The Valve,vent-Check, cataloged under National Stock Number 4820-01-283-1819, 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 15 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-283-1819 |
| Primary Part Number | 1750F 2-1/2IN BRZ |
| Item Name | Valve,vent-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert H Wager Co Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | PLAIN FIRST END |
| Bolt Circle Nominal Diameter | 5.500 INCHES FIRST END IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES FIRST END IN |
| Nominal Outside Diameter | 7.000 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Media for Which Designed | WATER, SALT SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Material | COPPER FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.562 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 |
|---|---|
| 2.5-1750FB BRZ COPPER FLT SS SCR | Robert H Wager Co Inc (USA) |
| 1750F 2-1/2IN BRZ PRIMARY | Robert H Wager Co Inc (USA) |
| 1750FB-2.50IN PRIMARY | Robert H Wager Co Inc (USA) |
| 2.5-PM1-B-F-C | Hydrasearch Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1750F 2.5IN BRZ | C/1 Advisory reference — outside the item-of-supply concept Robert H Wager Co Inc |
NSN 4820-01-283-1819 is a Valve,vent-Check, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-283-1819 has 4 manufacturer part numbers on file: 2.5-1750FB BRZ COPPER FLT SS SCR (Robert H Wager Co Inc), 1750F 2-1/2IN BRZ (Robert H Wager Co Inc), 1750FB-2.50IN (Robert H Wager Co Inc), 2.5-PM1-B-F-C (Hydrasearch Company, Llc).
Key specifications for 1750F 2-1/2IN BRZ: Flow Control Device: BALL; Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Bolt Circle Nominal Diameter: 5.500 INCHES FIRST END IN. 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.