The Valve,check, cataloged under National Stock Number 4820-01-582-7054, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dmw Marine, Llc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-582-7054 |
| Primary Part Number | EV 1522 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dmw Marine, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| EV 1522 PRIMARY | Dmw Marine, Llc (USA) |
| Reference | Meaning |
|---|---|
| CPDE0051 FIG 030.0100 NO 20 | 5/1 Secondary reference Dmw Marine, Llc |
NSN 4820-01-582-7054 is a Valve,check, manufactured by Dmw Marine, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-582-7054 has 1 manufacturer part number on file: EV 1522 (Dmw Marine, Llc).
Key specifications for EV 1522: Special Features: DIMENSIONS RHD 12-S; Part Name Assigned by Controlling Agency: NON RETURN VALVE; INAVY: NON RETURN VALVE; End Item Identification: CRANE MODEL PK12000MB; NEW CONSTRUCTION LCS2; Valve Operation Method: AUTOMATIC. 1 specification is 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.