The 67C Series is a Underwriters Laboratories (UL) listed high-pressure regulators that meets a variety of applications in liquid and vapor service. The compact body design makes the 67C Series particularly useful in installations with space limitations. The 67CH Series regulators come equipped with a handwheel adjustment. This series contains brass materials that are not compatible with anhydrous ammonia service. 67C Series regulators do not have an internal relief and should be installed with additional/external overpressure protection. These units should not be installed in fixed piping serving 14 in.w.c/35 mbar appliance systems.