The Valve,ball, cataloged under National Stock Number 4820-01-649-5477, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Gross Mechanical Laboratories Inc. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-649-5477 |
| Primary Part Number | BV-1500 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Gross Mechanical Laboratories Inc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 1.50 INCHES ALL ENDS IN |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Bolt Circle Nominal Diameter | 4.50 INCHES SECOND END IN |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Bolt Hole Nominal Diameter | 0.3125 INCHES SECOND END IN |
| Valve Size | 1.50 INCHES IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.50 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 3 SECOND END |
| Face to Face Distance | 4.63 INCHES IN |
| Material | BRONZE BODY |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Thread Series Designator | NPT FIRST END |
| 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 |
|---|---|
| BV-1500 PRIMARY | Gross Mechanical Laboratories Inc (USA) |
NSN 4820-01-649-5477 is a Valve,ball, manufactured by Gross Mechanical Laboratories Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-649-5477 has 1 manufacturer part number on file: BV-1500 (Gross Mechanical Laboratories Inc).
Key specifications for BV-1500: Nominal Pipe Size Accommodated: 1.50 INCHES ALL ENDS IN; Flange Face Design: PLAIN SECOND END; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Bolt Circle Nominal Diameter: 4.50 INCHES SECOND END IN. 18 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.