The Valve,angle, cataloged under National Stock Number 4820-00-073-9333, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Bellofram Corporation. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-073-9333 |
| Primary Part Number | 0L631-1 |
| Item Name | Valve,angle |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Flow Control Device | NEEDLE |
| Connection Style | FLARED (TUBE) ALL ENDS |
| Style Designator | ANGLE |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Features Provided | BONNET PACKING |
| Bonnet Type | INSIDE SCREW |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.437 INCHES ALL ENDS IN |
| Seat Angle | 45.0 DEGREES ALL ENDS |
| Bonnet Attachment Method | THREADED |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 20 ALL ENDS |
| Material | STEEL BODY |
| Material | STEEL SEAT |
| Material | STEEL FLOW CONTROL DEVICE |
| Thread Series Designator | UNF 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 |
|---|---|
| 0L631-1 | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| 0L631-1 | 3/9 Design control — primary reference Desco Corp Marsh Bellofram Div |
NSN 4820-00-073-9333 is a Valve,angle, manufactured by Bellofram Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-073-9333 has 1 manufacturer part number on file: 0L631-1 (Bellofram Corporation).
Key specifications for 0L631-1: Flow Control Device: NEEDLE; Connection Style: FLARED (TUBE) ALL ENDS; Style Designator: ANGLE; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN. 17 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.