The Valve,check, cataloged under National Stock Number 4820-01-101-3438, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is C-Way Industries 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-101-3438 |
| Primary Part Number | 04100497 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | C-Way Industries Inc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 25.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 0.125 INCHES SECOND END IN |
| Nominal Thread Size | 0.125 INCHES FIRST END IN |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| 04100497 PRIMARY | C-Way Industries Inc (CAN) |
| 04030011-2 | C-Way Industries Inc (CAN) |
| Reference | Meaning |
|---|---|
| A04100497 | 5/9 Secondary reference C-Way Industries Inc |
| P356-25 | 3/2 Design control — primary reference U.S. Government activity |
| A04030011-2 | 5/9 Secondary reference C-Way Industries Inc |
NSN 4820-01-101-3438 is a Valve,check, manufactured by C-Way Industries Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-101-3438 has 2 manufacturer part numbers on file: 04100497 (C-Way Industries Inc), 04030011-2 (C-Way Industries Inc).
Key specifications for 04100497: Flow Control Device: POPPET; Connection Style: PLAIN, OPTIONAL END (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Mounting Position: HORIZONTAL OR 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.