The larger ZR is a single-stage vacuum generator. The modular design allows the user to choose only the components needed for the application. The ZR is available with a combination of generator unit, supply/release valve unit, pressure switch unit, and suction filter unit. Order without the generator unit for use as a filter and valve assembly for house vacuum systems. Special function plates allow the use of shop air to create the vacuum, and nitrogen for the blow-off. Available in standalone or manifold configurations.