The externally controlled diaphragm valve Type 2031 consists of a pneumatically operated piston actuator, a diaphragm and a 2-way valve body. The proven and robust actuator with a plastic housing ensures use in hygienic or aggressive ambient conditions. The flow-efficient valve bodies with little dead space enable high flow rates and a wide range of possible uses. The valve body and the diaphragm are available in all common materials and variants. The actuator has a compact, autoclavable design (PPS variant). The integration of the automation units 8690/8697 is possible in all configuration levels (can be retrofitted). An explosion-proof ATEX / IECEx device variant is available. The add-on body is optionally available in plastic or stainless steel. The actuator is equipped with an integrated, optical position indicator as standard, optionally a min./max. stroke limiter can be installed. Valve body and diaphragm are available in various materials and variants Product wetted surfaces in Ra ≤ 0.38…≤ 1.6 µm (optionally electropolished) Available in all common connection sizes and variants For selecting the correct product please refer to the technical data, images and notes for proper use according to the data sheet.