The Valve,check, cataloged under National Stock Number 4820-01-336-2300, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is National Fluid Seperators Dba National Fluid Separators. Government technical data includes 10 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 | 4820-01-336-2300 |
| Primary Part Number | 038-001A004 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | National Fluid Seperators Dba National Fluid Separators |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Mounting Position | HORIZONTAL |
| Supplementary Features | FLOW CONTROL DEVICE: STEM |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.750 INCHES ALL ENDS IN |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| 038-001A004 PRIMARY | National Fluid Seperators Dba National Fluid Separators (USA) |
| 038-001A004 | Marine Ventures Ltd (ata Mv Fluids Handling) (GBR) |
NSN 4820-01-336-2300 is a Valve,check, manufactured by National Fluid Seperators Dba National Fluid Separators, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-336-2300 has 2 manufacturer part numbers on file: 038-001A004 (National Fluid Seperators Dba National Fluid Separators), 038-001A004 (Marine Ventures Ltd (ata Mv Fluids Handling)).
Key specifications for 038-001A004: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Mounting Position: HORIZONTAL; Supplementary Features: FLOW CONTROL DEVICE: STEM; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 10 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.