The Valve,check, cataloged under National Stock Number 4820-00-006-9929, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ge Aviation Systems Llc Dba Ge Aviation Systems Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-006-9929 |
| Primary Part Number | CYLB-50098-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Criticality Code Justification | FEAT |
| Style Designator | STRAIGHT THRU |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Disk Loading Method | SPRING |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Material | ALUMINUM SEAT |
| Material | ALUMINUM BODY |
| 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 |
|---|---|
| 128SCEC603-1 | Northrop Grumman Systems Corporation (USA) |
| CYLB-50098-1 PRIMARY | Ge Aviation Systems Llc Dba Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| CYLB50098 | 5/9 Secondary reference Ge Aviation Systems Llc Dba Ge Aviation Systems Llc |
NSN 4820-00-006-9929 is a Valve,check, manufactured by Ge Aviation Systems Llc Dba Ge Aviation Systems Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-006-9929 has 2 manufacturer part numbers on file: 128SCEC603-1 (Northrop Grumman Systems Corporation), CYLB-50098-1 (Ge Aviation Systems Llc Dba Ge Aviation Systems Llc).
Key specifications for CYLB-50098-1: Flow Control Device: POPPET; Criticality Code Justification: FEAT; Style Designator: STRAIGHT THRU; Maximum Operating Temp: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF. 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.