Actuators

Product features

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.

Topworks with handwheel

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.

Topworks with pneumatic actuator

Equipment

• Piston actuator
• Valve bonnet in compact design, actuator housing and valve bonnet manufactured from one part
• Stainless steel stem
• Clearly visible red position indicator
• Stainless steel compressor
• 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

Topworks for secure sampling

The SISTO-CSPV is a manual removal valve equipped with a pneumatic actuator as an additional safety component to prevent unsafe or unwanted sampling.

The handwheel can only be operated when the pneumatic actuator is supplied with compressed air.

If the compressed air in the actuator fails, the valve closes and the handwheel as well as the point of use are locked so that no unwanted sample can be taken.

• Increased plant safety and employee protection
• Safe sampling is guaranteed due to the interaction of a manual and a pneumatic actuator
• The positions of both actuators can be monitored centrally via two inductive proximity sensors
• Stroke limit in open and closed direction
• Suitable for CIP/SIP
• Optional with stainless steel handwheel