Main applications

  • Building services
  • Chemical industry
  • Food and beverages
  • General Processes
  • HVAC
  • Heat transfer, Cooling circuits
  • Heating / ventilation / air-condition
  • Industry engineering
  • Navy
  • Oil /Gas
  • Petrochemical Industry
  • Shipping / Shipbuilding
  • Special processes
  • Steel
  • Sugar
  • Surface treatment

Technical data

T max 350 °C
DN max 350
PN max 16


Flanged end non-return valve with spring-loaded check disc, maintenancefree.


Hot water heating systems. High-temperature hot water heating systems. Heat transfer systems. General steam applications in building services and industry. Other fluids on request.

Further technical information about BOA-R

Overview of technical data

T -10 – 350 (°C)
DN 15 – 350
PN 16
Body design Straight pattern body, Angle pattern body
Dimension standard EN 558-1/8 ISO 5752/8, EN 558-1/1 ISO 5752/1
Valve disc/plug material Metal-to-metal seat
Threaded-end design Flange design
Body material (EN standard) JL 1040, JS 1025
Main applications Industry and process engineering, Oil / Gas, Building services
Body material Nodular cast iron, Cast iron
Body/bonnet seal element Externally confined seal