EMAX Compressor has added our duplex Alternating line to the EMAX family. The benefits to these compressors are the alternating switch that will allow the units to alternate from one pump to another. The unit will pump up to set pressure, then under the next start-up sequence the opposing pump will start. This eliminates excessive running and allows the pumps to cool under heavy loads. These units also have a feature that if one pump will not maintain set pressure and not keeping up with demand, then both units will come on and run until the unit hits the pressure setting after which it will go back into normal alternating mode. There are (2) Of our low RPM solid cast iron patented pressure lubricated pumps paired with (2) Industrial grade 1750 RPM motors, (2) Magnetic Starters ran with a relay switch all installed on our ASME certified 120 Gallon Horizontal tanks. This unit as all the features to make using it a breeze from its automatic tank drain to the belt tensioners and the continuous run mode, this compressor has it all. Equipped with our Whisper100 dissipates compressor intake noise by channeling the intake air through a series of baffle plates. This low-profile system adds 4 levels of air filtration along with making the compressor quiet, lowering the decibels by more than 35%.