Th e Sporlan line of discharge bypass valves are designed to provide an economical method of compressor capacity control
in place of cylinder unloaders or to handle unloading requirements below the last step of cylinder unloading. Th ese
modulating control valves automatically bypass the required amount of discharge gas to the low side to maintain the desired
minimum evaporator pressure. Th e valves are applicable on any refrigeration or air conditioning system that operates
during periods of low load, which can result in coil icing or short cycling. Th ese valves respond to downstream pressure
changes and open when the evaporator pressure falls below the valve setting. At normal loads and evaporator conditions,
the valve remains closed and the system operates in a conventional manner.