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Established in 1889, the Roberts Filter Group of companies specializes in providing services for the water and wastewater industry. Located in Darby, Pa., the Roberts Filter Group is a family of companies, each designed specifically to serve individual needs throughout the United States and beyond. It offers a wide array of products and services, including pressure filters, GAC (global assembly cache) systems, gravity/package filtration, residuals, pretreatment, instrumentation and control. Services offered include pilot testing, raw water analysis, plant/filter inspections, plant optimization/rehabilitation and turnkey operations.

Metal Flex Hosing, Inc. is a family-owned manufacturing business established in 1975, specializing in stainless steel four-wall interlock cable systems. Recently acquired by Precision Hose Expansion Joints, another family-owned leader in the metal hose industry, Metal Flex continues to focus on meeting the unique needs of its customers. The company prides itself on producing what it believes to be the strongest and most flexible cable armor available in the industry. However, customers are advised to exercise caution, as exerting over 325 lbs. of pressure on the cable armor may cause it to unravel. Generated from the website