Two-stage actuated diaphragm valve, air-operated 'Model 658/688'
GEMÜ manufactured (GEMU) air-operated stainless steel diaphragm valve (diaphragm valve)
**Features of GEMÜ (GEMU) Two-Stage Actuated Diaphragm Valve** ● The adjustment screw on the control head allows for setting not only fully closed and fully open positions but also intermediate openings (flow restrictions) ⇒ A filling device that uses two valves can be replaced with a single valve! ● Suitable for aseptic processes in pharmaceuticals, food, and biotechnology ⇒ CIP/SIP capable ● Also compatible with ultra-pure fluid handling in the semiconductor, microelectronics, and fine chemicals fields ● Diverse valve body and diaphragm options ⇒ Customizable in various materials and specifications ● GEMÜ's unique gasket system ⇒ Minimizes liquid accumulation in the flow path and eliminates corrosion. ● Experts in diaphragm development and manufacturing ⇒ Achieves high sealing performance even with fluids containing particles ● Compatible with various connection standards ● Optional ATEX explosion-proof specifications available
basic information
【Nominal Diameter】 Type 658: 10A to 20A, Type 688: 15 to 50A 【Applicable Fluids】 Inert and corrosive liquids and gases 【Fluid Temperature】 -10 to 150℃ 【Operating Pressure】 0 to 1.0 MPa 【Ambient Temperature】 0 to 60℃ 【Body Material】 Stainless Steel 【Diaphragm Material】 EPDM, PTFE, FPM 【Connection】 Butt welding, threaded connection, ferrule, and other various standards
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Model number/Brand name
GEMÜ 658/688
Applications/Examples of results
[Usage] ● Supply of raw materials for pharmaceuticals, food products, and chemicals
Detailed information
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GEMÜ provides value through its cutting-edge manufacturing capabilities and new technology development. We have strong connections with the pharmaceutical industry worldwide and have been engaged in the development and improvement of valves. As a result, we offer a wide range of products, including "sanitary diaphragm valves," which require sterility, and "valves specialized for semiconductor manufacturing," which demand high control precision. We have established six manufacturing sites around the world and provide services in over 50 countries. As a leading company in the sanitary valve market, our products are adopted in many plants. We actively engage in research and development, with over 5% of our annual sales allocated to development investments. Thanks to this effort, we have been recognized by the Institute for Management and Economic Research (IMWF) in Germany as a technology company promoting digitalization.