The Valve,vent, cataloged under National Stock Number 4820-01-282-8474, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Robert H Wager Co Inc. Government technical data includes 11 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 | 4820-01-282-8474 |
| Primary Part Number | 3IN-1660F |
| Item Name | Valve,vent |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert H Wager Co Inc |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Furnished Items and Quantity | 1 CAP |
| Bolt Circle Nominal Diameter | 6.000 INCHES FIRST END IN |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES FIRST END IN |
| Valve Size | 3.000 INCHES IN |
| Nominal Outside Diameter | 7.500 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Nominal Thickness | 0.625 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 |
|---|---|
| 3IN-1660F PRIMARY | Robert H Wager Co Inc (USA) |
NSN 4820-01-282-8474 is a Valve,vent, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-282-8474 has 1 manufacturer part number on file: 3IN-1660F (Robert H Wager Co Inc).
Key specifications for 3IN-1660F: Flange Shape: ROUND WITH HOLES FIRST END; Furnished Items and Quantity: 1 CAP; Bolt Circle Nominal Diameter: 6.000 INCHES FIRST END IN; Connection Type: FLANGE FIRST END. 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.