The Valve,check, cataloged under National Stock Number 4820-00-306-1387, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sloan Valve Company. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-306-1387 |
| Primary Part Number | H735AG 1INCH |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Sloan Valve Company |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN, OPTIONAL END (PIPE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Mounting Position | HORIZONTAL |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Style Designator | ANGLE |
| Thread Direction | RIGHT-HAND SECOND END |
| Thread Direction | RIGHT-HAND FIRST END |
| Nominal Thread Size | 1.250 INCHES SECOND END IN |
| Nominal Thread Size | 1.000 INCHES FIRST END IN |
| Disk Loading Method | SPRING |
| Surface Treatment | CHROMIUM |
| Material | COPPER ALLOY BODY |
| Material | PLASTIC FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 0388008 | Sloan Valve Company (USA) |
| H735AG 1INCH PRIMARY | Sloan Valve Company (USA) |
| Reference | Meaning |
|---|---|
| H40ALK | 5/9 Secondary reference Sloan Valve Company |
| H600AG 1INCH | 5/9 Secondary reference Sloan Valve Company |
NSN 4820-00-306-1387 is a Valve,check, manufactured by Sloan Valve Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-306-1387 has 2 manufacturer part numbers on file: 0388008 (Sloan Valve Company), H735AG 1INCH (Sloan Valve Company).
Key specifications for H735AG 1INCH: Flow Control Device: DISK; Connection Style: PLAIN, OPTIONAL END (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Mounting Position: HORIZONTAL. 18 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.