Festo QSL-1-4-6 153047 Push-in L‑Fitting R1/4 Male to 6mm

Festo QSL-1/4‑6 is a 90° push‑in L‑fitting (elbow threaded adaptor) that connects a R1/4 male thread to 6 mm OD pneumatic tubing. The fitting is 360° orientable after installation, allowing alignment along the tube axis even after the threaded connection is tightened. The push‑pull principle enables tool‑free assembly and disassembly of the tubing, and the blue release ring provides visual identification of the release mechanism.

Applications:

• Compressed air distribution in industrial automation

• Pneumatic control panels and manifolds

• Machine assembly lines and material handling equipment

• OEM pneumatic system integration for valves, cylinders and actuators

Core Specifications:

• Product type: Push‑in L‑fitting (elbow threaded adaptor)

• Pneumatic connection, port 1: R1/4 male thread (BSPT 1/4″)

• Pneumatic connection, port 2: For tubing outside diameter 6 mm (push‑in)

• Orientation: 360° rotatable after tightening the threaded connection

• Design: L‑shaped (90° angle) with external hexagon for installation

• Nominal size: 4.3 mm

• Material of housing: PBT (polybutylene terephthalate)

• Material of release ring: POM

• Material of tube retaining claw: High‑alloy stainless steel, corrosion‑resistant

• Material of threaded plug: Brass, nickel‑plated

• Seal material on joint: NBR

• Type of seal on screw‑in stud: Coating (thread sealant pre‑applied)

• Release ring colour: Blue

• Operating pressure (entire temperature range): –0.95 bar to 6 bar

• Operating pressure (temperature‑dependent): up to 14 bar

• Operating medium: Compressed air to ISO 8573‑1:2010 [7:‑:‑]; water possible as per manufacturer declaration

• Ambient temperature: –10 °C to +80 °C

• Product weight: approx. 19 g

• Logistics dimensions (L×W×H): 34×28×17 mm

Advanced Specifications:

• Corrosion resistance class (CRC): 1 – Low corrosion stress

• LABS (PWIS) conformity: VDMA24364‑B1/B2‑L

• Cleanroom class: Class 4 to ISO 14644‑1

• Mounting position: any

• Packing unit: 10 pieces

• Design structure: Push/pull principle

• Mounting type: External hexagon, spanner size AF 14

• Max. tightening torque for threaded connection: 9 Nm (± 20 %)

• Operating medium note: Operation with oil lubrication possible

• RoHS compliant

• Product status: Commercialised

• This fitting replaces QSL‑B‑1/4‑6‑20

System Integration:

• Belongs to Festo QS series of push‑in fittings.

• Compatible with all Festo pneumatic tubing for 6 mm outside diameter (such as PUN, PAN, PEN series).

• Fits QSL product family NBR tube seals.

• Directly mounts onto components with R1/4 female threads.

• 360° orientation after tightening allows flexible tube routing without stress on the connection.

Related Products:

• QSL‑1/4‑4 – same thread with 4 mm push‑in port (reduced flow)

• QSL‑1/4‑8 – same thread with 8 mm push‑in port (higher flow)

• QSL‑1/4‑10 – same thread with 10 mm push‑in port (higher flow, larger body)

• NPQP‑L‑G14‑Q6 – alternative nickel‑plated brass L‑fitting for heavy‑duty mechanical stress

Standards & Compliance:
ISO 8573‑1:2010, RoHS compliant.