Durable Construction: High-grade brass machining prevents erosion of the orifice seat

This hydronic zone valve repair kit includes critical components such as the quad ring

it maintains performance under standard thermal cycling found in condenser linkage applications

Most York furnace orifices have the physical size or part number stamped on the brass casing for quick identification during field maintenance

The uni-line add-on design ensures compatibility with Robertshaw factory model types 7000

Johnson Controls R-3710-3107 Restrictor Durable Construction: High-grade brass machiningThe 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