Festo QSL-1/4-8 153049 Push‑In L‑Fitting R1/4 to 8mm

Festo QSL-1/4-8 is a 90° push‑in L‑fitting (threaded adapter) that connects a male R1/4 (BSPT 1/4″) thread to 8 mm outside diameter pneumatic tubing. The fitting can be swivelled 360° after the threaded connection is tightened, allowing flexible tube routing in confined spaces. Material and design provide for a wide application range covering compressed air (dried) and water. They are also suitable for use in vacuum systems.

Based on the push‑pull principle, the fitting supports tool‑free assembly and disassembly; the blue release ring serves as a visual indicator of the release mechanism. The PBT (polybutylene terephthalate) body, nickel‑plated brass threaded plug and NBR tubing seal together provide reliable service in many demanding industrial environments.

Applications:

• Pneumatic actuator supply lines in automation panels and control cabinets

• Routing air to valves, cylinders and manifold blocks with R1/4 male ports

• Compressed air distribution in mechanical workshops and general industrial setups

• Liquid water cooling circuits in machinery (0…50 °C, max. 6 bar)

• Vacuum pick‑and‑place systems (down to –0.95 bar)

Core Specifications:

• Pneumatic connection, port 1: Male thread R1/4 (BSPT 1/4″), with external hexagon (spanner size 14 mm)

• Pneumatic connection, port 2: Push‑in fitting for tubing OD 8 mm

• Design: L‑shaped (elbow, 90°), 360° rotatable after tightening the threaded connection

• Nominal size: 6.7 mm

• Operating pressure (temperature‑dependent): –0.95 bar … 14 bar

• Operating pressure (full temperature range): –0.95 bar … 6 bar

• Ambient / media temperature: –10 °C … +80 °C

• Housing material: PBT (polybutylene terephthalate)

• Release ring material: POM (blue)

• Tubing seal material: NBR

• Tube retaining claw material: High‑alloy stainless steel

• Screwed plug material: Brass, nickel‑plated

• Type of seal on screw‑in stud: Coating (PTFE pre‑coated)

• Packing unit: 10 pieces

• Product weight: approx. 20 g

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

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

• RoHS compliant

System Integration:

• Belongs to the Festo QSL series of compact push‑in L‑fittings for pneumatic systems.

• Compatible with all Festo 8 mm OD pneumatic tubing (PUN, PAN, PEN series).

• Mounts directly onto components with R1/4 female ports.

• The thread sealing coating is pre‑applied, so no additional sealing material is needed for compressed air applications.

• Replaces model QSL‑B‑1/4‑8‑20.

• For detailed installation and pneumatic circuit diagrams, refer to the product hardware manual.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• QSL‑1/4‑8‑50 (130732) – R1/4 male to 8 mm push‑in, with enhanced corrosion protection

• QS‑1/4‑8 (153005) – Straight push‑in fitting, same thread size and tubing OD

• QS‑G1/4‑8 (186099) – G1/4 parallel male version with sealing ring

• QST‑8 (153130) – Push‑in T‑connector for branching 8 mm tubing lines

• NPQH‑T‑G38‑Q10‑P10 (578400) – Push‑in T‑fitting G3/8 to 10 mm for high‑temperature, high‑flow and harsh‑environment systems