Festo 153438 QSKL-1/2-12 – Self-Sealing Push-In L-Fitting, R1/2 Male Thread to 12 mm Tubing
The Festo 153438 (type QSKL-1/2-12) is a self-sealing push-in L-fitting from Festo’s QSK series. It connects 12 mm OD pneumatic tubing at 90° to an R1/2 male thread. Its key feature is the integrated shut-off function: when the tube is pulled out, the fitting closes automatically. That means you can remove tubing or a downstream component without shutting off the whole compressed air line.
The fitting has a nickel-plated brass screw-in stud with a pre-applied thread coating for sealing, and mounts with a 21 mm external hexagon. The housing is PBT, the tube clamping is stainless steel and the tube seal is NBR. The tube side uses the push-pull principle with a blue release ring. It handles vacuum down to −0.95 bar and pressures up to 6 bar across the full temperature range, or up to 14 bar depending on temperature. The large 6.2 mm nominal size suits main supply lines and higher-flow branches.
What the Part Number Means
- 153438: Festo part number
- QSK: self-sealing push-in fitting series
- L: L-fitting (90° elbow)
- 1/2: R1/2 male thread
- 12: for 12 mm OD tubing
Key Features
- Self-sealing: closes automatically when the tube is removed
- Design: 90° push-in L-fitting
- Connections: R1/2 male thread to 12 mm OD tubing
- Sealing: pre-applied thread coating on the screw-in stud
- Mounting: 21 mm external hexagon
- Vacuum and pressure: from −0.95 bar up to 6 bar (up to 14 bar depending on temperature)
Key Specifications (Festo 153438)
- Type: QSKL-1/2-12
- Series: QSK push-in fittings, self-sealing, standard size
- Design: L-shape (90°), push-pull principle
- Pneumatic connection 1: male thread R1/2
- Pneumatic connection 2: push-in connector for 12 mm OD tubing
- Nominal size: 6.2 mm
- Tubing insertion depth: 22.9 mm
- Mounting: external hexagon, 21 mm; any mounting position
- Nominal tightening torque: 26 Nm ±20%
- Type of seal on screw-in stud: coating
- Operating medium: compressed air to ISO 8573-1:2010 [7:-:-]; lubricated operation possible
- Operating pressure, full temperature range: −0.95 to 6 bar
- Temperature-dependent operating pressure: −0.95 to 14 bar
- Ambient temperature: −10 to +80 °C
- Materials:
- Housing: PBT
- Screw-in stud: nickel-plated brass
- Release ring: POM, blue
- Tube clamping: high-alloy stainless steel
- Tube seal: NBR
- Weight: 81 g
- Pack size: 1 piece
- Conformity: RoHS compliant
Typical Applications
- Supply connections where tubing must be removed without depressurising the line
- Quick-change connections for tools, fixtures and maintenance points
- 12 mm main and branch supply lines on machines and air preparation units
- Pneumatic panels and manifolds with R1/2 ports
- Like-for-like replacement where Festo 153438 / QSKL-1/2-12 is specified
Buy the Festo 153438 from Atlantech Drives
Atlantech Drives supplies the Festo 153438 QSKL-1/2-12 self-sealing push-in L-fitting with fast worldwide shipping and a 12-month warranty. Our experienced sales team can also quote 12 mm tubing, other QS fittings, and Festo valves and air preparation units. Request a quote today for price and availability.
More Festo Products
- Festo 153336 Push-In Fitting
- Festo 6211 MFH Solenoid Valve
- Festo 173129 MEH Solenoid Valve
- All Festo products
Manufacturer website: Festo
Keyword Synonyms
- 153438 / QSKL-1/2-12 / QSKL1212
- Festo 153438 self-sealing L-fitting
- Festo QSKL-1/2-12 push-in elbow, R1/2 to 12 mm
- Festo self-sealing push-in fitting 12 mm, 90°
- Festo QSK shut-off push-in elbow R1/2
- Festo push-in L-fitting with automatic shut-off
- Festo L-Steckverschraubung selbstdichtend QSKL-1/2-12 / racor codo autoobturante Festo 153438
