Kerotest Manufacturing Corp. makes valves and related equipment, a business it traces to its 1909 founding in Pittsburgh. The employee-owned company retains its headquarters, product development, engineering, manufacturing, and customer service operations in Pittsburgh, with a second manufacturing facility in Mansura, Louisiana. Its longstanding work serves energy markets as well as municipal water customers.
ISO 9001:2015
ASME N Stamp
Employee Stock Ownership Plan (ESOP)
Compliance program
Crispin ValveFounded in Berwick, Pennsylvania, in 1905 after Clarence Crispin patented an air valve to protect water lines from vacuum collapse, Crispin Valve now manufactures valves for municipal water systems and industrial applications. Still family-owned and American made, the fourth-generation company has produced air valves longer than any other manufacturer and now makes valve designs in sizes from ½ to 168 inches. Crispin valves have served projects ranging from the Panama Canal to water systems around the world.BERWICK, PA
GA IndustriesFounded in Pittsburgh in 1895, GA Industries makes valves for municipal and industrial water and wastewater systems, continuing a line of work that began with boiler-work valves. The company’s valves are manufactured by VAG USA, LLC at its Mars, Pennsylvania facility, where GA Industries’ brand serves North American customers as part of the VAG Group. Its long-running specialty includes automatic and wastewater valves supported by application engineers and parts kept for equipment that has been in service for 50 years or more.MARS, PA
Valk Manufacturing CompanyPrivately owned since Paul Valk founded it in 1952, Valk Manufacturing remains a four-generation family company in New Kingstown, Pennsylvania. Its 100,000-plus-square-foot plant serves transportation departments, municipalities, and heavy industry with American-made equipment built in-house from North American steel.333120NEW KINGSTOWN, PA
Dunn's Valve Testers, IncDunn’s Valve Testers traces its Houston-area manufacturing legacy to 1978, when founder Emmitt Dunn produced the company’s first valve-testing machine for the U.S. Navy. Today, the company builds made-in-USA testing equipment to customer specifications and supports machines throughout their working lives, including systems that have remained in service for more than 30 years.MIDDLETOWN, NY