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the "front" of the blade should be turning clockwise
The units are functionally identical
the Belimo B320B valve is a solid choice
Rugged construction built for demanding industrial and commercial HVAC environments
Schneider Electric (Barber Colman) 2378-501 Relay 30067439-890 the "front" of the bladeThe 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
