Festo CRQSL-1/8-6 High-Alloy Stainless Steel Push-in L-Fitting

Technical Overview

The Festo 162872 (CRQSL-1/8-6) is a highly durable, 360° orientable push-in L-fitting engineered for aggressive environments, cleanrooms, and food processing applications. Constructed entirely from premium high-alloy stainless steel, it features an R1/8 male thread pneumatic connection on port 1 and a 6 mm outside diameter push-in connector on port 2. The unit operates via a secure push-pull principle equipped with a resilient FPM (fluoroelastomer) tubing seal. Engineered to withstand ambient and media temperatures ranging from -15°C to 120°C, and an operating pressure spectrum spanning vacuum (-0.95 bar) up to 10 bar, it delivers exceptional versatility. The fitting holds a maximum Corrosion Resistance Class rating (CRC 4), ensuring profound resistance to harsh chemicals, aggressive washdown acids, and alkalis. Its food-safe, FDA-compliant, and PWIS-free design perfectly addresses the stringent purity and structural requirements of modern industrial automation.

Key Features

360° rotatable L-shape configuration for optimal pneumatic tube routing in confined spaces.
Manufactured from high-alloy stainless steel for extreme corrosion resistance (CRC 4).
Extensive operating pressure range from vacuum (-0.95 bar) to 10 bar.
Wide operating temperature compatibility from -15°C to 120°C.
Industrial-grade FPM tubing seal suitable for compressed air, vacuum, and water.
FDA-compliant and food-safe construction for hygienic applications.
Convenient, tool-free push-pull fitting principle for precise 6mm O.D. tubing connections.
LABS (PWIS) conformity VDMA24364-B1/B2-L for paint-wetting impairment substance-free environments.

Technical Specification Matrix

Parameter	Value
Nominal Size	3.9 mm
Tubing Insertion Depth	19.5 mm
Pneumatic Connection 1	Male thread R1/8
Pneumatic Connection 2	For tubing outside diameter of 6 mm
Operating Pressure Range	-0.95 bar to 10 bar
Operating Temperature Range	-15 °C to 120 °C
Corrosion Resistance Class (CRC)	4 (Very high corrosion stress)
Housing Material	High-alloy stainless steel
Release Ring Material	High-alloy stainless steel
Tubing Seal Material	FPM (Fluoroelastomer)
Type of Mounting	External hexagon, size 12 mm
Operating Medium	Compressed air to ISO 8573-1:2010 [7:-:-], Water

Industrial Applications

1. Food and Beverage Processing Systems

Transporting clean, food-grade compressed air and washdown water to automated packaging stations, diverters, and filling lines.

Problem Solved

Standard brass or plastic pneumatic fittings degrade quickly during harsh caustic washdowns. The high-alloy stainless steel and FPM seal combination provides uncompromising CRC 4 corrosion resistance against aggressive cleaning agents while firmly maintaining FDA food safety compliance.

High-alloy stainless steelFPM tubing sealCRC 4food-safeFDA-compliantcaustic washdown

2. Pharmaceutical Cleanroom Automation

Facilitating compact pneumatic connections for miniature control valves and actuators within precision medical manufacturing environments.

Problem Solved

Confined machinery spaces inside sterile modular assembly lines demand space-saving configurations. The L-shaped, 360° orientable push-in design paired with PWIS/LABS-free conformity ensures sterile, ultra-clean operation without outgassing, particle shedding, or restricted airflow.

360° orientablePWIS-freeVDMA24364-B1/B2-Lcleanroompush-pull principleL-shaped

3. Corrosive Chemical Handling and Pumping Systems

Actuating pneumatic diaphragm pumps and routing pilot air in facilities managing chemically aggressive fluids and hazardous vapors.

Problem Solved

Chemical fumes and direct acidic splashes oxidize typical pneumatic fittings, leading to severe pressure leaks over time. The robust stainless steel housing and clamping component, combined with a 10 bar pressure rating and wide temperature tolerance (-15°C to 120°C), deliver completely leak-proof durability.

Chemical resistance10 bar operating pressurevacuum capableaggressive media-15°C to 120°C