Now you can protect your system from unsightly stains and equipment damage commonly associated with metals such as iron, copper, magnesium and manganese. MetalTrap selectively filters out metals found in recirculating and replenishment water. Just attach to a garden hose, flush and fill. Typical flowrate is 5–7 gpm. Schedule 40 PVC, withstands over 75 psi. 3/4" hose bib.