
| 23-01Z | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-287-3994 is a Valve,gate, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-287-3994 has 1 manufacturer part number on file: 1S-2054B-02TS (Velan Valve Corp.).
Key specifications for 1S-2054B-02TS: Inlet Relationship with Outlet: IDENTICAL; Stem Type: RISING; Connection Type: THREADED INTERNAL PIPE; Valve Size: 0.750 INCHES IN. 13 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.