Main applications

  • Ash removal
  • Boiler feed systems
  • Chemical industry
  • Cooling water and condensate
  • District heating
  • Energy
  • Flue gas desulphurization plants (FGD)
  • Flue gas desulphurization systems (FGD)
  • Industrial waste water
  • Industry engineering
  • Municipal waste water
  • Nuclear Power Stations
  • Odour removal
  • Oil /Gas
  • Petrochemical Industry
  • Power Stations < 100 MW
  • Power Stations > 100 MW
  • Sea -& Riverwater Extraction
  • Sludge treatment
  • Steam circuits
  • Suspended solids treatment
  • Turbine Island
  • Waste water
  • Waste water transport
  • Water Extraction
  • Water treatment

Technical data

T max 120 °C
DN max 150
PN max 16


Swing check valve to DIN/EN with flanged ends, body with or without lining, soft-seated, no dead volumes, straight-way pattern, full bore, slanted seat, static sealing to atmosphere; with soft rubber encapsulated pre-loaded valve disc featuring short travel to closure.


Building services, industry and power stations; suitable for drinking water, service water, fluids handled in the food and beverage industry, abrasive and aggressive products in chemical engineering and process engineering.

Further technical information about SISTO-RSK

Overview of technical data

T -10 – 120 (°C)
DN 25 – 150
PN 16
Body design Y-valve body
Coating Yes
Dimension standard DIN 3202-F1 (ISO 5752/1)
Lining Yes
Valve disc/plug material Soft seat
Threaded-end design Flange design
Body material (EN standard) JS 1025
Main applications Water, Industry and process engineering, Energy, Oil / Gas, Building services, Waste water / sewage, Mining / Dredge
Body material Nodular cast iron
Body/bonnet seal element Internally and externally confined seal