10. The Valve Shop - Shop Valves Online! Asco Valve - Numatics
Link: https://www.thevalveshop.com/menu/auto/asco/asco.html
Description: WebASCO Valve provides the broadest line of solenoid & motorized shutoff valves designed to control the flow of fuel gas, liquid propane, and all grades of fuel oil used in combustion applications such as: industrial furnaces, ovens, kilns, incinerators, burners, and boilers.