Main applications

  • Energy
  • Nuclear Power Stations
  • Turbine Island

Technical data

T max 100 °C
DN max 150
PN max 20


Diaphragm valve with butt weld ends, for nuclear applications, shut-off and sealing to atmosphere by completely enclosed spiral-supported diaphragm. All moving parts are separated from the fluid by the diaphragm. Maintenance-free.


Cleaning systems, condensate and cooling water systems, waste water systems, auxiliary systems.

Further technical information about SISTO-20NA

Overview of technical data

T -20 – 100 (°C)
DN 8 – 150
PN 20
Main applications Energy