The LMI Chemical Metering Pump Ceramic Weight fits 1/4", 3/8" & 1/2" chemical suction line tubing sizes.
This ceramic weight is compatible with all common water plant chemicals except fluoride. This ceramic weight slips over the chemical suction line (vinyl tubing or Low Density Polyethylene tubing is generally used) to hold the foot valve / strainer in a vertical position.
The added weight prevents the tubing from curling - which would move the foot valve out of its required vertical position.