The Valve,check, cataloged under National Stock Number 4820-01-319-9984, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fielden Handling Ltd. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-319-9984 |
| Primary Part Number | SMH1044-6 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Fielden Handling Ltd |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Thread Series Designator | PTF-SAE SHORT ALL ENDS |
| 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 |
|---|---|
| SMH1044-6 | Fielden Handling Ltd (GBR) |
| Reference | Meaning |
|---|---|
| SMH1044-6 | 5/9 Secondary reference Fielden Handling Ltd |
| K775-201-042 | 3/9 Design control — primary reference Lansing Inc |
NSN 4820-01-319-9984 is a Valve,check, manufactured by Fielden Handling Ltd, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-319-9984 has 1 manufacturer part number on file: SMH1044-6 (Fielden Handling Ltd).
Key specifications for SMH1044-6: Flow Control Device: DISK; Mounting Position: HORIZONTAL OR VERTICAL; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Thread Direction: RIGHT-HAND ALL ENDS. 7 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.