Can the MRF OTC Compact "O" Series Pneumatic Plastic Throttle Valve for Actuator be fitted with a protective cover for use in harsh industrial environments?

Yes. The MRF OTC Compact "O" Series Pneumatic Plastic Throttle Valve for Actuator can be fitted with a protective cover to enhance durability and safety in harsh industrial environments. Its design allows easy screwdriver adjustment and the optional protective cover improves resistance to dust, impact and aggressive conditions while maintaining the valve’s compact, lightweight and service-friendly features. Available in multiple thread sizes (M5, 1/8", 1/4", 3/8", 1/2"), and rated for up to 10 bar and -10°C to +50°C, the valve with cover remains suitable for demanding pneumatic applications.

MRF OTC Compact “O” Series Pneumatic Plastic Throttle Valve for Actuator

Q: How do I adjust the flow on the MRF OTC Compact "O" Series Pneumatic Plastic Throttle Valve for Actuator using a screwdriver?

To adjust the flow on the MRF OTC Compact "O" Series Pneumatic Plastic Throttle Valve for Actuator using a screwdriver: 1. Ensure system pressure is within safe limits (≤10 bar) and actuator is in a safe, de-energized state. 2. Locate the screwdriver adjustment slot/head on the valve body (designed for easy adjustment). 3. Insert a suitable screwdriver into the adjustment slot. 4. Turn clockwise to reduce flow (throttle more) and counterclockwise to increase flow (open more). Make small incremental turns and wait between adjustments to allow the actuator to respond. 5. Test actuator speed/response after each adjustment; fine-tune until desired flow and timing are achieved. 6. If fitted, reinstall the protective cover to secure the adjustment and protect against damage or contamination. 7. Re-check for leaks, verify operation across the working temperature range (-10°C to +50°C), and confirm the valve functions correctly at system pressure. Use appropriate PPE and follow site safety procedures.

All products, Pneumatic valves/

Additional information

Material	P – material (plastic)

The MRF OTC series COMPACT “O” throttle-return valve is a highly efficient solution designed for direct installation in actuator connections, ensuring precise control of compressed air flow and direction within pneumatic systems. Its compact design, combined with a practical plug connection, allows for quick and effortless disassembly of pneumatic hoses, significantly reducing downtime during maintenance. The valve enables easy adjustment with a screwdriver, while the option of adding a protective cover enhances durability and safety in demanding industrial environments. Available in a wide range of sizes – M5, 1/8″, 1/4″, 3/8″, and 1/2″ – it offers versatile compatibility with various system requirements. Engineered to operate under pressures up to 10 bar and within a temperature range of -10°C to +50°C, it guarantees reliable performance even in challenging conditions. Manufactured from robust plastic, the valve combines lightweight construction with long-lasting resistance, making it an ideal choice for modern pneumatic applications where efficiency, flexibility, and ease of use are essential.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
MW-9011001C	Throttle check valve for MRF OTC actuator, 4 mm hose, GZ M5	-	10
MW-9011003C	Throttle check valve for MRF OTC actuator, 6 mm hose, GZ BSP 1/8"	-	10
MW-9011004C	Throttle check valve for MRF OTC actuator, 6 mm hose, GZ BSP 1/4"	-	10
MW-9011005C	Throttle check valve for MRF OTC actuator, 8 mm hose, GZ BSP 1/8"	-	10
MW-9011006C	Throttle check valve for MRF OTC actuator, 8 mm hose, GZ BSP 1/4"	-	10
MW-9011007C	Throttle check valve for MRF OTC actuator, 6 mm hose, GZ M5	-	10
MW-9011008C	Throttle check valve for MRF OTC actuator, 10 mm hose, GZ BSP 1/4"	-	10
MW-9011011C	Throttle check valve for MRF OTC actuator, 4 mm hose, GZ BSP 1/8"	-	10
MW-9011016C	Throttle check valve for MRF OTC actuator, 12 mm hose, GZ BSP 1/2"	-	10

The MRF OTC series COMPACT “O” throttle-return valve is a highly efficient solution designed for direct installation in actuator connections, ensuring precise control of compressed air flow and direction within pneumatic systems. Its compact design, combined with a practical plug connection, allows for quick and effortless disassembly of pneumatic hoses, significantly reducing downtime during maintenance. The valve enables easy adjustment with a screwdriver, while the option of adding a protective cover enhances durability and safety in demanding industrial environments. Available in a wide range of sizes – M5, 1/8″, 1/4″, 3/8″, and 1/2″ – it offers versatile compatibility with various system requirements. Engineered to operate under pressures up to 10 bar and within a temperature range of -10°C to +50°C, it guarantees reliable performance even in challenging conditions. Manufactured from robust plastic, the valve combines lightweight construction with long-lasting resistance, making it an ideal choice for modern pneumatic applications where efficiency, flexibility, and ease of use are essential.