The Valve,ball, cataloged under National Stock Number 4820-01-185-2297, 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 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-185-2297 |
| Primary Part Number | V-3281-1/2IN |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST ENDROUND WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST ENDPLAIN FIRST END |
| Bolt Circle Nominal Diameter | 2.438 INCHES FIRST END2.438 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST ENDFLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDSSTRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.562 INCHES FIRST END0.562 INCHES FIRST END IN |
| Valve Size | 0.500 INCHES0.500 INCHES IN |
| Bolt Hole Quantity | 3 FIRST END3 FIRST END |
| Face to Face Distance | 4.000 INCHES4.000 INCHES IN |
| Material | COPPER ALLOY BODY |
| Valve Operation Method | MANUALMANUAL |
| Nominal Thickness | 0.688 INCHES FIRST END0.688 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 |
|---|---|
| V-3281-1/2IN PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| V-3281 1/2IN | 5/9 Secondary reference Tyco Fire Products Lp |
| V-3281 | D/9 Drawing number reference only Tyco Fire Products Lp |
NSN 4820-01-185-2297 is a Valve,ball, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-185-2297 has 1 manufacturer part number on file: V-3281-1/2IN (Portland Valve Llc).
Key specifications for V-3281-1/2IN: Flange Shape: ROUND WITH HOLES FIRST ENDROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST ENDPLAIN FIRST END; Bolt Circle Nominal Diameter: 2.438 INCHES FIRST END2.438 INCHES FIRST END IN; Connection Type: FLANGE FIRST ENDFLANGE FIRST END. 12 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.