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SED Flow Control, GmbH was founded in 1984 and began manufacturing Industrial and Plastic Diaphragm Valves, Angle Seat Valves and Flow Meters. In 1996 the Aseptic Diaphragm Valve was first released to compliment their existing product line. In 1997, SED Flow Control began marketing and supplying their products in the United States through another valve manufacturer. SED Distribution Group opened in 2002 as the exclusive supplier in the North American market. SED Distribution Group became a division of Harrington Industrial Plastics, LLC in 2008 as SED North America. All three companies, SED Flow Control, GmbH, Bad Rappenau, Germany, SED North America, Woodridge, IL and Harrington Industrial Plastics, LLC, with over 50 branch locations are all members of the Aliaxis Group of Companies.


Our Philosophy

Our global customers recognize our benefits of SED’s innovative design and manufacturing technology, product flexibility, quick delivery, and competitive pricing. The ideal benefit for you, our customer, is achieved through active and cooperative teamwork of both parties during the design and specification of the process valves. SED’s valve products are designed to meet your process requirements.



The ultimate benchmark for quality is the complete satisfaction of our customers. Therefore, SED Flow Control applies its quality concept comprehensively to all areas including research and development, production, suppliers, services and sales with our worldwide distribution network. Quality control is our number one goal.



An international operating company, SED Flow Control is leading the industry with years of research and development in manufacturing modular valve designs that many experts agree are far superior to other types of valve offerings. Challenged by the strict requirements of ASME BPE to minimize process dead legs and exceed the current Good Manufacturing Practices (cGMP) is accomplished through innovative designs and creative solutions.



Conceptual designs and modern machining capabilities are integrated through the 3D-CAD-CAM network that connects to the CNC machining facilities. SED continues to invest in the most modern technology bringing our products from conception to development and creating process solutions with a high degree of flexibility.



All SED aseptic diaphragm valve bodies and materials used in fabrications contain a heat number that is traceable to the material properties and physical composition per ASME BPE Table MM-2.2-1. SED North America supplies Material Test Reports, EN 10204 inspection certificate 3.1b with every valve or fabrication manufactured. Diaphragm materials meet FDA 21CFR177.2600 for Elastomers, FDA 21CFR177.1550 for Perfluorocarbon Resins, USP 87 & 88 Class VI, 3A and EMEA/410/01 – TSE/BSE (ADCF) Minimizing Risk of Transmitting Animal Spongiform Encephalopathy. All diaphragms are fully traceable back to the lot and batch. A Material Analysis Traceability Certificate DIN EN 10204 3.1 is supplied with all diaphragms.


SED North America – Mission Statement

Our mission is to provide the high purity market with innovative process solutions and engineered designs to our mutual customers through our distribution network. We have two main goals, first, to be recognized as a superior quality product supplier and second, to deliver the quality product in a timely manner to meet our customer’s needs and expectations. To achieve this mission, we strive to break down the bid and buy business practice and build a resource team with our customers. We will strive to create an honest, enthusiastic, and dedicated work force that allows for balance within their personal lives.