Sporlan Rapid Cycle Solenoid Valves are designed for applications that require a solenoid valve to cycle frequently in a short period to maintain very close temperatures. An environmental test chamber using a mechanical refrigeration system is the most common application of rapid cycle solenoid valves. When rapid cycling a standard solenoid valve, typical failures are knocking out the enclosing tube top plug, cracking the enclosing tube, and mushrooming the plunger at the point of impact. Damage to the plunger is caused by the plunger striking the bottom of the top plug with considerable force each time the valve is cycled.
Developing a way to reduce the impact between the plunger and the top plug is an obvious design target. One way to accomplish this is through the use of a low force coil. By applying a low force coil on a standard valve, the impact force is reduced since the low force coil has less pulling power.
Sporlan developed the rapid cycle solenoid valve as a better means of reducing the impact between plunger and top plug and the associated premature failures. The rapid cycle series valves can operate at a maximum rated pressure of 500 psi and a 250 psi maximum operating pressure differential (MOPD) on AC voltage and are suitable for either liquid or vapor refrigerant flow.