Heavy-duty, high-capacity single stage cylinder regulators feature new and improved gauge designs. Larger faced delivery gauge (low pressure) with high contrasted colored face for easy setting. Enhanced color-coded knob designs provide more comfortable operations. Fully enclosed, highly visible modular gauges for more clarity with robust metal gauge guard. Robust seat gives optimum performance. Consistent pressure and flow delivery. High resistance to oxygen related fires. SLAM knob absorbs impact in the event of a cylinder fall.