The Bull BBQ (16507) replacement bulk propane gas or natural gas regulator is constructed of durable cast material and fits all Bull BBQ gas grills (any model, any size). Ships configured for natural gas and must be configured for use with bulk liquid propane. Not compatible with low-pressure liquid propane tanks or cylinders. For use with Bull BBQ products ONLY! Max Inlet Pressure is 1/2 PSI, Spring Range is 5-inch (Natural Gas), 10-Inch (Propane Gas).