The Valve,ball, cataloged under National Stock Number 4820-01-556-7995, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dixon Valve & Coupling Company, Llc Div Dixon Fire. Government technical data includes 9 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 | 4820-01-556-7995 |
| Primary Part Number | BBV50TW |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dixon Valve & Coupling Company, Llc Div Dixon Fire |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | CROSS FLANGED ENDS |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Material | COPPER ALLOY BODY |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| BBV50TW PRIMARY | Dixon Valve & Coupling Company, Llc Div Dixon Fire (USA) |
NSN 4820-01-556-7995 is a Valve,ball, manufactured by Dixon Valve & Coupling Company, Llc Div Dixon Fire, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-556-7995 has 1 manufacturer part number on file: BBV50TW (Dixon Valve & Coupling Company, Llc Div Dixon Fire).
Key specifications for BBV50TW: Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Type: UNTHREADED INTERNAL PIPE ALL ENDS; Style Designator: CROSS FLANGED ENDS; Operating Pressure: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 9 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.