Festo QS-G1/4-8 186099 Push-In Straight Fitting G1/4 Male to 8mm Tube

Festo QS-G1/4-8 is a straight, male-threaded push-in fitting (threaded adapter) that connects a G1/4 male thread (BSPP parallel, with sealing ring) to 8 mm outside diameter pneumatic tubing. The stainless steel tube retaining claw securely grips standard pneumatic tubes without damaging the surface and compensates for vibrations and pressure surges. Made from nickel-plated brass, the fitting provides high corrosion resistance and can be rotated after installation for flexible tube routing. The push-pull principle enables tool‑free assembly and disassembly, while the blue release ring provides visual identification of the release mechanism. Suitable for compressed air, vacuum, and water (by manufacturer declaration) over a wide temperature range.

Applications:

• Compressed air distribution in industrial automation and machine building

• Connecting pneumatic tubing to valves, cylinders, and control panels

• Vacuum systems and pilot-operated equipment

• Water piping applications (G-thread only with sealing ring) according to manufacturer declaration

Core Specifications:

• Series: QS

• Shape: Straight design (inline) with external hexagon (spanner size AF 17)

• Pneumatic connection, port 1: Male thread G1/4 (BSPP), seal type sealing ring

• Pneumatic connection, port 2: Push-in fitting for tube OD 8 mm

• Nominal size: 7 mm

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

• Temperature-dependent operating pressure: –0.95 … 14 bar

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

• Packing unit: 10 pieces

• Product weight: approx. 15 g

• Housing material: Brass, nickel-plated

• Release ring material: POM (blue)

• Tube seal material: NBR

• Tube retaining claw material: High-alloy stainless steel

• Nominal tightening torque: 9 Nm (±20 %)

Advanced Specifications:

• Operating medium: Compressed air according to ISO 8573‑1:2010 [7:-:-], water (liquid, ice‑free) 

• Lubricated operation: possible (continued lubrication required if applied)

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

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

• RoHS compliant

• Maritime classification: see certificate

System Integration:

• Belongs to the Festo QS standard series of push‑in fittings for pneumatic systems.

• The fitting can be mounted in any position.

• 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-G1/4-8 (186120) – 90° L‑fitting elbow, G1/4 male to 8 mm tube, 360° orientable

• QS-G1/4-8-50 (132040) – Same fitting with larger packing size of 50 pieces

• QS-G1/4-6 (186094) – Same series, G1/4 male to 6 mm tube

• NPQP-D-Q8-E-FD-P10 (133093) – Push-in connector, 8 mm to 8 mm, PBT housing