The Valve,ball, cataloged under National Stock Number 4820-01-204-8346, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-204-8346 |
| Primary Part Number | 1051-21A1M |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.750 INCHES FIRST END0.750 INCHES FIRST END IN |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRUSTRAIGHT THRU |
| Bonnet Type | INSIDE SCREWINSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDSRIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS0.750 INCHES ALL ENDS IN |
| Bonnet Attachment Method | THREADEDTHREADED |
| Material | STEEL UNS J03002 OVERALL |
| Thread Series Designator | NPT ALL ENDSNPT ALL ENDS |
| Valve Operation Method | MANUALMANUAL |
| 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 |
|---|---|
| 1051-21A1M PRIMARY | Portland Valve Llc (USA) |
| 1051-23A1 PRIMARY | Portland Valve Llc (USA) |
| 1051-24A1 PRIMARY | Portland Valve Llc (USA) |
| BWS-22TT 3-4IN WITH 32EX4 PRIMARY | Portland Valve Llc (USA) |
NSN 4820-01-204-8346 is a Valve,ball, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-204-8346 has 4 manufacturer part numbers on file: 1051-21A1M (Portland Valve Llc), 1051-23A1 (Portland Valve Llc), 1051-24A1 (Portland Valve Llc), BWS-22TT 3-4IN WITH 32EX4 (Portland Valve Llc).
Key specifications for 1051-21A1M: Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END0.750 INCHES FIRST END IN; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDSPLAIN,OPTIONAL END(PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDSTHREADED INTERNAL PIPE ALL ENDS; Style Designator: STRAIGHT THRUSTRAIGHT THRU. 11 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.