The Valve,stop-Check, cataloged under National Stock Number 4820-01-204-9068, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-204-9068 |
| Item Name | Valve,stop-Check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISKDISK |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Renewable Seat Ring Type | THREADEDTHREADED |
| Flange Face Design | PLAIN FIRST END |
| Bolt Circle Nominal Diameter | 7.812 INCHES FIRST END IN |
| Mounting Position | VERTICAL |
| Criticality Code Justification | ZZZY |
| Connection Type | FLANGE FIRST END |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.688 INCHES FIRST END IN |
| Valve Size | 5.000 INCHES IN |
| Bonnet Type | OUTSIDE SCREW-YOKEOUTSIDE SCREW-YOKE |
| Nominal Outside Diameter | 9.062 INCHES FIRST END IN |
| Bolt Hole Quantity | 10 FIRST END |
| Bonnet Attachment Method | BOLTEDBOLTED |
| Material | COPPER ALLOY 922 BODY |
| Material | NICKEL ALLOY 400 FLOW CONTROL DEVICE |
| Valve Operation Method | MANUAL |
| Nominal Thickness | 0.562 INCHES FIRST END IN |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 803-1385541-053 | 3/1 Design control — primary reference U.S. Government activity |
| 803-1385541 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-204-9068 is a Valve,stop-Check, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-216-5266, 4820-01-262-8426. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-204-9068: Flow Control Device: DISKDISK; Flange Shape: ROUND WITH HOLES FIRST END; Renewable Seat Ring Type: THREADEDTHREADED; Flange Face Design: PLAIN FIRST END. 20 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.
NSN 4820-01-204-9068 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.