The Valve,check, cataloged under National Stock Number 4820-00-063-0856, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cosmodyne, Llc Dba Cosmodyne Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-063-0856 |
| Primary Part Number | 3200703-1CP |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Cosmodyne, Llc Dba Cosmodyne Llc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Connection Style | PLAIN (TUBE) FIRST END |
| Criticality Code Justification | ZZZY |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 2.000 INCHES FIRST END IN |
| Material | COPPER ALLOY 836 BODY |
| Material | COPPER ALLOY 836 FLOW CONTROL DEVICE |
| Valve Operation Method | AUTOMATIC |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 3200703-1CP | Cosmodyne, Llc Dba Cosmodyne Llc (USA) |
| Reference | Meaning |
|---|---|
| 3200703-1CP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 1825-2IN | 5/1 Secondary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| 3200703-1 | 3/1 Design control — primary reference Cosmodyne, Llc Dba Cosmodyne Llc |
| 1825-2INCP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 1825-2IN | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 4820-00-063-0856 is a Valve,check, manufactured by Cosmodyne, Llc Dba Cosmodyne Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-063-0856 has 1 manufacturer part number on file: 3200703-1CP (Cosmodyne, Llc Dba Cosmodyne Llc).
Key specifications for 3200703-1CP: Flow Control Device: DISK; Connection Style: PLAIN (TUBE) FIRST END; Criticality Code Justification: ZZZY; Style Designator: STRAIGHT THRU. 9 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.