While some valve-mounted operators require horizontal orientation to prevent heat interference

It is typically installed as a pre-filter to protect high-efficiency coalescing filters or refrigerated air dryers from heavy liquid loading

industrial-grade performance in demanding steam and hot water applications

it is specifically designed for systems requiring 4-speed capability to regulate hydronic output effectively

Fasco D336 Motor 326058-756 While some valve-mounted operators requireThe Fasco D336 Motor is a high performance, 3 speed HVAC motor designed for precision air movement in fan coil units, heating systems, and air conditioning applications. Engineered as a shaded pole motor with a 4. 4 inch frame diameter, this unit provides versatile power outputs of 1 10, 1 15, and 1 25 HP at a rated speed of 1550 RPM. Its double shaft design, featuring 3 8 inch diameters with flats, allows for flexible fan blade or blower wheel