BB...G Grey cast iron
BB...C Carbon steel
BB...A stainless steel
Valves depending on version
made of cast steel, spheroidal graphite iron, aluminium bronze or stainless steel
Intermediate flange double flap check valves
DN50 - 500 depending on version*
PN 6-40 or Class 150 - 300 depending on version**
Optional special seals made of NBR, EPDM, PTFE or FPM are possible.
Special Inconel springs are possible.
Optional designs are possible.