The Valve,vent-Check, cataloged under National Stock Number 4820-01-469-0328, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-469-0328 |
| Primary Part Number | 1750-TIG 2.50IN |
| Item Name | Valve,vent-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert H Wager Co Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Furnished Items and Quantity | 1 FLOAT AND 1 COVER AND 1 STRAINER |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Mounting Position | VERTICAL |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 2.500 INCHES FIRST END IN |
| Mounting Facility | THREADED FASTENER |
| Surface Treatment | ZINC |
| Media for Which Designed | WATER, SALT SECOND RESPONSE |
| Media for Which Designed | VACUUM FIRST RESPONSE |
| Thread Quantity Per Inch | 8 FIRST END |
| Material | COPPER FLOW CONTROL DEVICE |
| Material | IRON CAST BODY |
| Thread Series Designator | NPT FIRST END |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 1750-TIG 2.50IN PRIMARY | Robert H Wager Co Inc (USA) |
| 1750-T IRON GALVANIZED 2.50IN | Robert H Wager Co Inc (USA) |
NSN 4820-01-469-0328 is a Valve,vent-Check, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-469-0328 has 2 manufacturer part numbers on file: 1750-TIG 2.50IN (Robert H Wager Co Inc), 1750-T IRON GALVANIZED 2.50IN (Robert H Wager Co Inc).
Key specifications for 1750-TIG 2.50IN: Flow Control Device: BALL; Furnished Items and Quantity: 1 FLOAT AND 1 COVER AND 1 STRAINER; Connection Style: PLAIN, OPTIONAL END (PIPE) FIRST END; Mounting Position: VERTICAL. 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.