Refcomp SP4L2500 SP4L250E Semi Hermetic Compressor For Parallel Racks

The SP4L2500(SP4L250E) channels cold suction gas directly across the motor windings prior to compression, maintaining stable operating temperatures during high-load low-temperature cycles. Designed for versatility across modern commercial refrigeration, its stator insulation materials and synthetic lubrication setup fully support R404A, R507, R134a, R407C, and R22 refrigerants.

Equipped with solenoid-driven cylinder unloader technology, this 25 HP 4-cylinder compressor can step down from 100% full capacity to 50% partial load. This enables parallel rack controllers and large process chillers to match shifting thermal demand, minimizing power draw and preventing rapid compressor cycling under partial load.

Built within a heavy-duty cast-iron body rated for working pressures up to 28 bar, the compressor features an internal safety pressure relief valve. The valve automatically opens to bypass gas from the high-pressure discharge chamber back to the suction side during sudden pressure spikes, protecting housing gaskets and internal mechanics from over-pressurization.