Screw Compressor

Petra’s water cooled liquid chillers (WPSa) with a wide range of capacities and exceptionally high efficiencies, were designed to meet customer requirements for a variety of applications. Petra WPSa chillers offer state of the art low sound, high quality and reliability, optimized performance and a compact physical footprint. Petra WPSa chillers with semi-hermetic screw compressors and R-134a HFC refrigerant are 100% factory tested and commissioned to ensure efficient performance at specified operating conditions.