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it minimizes pitting and arcing
Rugged construction built for demanding industrial and commercial HVAC environments
Regular lubrication through the nipple helps maintain the integrity of the internal bearing surfaces
The units are functionally identical
the Belimo B320B valve is a solid choice
Schneider Electric (Barber Colman) 2378-501 Relay 30067439-890 it minimizes pitting and arcingThe Schneider Electric (Barber Colman) 2378 501 Relay is a high performance pneumatic amplifying relay designed for proportional signal control in HVAC systems. Engineered as a Pneumodular component, this device provides a definitive 2: 1 amplifying function, doubling the input signal pressure to the branch line. This is essential for contractors managing larger actuators or terminal units that require higher pressure than the standard controller
