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  WPSa Series - With Semi-Hermetic Screw Compressors


• Wide Range of Capacities:

R134a from ( 92 T.R. to 904 T.R. @ 50 Hz ) , ( 107 T.R. to 1026 T.R. @ 60 Hz ) 

• Quiet Operation with Optimal Performance

• Small Foot Print

• Extremely High Energy Efficiency


Petra’s water cooled water liquid chillers with semi hermetic screw compressors offer a wide range of sizes to meet customer requirements for different applications. Petra’s WPS Series offer state of the art low sound, reliability and high energy efficiency with a small physical foot-print. Petra’s WPS Series are designed to be shipped as a complete factory package.


• Semi-hermetic screw type compressor

• Microprocessor controller

• Low pressure drop coolers

• Shell and Tube condensers

• Easily accessible IP 55 electrical panel

• Galvanized C-Channel structural steel bases

• Exposed insulated refrigeration lines covered with special protective wrapping for long lasting resistance

• Equipped with complete line of accessories for safe operation and control

• Options include heat reclaim heat exchangers, heat pump chillers, brine chillers, compressor part winding, coils protective
   coating, compressor noise compartment, pressure gauges, etc. 

• Also available with R 407c. 

All models specifications are subject to change without prior notice.
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Disclaimer: “These are pictures of representative customers who have purchased air conditioning, heating, refrigeration or ventilation equipment from Petra Engineering Industries. Our inclusion of these pictures should not suggest that these customers endorse our products."