In most refrigeration applications, it is necessary to start or stop the flow in the refrigerant circuit to automatically control the fluids in the system. An electronically operated solenoid valve is usually used for this purpose. Its basic function is the same as a manually operated shut off valve, but by being solenoid actuated, it can be positioned in remote locations and may be conveniently controlled by simple electrical switches. Emerson offers a complete range of normally closed valves and normally open valves that cover any application ranging from 12 ton to 100 tons. We offer direct acting and pilot operated valves. For the pilot operated valves, there are diaphragm valves and piston operated valves.
