The Valve,angle, cataloged under National Stock Number 4820-01-121-0843, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 15 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-121-0843 |
| Primary Part Number | 2620-902ASSYD 3/8 IN |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Renewable Seat Ring Type | THREADED |
| Nominal Pipe Size Accommodated | 0.375 INCHES ALL ENDS IN |
| Connection Style | STREAMLINED WITH TWO BRAZING RINGS ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | ANGLE |
| Operating Pressure | 700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | INSIDE SCREW |
| Bonnet Attachment Method | UNION |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY STEM |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Material | NICKEL ALLOY 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 |
|---|---|
| 2620-902ASSYD 3/8 IN | The Walworth Company (USA) |
| Reference | Meaning |
|---|---|
| 2620-902ASSYD 3/8 IN | 5/9 Secondary reference U.S. Government activity |
| 1-03-0121 | 5/9 Secondary reference U.S. Government activity |
| 2620-902 | D/9 Drawing number reference only U.S. Government activity |
| 845-1889587ASSYD 3/8 IN | 5/2 Secondary reference U.S. Government activity |
| 845-1889587 | D/9 Drawing number reference only U.S. Government activity |
| 11-03-0121 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-121-0843 is a Valve,angle, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-121-0843 has 1 manufacturer part number on file: 2620-902ASSYD 3/8 IN (The Walworth Company).
1 possible match (shared part number, not a government interchangeability claim): 5905-01-448-8381. Verify interchangeability with system specifications before substitution.
Key specifications for 2620-902ASSYD 3/8 IN: Flow Control Device: DISK; Renewable Seat Ring Type: THREADED; Nominal Pipe Size Accommodated: 0.375 INCHES ALL ENDS IN; Connection Style: STREAMLINED WITH TWO BRAZING RINGS ALL ENDS. 15 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.