You need to supply the nozzles and such with clean fluid. THIS is how you do it when you're pushing hard but not to the razor's edge. Connect to either the usual 1/4" (6.35mm) Nylon hose or -4AN. The package conveniently packages an oversized 40-micron filter and comes with your choice in fittings. If you really are hardcore and need full protection, then our FAILSAFE Pump Outlet Kit is the better choice.
This is the critical pressurized side. Leaks are avoided via use of quality compression fittings and made impossible with the AN option. With flammable methanol concentrations (e.g. 70/30), you'll need AN. For 50/50 ratio brew or pure water, compression and Nylon hose are perfect. Cost is the same.