Rotary screw technology has established itself as the efficient alternative to lobe blowers. ZSs reduce energy costs by an average of 30%. Regardless of the type of application (e.g. wastewater treatment, pneumatic conveying, desulfurization), ISO 8573-1 Class 0-certified positive displacement screw blowers protect all your most important processes and products. Variable speed drive technology helps you save even more money by adjusting the air pressure flow rate and motor speed to your specific needs.