Founded in New York City in 1956 as a specialty valve-industry manufacturer, Mueller Steam Specialty makes pipeline strainers along with check valves and butterfly valves. The company now operates more than 300,000 square feet of ISO 9001:2000-registered manufacturing space in St. Pauls, North Carolina, where its product line has grown well beyond its original strainer focus.
ISO 9001:2000
registration
United Brass Works, IncSince its founding in 1910, United Brass Works has grown from a New York City steam-valve maker into a North Carolina manufacturer with more than a century in the valve industry. Its Keystone Foundry Division adds an in-house casting operation, while the company develops industrial valves and custom components for equipment makers and industrial users. ISO 9001:2015 certification covers its design and manufacturing processes.ERIE, PA
Nelson Controls LLCFounded in 2003 by former U.S. Air Force serviceman Edward Nelson, Nelson Controls LLC makes customized HVAC and industrial valves after beginning as a valve distributorship. Based in Manorville, New York, the company is known for developing a heavy-duty non-rising stem globe valve designed to address seat leakage, corrosion, and demanding steam service conditions. Nelson Controls also provides custom engineering, field-service maintenance, and customer training alongside its valve products.MANORVILLE, NY
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
DFT® IncDFT® Inc. makes in-line check valves and severe-service control valves, with a problem-solving focus that grew from its original Basic-Check® design. Founded as Durabla Manufacturing Company in New York City in 1911, the company has more than 80 years of valve experience and is known for silent check valves that help prevent water hammer. DFT operates under an ISO 9001:2015 quality system and tests every check valve for pressure and leakage before shipment.EXTON, PA