GEMÜ 687 Pneumatic Diaphragm Valve Actuator for 2" Valve

The GEMÜ 687 is a robust pneumatically operated 2/2-way diaphragm valve designed for reliable control of liquids, gases, and steam in industrial applications. This specific unit features a pneumatic actuator suitable for a 2" (DN 50) valve, offering high performance in demanding environments such as chemical processing, pharmaceuticals, water treatment, and food and beverage industries. Key benefits include excellent corrosion resistance due to its modular design with optional materials like stainless steel or plastic components, easy maintenance with replaceable diaphragms, and precise control via pneumatic actuation for automated systems. Compared to similar products like those from Burkert or Alfa Laval, the GEMÜ 687 provides superior leak-tightness and longer service life in aggressive media, with drawbacks including higher initial cost and the need for compressed air supply. The actuator ensures quick response times and fail-safe operation. This used unit from 2012 shows minor wear but remains functional, with no visible damage to critical components. It excels in hygienic applications due to its cleanable design and compliance with standards like FDA and USP Class VI.