Festo QS standard series · source page 49
190659 · QSL-¼-4
Exact Festo ordering-table record with current 2026 EN_US datasheet availability verified.
Published ordering evidence
Exact catalog record
- Festo part number
- 190659
- Published type
- QSL-¼-4
- Product series
- QS standard series
- Current datasheet year verified
- 2026
- Catalog source page
- 49
- Published row text
- R¼ 2.8 4 10 29 11 28 20.7 14 18 q190659 QSL-¼-4 10
Verification boundary
What still needs to match
Tube interfaceConfirm tube outside diameter, material, hardness, insertion depth, and retention requirements.
Thread and sealingMatch metric/R/G thread standard, size, sealing-ring or thread-coating method, and port geometry.
Media and limitsVerify pressure, temperature, media compatibility, lubrication, vacuum use, and required flow.
EnvironmentCheck corrosion class, material, weld-spatter or food-industry requirements, orientation, and current Festo documentation.
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