How are seals & sealing of the water circuits performed?
SPI standard rotary platens have two circuits. The water comes in from the fixed portion of the rotary platen (base plate) where two ¼ NTP circuits feed into one channel in the water union (center rotating shaft) of the rotary platen. It is fed into the moving portion of the platen (rotating plate) and is separated back into two ¼ NTP circuits. The circuit in the water union has the same volume to handle the capacity for the two ¼ NTP feed circuits.