Festo GRLA Series Flow Controller Exhaust Valve 1/4in, 8mm Tube Inlet, ISO 1179-1 & ISO 228-1, 1 bar Max GRLA-1/4-QS-8-D

The Festo GRLA-1/4-QS-8-D Flow Controller Exhaust Valve is a high-quality pneumatic function fitting designed for effective regulation of exhaust air within pressurized systems. This valve is ideal for controlling piston speed in pneumatic actuators during both advance and return strokes, ensuring optimal system performance and preventing exhaust air from re-entering the main pneumatic circuit. It is particularly recommended where precise flow regulation and reliable sealing are essential for industrial automation.

Designed according to ISO 1179-1 and ISO 228-1 thread standards, the valve fits 1/4 inch outlets and accommodates 8mm tube inlets, making it highly compatible with a wide range of pneumatic equipment. The push-in/pull-out connection simplifies installation and maintenance, allowing for quick exchange or adjustment. A swivel fitting permits full 360-degree rotation, supporting flexible mounting in tight or complex machine environments.

Construction features include a brass adjusting screw, enabling precise calibration of the flow setting. The valve is equipped with oil-resistant NBR (nitrile rubber) seals, which provide long-lasting leak protection and maintain system integrity even in demanding industrial conditions. The maximum operating pressure is 1 bar and the valve operates reliably across temperatures from -10°C up to 150°C, supporting safe function in diverse plant environments.

Typical applications for this Festo GRLA exhaust valve include pharmaceutical manufacturing, plastic processing, and food and beverage production, where reliable pneumatic flow control is frequently required. The valve meets RoHS and ISO 8573-1 compliance standards and is approved by Germanischer Lloyd, underscoring its suitability for high-pressure and quality-sensitive operations.

Installation and adjustment are simple due to the reliable push-in connector and ergonomic design. Its robust construction ensures longevity and minimizes downtime, making it ideal for continuous industrial use. The unit is engineered to prevent substandard sealing by utilizing Festo's quality-approved NBR seals, thereby protecting against leaks and maintaining system performance under rigorous duty cycles.

Allows precise adjustment and regulation of exhaust air flow in pneumatic systems. Compatible with ISO 1179-1 and ISO 228-1 thread standards for versatile installation. Features reliable NBR seals for enhanced resistance to oil and leakage protection.

Swivel fitting enables 360-degree mounting rotation for flexible installation. Brass adjusting screw facilitates accurate calibration of valve position. Maximum operating pressure is 1 bar, providing safe performance for industrial use.

Operating temperature range from -10°C to 150°C ensures suitability for diverse environments. Meets RoHS and ISO 8573-1 standards for quality and compliance.

This exhaust valve is highly recommended for use in industrial, pharmaceutical, plastics, and food processing environments. For more pneumatic valves and function fittings, explore the complete Festo range in the Pneumatic Function Fittings category at EnvMart.