The ZL multistage series offers a high efficiency venturi, which operates with an efficiency of 150% (compared to the 40% offered by other units). For every scfm of compressed air it consumes, the ZL generates an incredible suction flow rate of 1,587 scfm. The ZL is available with an integrated vacuum switch with a digital reader for design flexibility. Other features include an integrated suction filter, exhaust silencer and push-in tube fittings. Its compact design allows it to be mounted on 3 sides.