The Valve,check, cataloged under National Stock Number 4820-01-098-9256, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-098-9256 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Flow Control Device | DISKDISK |
| Renewable Seat Ring Type | PRESSED-INPRESSED-IN |
| Nominal Pipe Size Accommodated | 1.500 INCHES FIRST END1.500 INCHES FIRST END IN |
| Connection Style | SOCKET (PIPE) FIRST ENDSOCKET (PIPE) FIRST END |
| Mounting Position | HORIZONTALHORIZONTAL |
| Connection Type | UNTHREADED INTERNAL TUBE FIRST ENDUNTHREADED INTERNAL TUBE FIRST END |
| Style Designator | STRAIGHT THRUSTRAIGHT THRU |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSEWATER-OIL-GAS SINGLE RESPONSE |
| Valve Operation Method | AUTOMATICAUTOMATIC |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1,CLEANED IN ACCORDANCE WITH MIL-P-52211QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1,CLEANED IN ACCORDANCE WITH MIL-P-52211 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| NS-3983 ASSY AE | 5/9 Secondary reference National Oilwell |
| NS-3983 ASSY AEC1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| NS-3983 ASSY AE | 3/1 Design control — primary reference Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
NSN 4820-01-098-9256 is a Valve,check, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-098-9256: Flow Control Device: DISKDISK; Renewable Seat Ring Type: PRESSED-INPRESSED-IN; Nominal Pipe Size Accommodated: 1.500 INCHES FIRST END1.500 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST ENDSOCKET (PIPE) FIRST END. 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.
NSN 4820-01-098-9256 has DEMIL Code B. 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.