Johnson Controls R-3710-3107 Restrictor

The Johnson Controls R-3710-3107 is a precision-engineered pneumatic restrictor designed for stable airflow control in low-pressure HVAC control circuits. Featuring a .007" orifice, this color-coded aqua fitting is essential for creating the necessary pressure drop in bleed-type pneumatic systems, ensuring accurate signal transmission to actuators and controllers. This T-fitting restrictor is constructed from high-grade thermoplastic, providing chemical resistance and structural integrity within a maximum operating pressure of 25 psig. The configuration includes dual barbed terminals for 1/4" OD polytubing and a 1/8" NPT male thread, allowing for direct mounting into controller ports or actuator housings. For technicians troubleshooting hunting or slow response times in pneumatic control loops, verify that the orifice is clear of oil and debris to maintain flow coefficients. This series R-3710 restrictor serves as a reliable replacement component for maintaining Johnson Controls pneumatic systems and ensuring optimal calibration of downstream terminal equipment.

• Precision Airflow Control: The calibrated .007-inch orifice provides consistent bleed rates for stable pneumatic signaling.
• Integrated Mounting: Features a 1/8" NPT connection for simplified installation directly into control components.
• Color-Coded Identification: Aqua housing allows for rapid visual identification of orifice size during field service and HVAC maintenance.
• Durable Construction: Thermoplastic body resists common environmental stressors found in mechanical rooms and air handling units.

What is the maximum pressure rating for the R-3710-3107?
This component is designed for low-pressure pneumatic logic and should not exceed 25 psig to ensure reliable operation.

Can I use this with standard 1/4" plastic tubing?
Yes, the barbed fittings are specifically designed for 1/4" OD polytubing, providing a secure friction fit without the need for additional clamps under standard operating pressures.

Where is this restrictor typically installed in a pneumatic circuit?
It is commonly threaded directly into the supply port of a pneumatic controller or used in-line to transition between polytubing and NPT-threaded ports while managing system bleed-off.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.