Founded in 1857, Mueller Company is one of the leading manufacturers and marketers of infrastructure and flow control products in North American. The company provides fire hydrants, valves and pipe fittings. Its products are used in potable water systems and treatment facilities. Mueller Company serves public and private utilities, as well as the fire protection and commercial and residential construction industries. The company offers the Mueller NO-BLO system, which is used by natural gas mains and service lines. It works with a team of over 5,400 employees. Mueller Company maintains a network of sales and distribution offices throughout the world. The company operates Mueller Service Company. It is a subsidiary of Mueller Water Products.