AQUAFORTE PRE-FILTER WITH UNIONS The pre-filter ensures that larger waste solids in the pond water, such as leaves, small branches and larger algae particles are collected before they are caught up in the pump or in the filter. By pre-filtering the water, you prevent larger particles from clogging up or overloading the filter. The service life of the pond pump is protected because large particles will not damage the impeller of the pump. The housing of the pre-filter is transparent, so it is easy to see when it needs cleaning. Max. pressure: 2 bar. Comes with unions for 63 & 50mm solvent pipe, 1½” female threading and hose tails 25/32/40mm. BENEFITS: - Extra pump protection. - Transparent. - Easy to install.