The Valve,gate, cataloged under National Stock Number 4820-01-458-7890, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-458-7890 |
| Primary Part Number | B12-1054B-02TS 88530-12 |
| 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 | BUTT WELD TUBE |
| Nominal Outside Diameter Tube Accommodated | 4.000 INCHES IN |
| Valve Size | 4.000 INCHES IN |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Bonnet Attachment Method | BOLTED |
| Pressure Class | ERR-060 |
| Material | STEEL UNS J03002 DISK |
| Material | STEEL UNS K03504 BODY |
| Material | STEEL COMP 410 STEM |
| Material | STEEL UNS J03002 SEAT |
| 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 |
|---|---|
| B12-1054B-02TS 88530-12 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| MILV18110ANSICL300LBBTWLD 4IN | 5/9 Secondary reference U.S. Government activity |
| 88530-12 | D/9 Drawing number reference only Velan Valve Corp. |
NSN 4820-01-458-7890 is a Valve,gate, manufactured by Velan Valve Corp., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-458-7890 has 1 manufacturer part number on file: B12-1054B-02TS 88530-12 (Velan Valve Corp.).
Key specifications for B12-1054B-02TS 88530-12: Inlet Relationship with Outlet: IDENTICAL; Stem Type: RISING; Connection Type: BUTT WELD TUBE; Nominal Outside Diameter Tube Accommodated: 4.000 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.