The Pulsatron KOP Kit is specifically designed for Pulsatron Electronic Metering Pumps with a head size 2. It features a PVC (Polyvinyl Chloride) head material, TFE (Teflon) seat/o-rings, and a Ceramic valve ball. The connection type is tubing with dimensions 0.25" x 0.38". This KOP Kit helps reduce downtime and ensures consistent maximum performance from your 6GPD Metering Pump.