Maxitrol gas pressure regulator use with natural, mixed, manufactured, LP or LP gas/air mixtures in residential, commercial and industrial applications. Feature high leverage valve linkage to deliver positive dead-end lock-up and precise regulating control from full flow down to pilot flows. Self-aligning valve made of Nitrile rubber. Equipped with over-pressure protection devices (OPD) complying with new ANSI codes for 5 lbs gas pressure.