Stimuli are signals that trigger the senses. Receptors detect the stimuli and neurons send the signals to the brain where they're interpreted. Each sense organ includes receptors that capture relevant stimuli for transmission to the brain. The receptors in the skin are mechanoreceptors and thermoreceptors.
AWWA Butterfly valves are quick opening valves that consist of a metal circular disc or vane with its pivot axes at right angles to the direction of flow in the pipe, which when rotated on a shaft, seals against seats in the valve body. They are normally used as throttling valves to control flow.
Control valves - For modulating or on/off control of hot or chilled water and low pressure steam. Globe valves, ball vales, gate valves, and butterfly valves. Actuators to open/ close dampers, and control valves. Multi signal and super fast acting actuators available. Control actuators are used to open, close, and modulate air dampers and water valves. Valves for modulating or on/off control of hot or chilled water and low pressure steam. Globe valves, ball vales, gate valves, and butterfly valves.