The Valve,ball, cataloged under National Stock Number 4820-01-137-0350, 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 19 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 | 4820-01-137-0350 |
| Primary Part Number | 0499-D |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Flange Shape | ROUND SECOND END |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Flange Face Design | PLAIN SECOND END |
| Bolt Circle Nominal Diameter | 6.500 INCHES FIRST END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Material Document and Classification | QQ-N-288 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.688 INCHES FIRST END IN |
| Valve Size | 3.500 INCHES IN |
| Second Connection Face to Centerline Distance | 7.625 INCHES IN |
| Nominal Outside Diameter | 8.000 INCHES FIRST END IN |
| Nominal Outside Diameter | 7.500 INCHES SECOND END IN |
| Bolt Hole Quantity | 8 FIRST END |
| First Connection Face to Centerline Distance | 16.250 INCHES IN |
| Material | NICKEL ALLOY OVERALL |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 1.500 INCHES FIRST END IN |
| 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 |
|---|---|
| 0499-D PRIMARY | Portland Valve Llc (USA) |
NSN 4820-01-137-0350 is a Valve,ball, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-137-0350 has 1 manufacturer part number on file: 0499-D (Portland Valve Llc).
Key specifications for 0499-D: Flange Shape: ROUND SECOND END; Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Flange Face Design: PLAIN SECOND END. 19 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.