Browse the selection of line pressure regulators for gas appliances at F.W. Webb. A line pressure regulator is used in a residential, commercial, or industrial application to lessen gas pressure; this allows an appliance or equipment in a piping system to reach the standard operating supply range. Made in durable aluminum, these pressure regulators can withstand normal daily use in a new or existing unit. Use our convenient filters to narrow regulators by outlet pressure, BTU input, pipe size, and other variables. Explore quality line pressure regulators from Maxitrol, Itron, and Cavagna to find the best fit for your system.