... : Silicone tubing and Tygon tubing Typical applicationSpecial metering pump for adding cement grinding aid-----large grinder special useTransfer fluid ... speed, stable work and high precise transfer.2. Acceptable pump heads for YZ1515x, YZ2515x, SN25, DG-1, DG-2, ... low power loss, connect many pump heads in series or install multichannel pump head for satisfying the different application situations. ...