Dunn’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.
Williams ValveFounded in Houston in 1918, Williams Valve manufactures rugged industrial and commercial valves for demanding heavy-industry and military applications. Its New York facility produces American-made valves, including products for U.S. Navy and Coast Guard vessels, while the company also designs custom solutions, provides in-house machining and testing, and maintains stock for faster delivery. Williams Valve is an ABS Type Approved marine manufacturer with a long-standing specialty in naval and marine service.LONG ISLAND CITY, NY
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
Inflation Systems, IncFor more than 40 years, family-owned and operated Inflation Systems, Inc. has manufactured valves, inflation equipment, specialty fire extinguishers and related products in the USA for commercial and military customers. The company also tests products to military specifications and provides metal-casting impregnation services through its Impretech subsidiary, whose process conforms to MIL-STD-276. Inflation Systems is ISO certified.MAMARONECK, NY
Valv-Trol LLCFounded in Akron in 1947 to solve tough valve problems for the rubber-molding industry, Valv-Trol LLC now manufactures standard and custom high-pressure water-hydraulic valves for demanding industrial systems. The Stow-based company also reconditions valves with original OEM parts, pressure-tests every valve before shipment, and supports applications ranging from hydraulic presses to hydrostatic pipe testing. Its more than 75 years of experience show in a product line shaped by difficult, abrasive service and extensive custom-engineering work.STOW, OH