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.
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 handwheel
Equipment
- Handwheel made of PA66GF30 polyamide
- Handwheel with grip recess
- 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
- Stainless steel support spiral for sizes from MD65
- Integrated adjustable stroke limit in open and closed position
Options
- Stainless steel handwheel
- Integrated limit switches
- Locking device
- Stem extension
- Position indicator in stainless steel
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 with pneumatic actuator
Complementary options
- Feedback units
- Positioners
- Adjustable stroke limiter
MD30
MD40 - MD115
MD168-202
MD168-202
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
Stainless steel handwheel for diaphragm diameter MD 30 
Stainless steel handwheel for diaphragm diameters MD 40-115 
Stainless steel handwheel for diaphragm diameters MD 168-202 
Pneumatic actuator for diaphragm diameter MD 30 
Pneumatic actuator for diaphragm diameter MD 40 
Pneumatic actuator for diaphragm diameter MD 65 
Pneumatic actuator for diaphragm diameter MD 92 
Pneumatic actuator for diaphragm diameter MD 115 
Aluminium pneumatic actuator for diaphragm diameters MD 168-202 
Stainless steel pneumatic actuator for diaphragm diameters MD 168-202 
Valve for secure sampling 
Pneumatic actuator with proximity switch Actuator replacement
The replacement of older actuators with a new version is possible without any problems. You can easily find out which new actuator fits your valve with the help of our tool.
open toolA short assembly video to demonstrate the easy replacement of our SISTO actuators.
Take a look and see for yourself!
Documentation
All documents downloadable and catalogue as flipbook (button on the right)