Alco Controls Control Valves modulate fluid or refrigerant flow in response to electrical or pneumatic signals, enabling precise temperature and pressure regulation. Offered in globe-style and diaphragm designs, these valves work with thermostats and building-automation systems to maintain setpoints with minimal overshoot. Alco Controls Control Valves deliver smooth, stable modulation—ideal for chilled-water coils, condenser-water loops, and process-cooling applications.