In 1948, Detroit Regulator Co. patented its innovative Straight-Thru-Flow (STF) regulator design also known as the Maxitrol. The design allows gas to flow straight through the regulator without changing directions. Maxitrol began distributing its products in the European market in 1965. Maxitrol Company’s headquarters is currently located in Michigan, USA. We supply Maxitrol regulators and gas valves