Pneumatic valve actuator MD168- 202

manualrotarypiston

To operate the SISTO-C diaphragm valves, we provide manually operated actuators as well as double- and single-acting pneumatic actuators. A change from manual actuator to pneumatic actuator – or vice versa – can easily be accomplished at any time. No nuts are required to attach the actuator to the valve body. The bolts are inserted directly into the valve body, an aspect which simplifies assembly considerably. The actuator housing and valve bonnets are made of one part and are weight-optimized. The reduced overall height ensures a significant reduction in space requirements, especially when using multiport valves. For the MD168 and MD202 sizes, a weight-reduced aluminium version is also available as an alternative to the stainless steel version. Equipment Clearly visible red position indicator, recognizable from all angles Non-rising handwheel Stainless steel bonnet, electropolished Compressor made of stainless steel Autoclavable Diaphragm suspension with floating nut Integrated adjustable stroke limit in open and closed position Options Integrated limit switches Locking device Stem extension Equipment Piston actuator Clearly visible red position indicator Diaphragm suspension with floating nut Spring chamber venting by operating hole Spring to close – air to open Spiral spring support for sizes MD65 and larger Options Spring to open – Air to close Air to open – air to close Two-stage actuator (Coarse flow – fine flow) Hight temperature design with FKM/FPM seal Complementary options Feedback units Positioners Adjustable stroke limiter