The Valve,check, cataloged under National Stock Number 4820-01-249-3748, 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 14 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 | 4820-01-249-3748 |
| Primary Part Number | 1390F-1 1/2IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Robert H Wager Co Inc |
| Status | ACTIVE |
| Flow Control Device | BALL |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | PLAIN ALL ENDS |
| Bolt Circle Nominal Diameter | 3.875 INCHES ALL ENDS IN |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | FLANGE ALL ENDS |
| Bolt Hole Nominal Diameter | 0.625 INCHES ALL ENDS IN |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Outside Diameter | 1.500 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 4 ALL ENDS |
| Material | COPPER ALLOY OR STEEL BODY |
| Material | COPPER OR NICKEL ALLOY FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| Nominal Thickness | 0.688 INCHES ALL ENDS 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 |
|---|---|
| 1390F-1 1/2IN PRIMARY | Robert H Wager Co Inc (USA) |
NSN 4820-01-249-3748 is a Valve,check, manufactured by Robert H Wager Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-249-3748 has 1 manufacturer part number on file: 1390F-1 1/2IN (Robert H Wager Co Inc).
Key specifications for 1390F-1 1/2IN: Flow Control Device: BALL; Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: PLAIN ALL ENDS; Bolt Circle Nominal Diameter: 3.875 INCHES ALL ENDS IN. 14 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.