... 5,8,16,20,30,50,80 20L Cooling Water Circulating Pump Features:•Side in the wind side ... medium•Take parameters memory, calls self-restore function•Bladder for 304 stainless steel, sanitary, beautiful and corrosion ... •Using the bladder, which make mixing more uniform and no dead ... Low temperature Cooling Circulating Pump 20L Cooling Water Circulating Pump