while cutting. Regardless of the method, the cut must be square so the tube will seat properly in the fitting cup.
3. Ream all cut tube ends to the full inside diameter of the tube to remove the small burrs created by cutting. If the rough, inside edge is not removed by reaming, erosion or corrosion may occur in the tube. A properly reamed tube provides a smooth surface for better water flow. Also remove any burrs on the outside of the tube end to ensure proper entrance of the tube into the fitting cup. You can use the
reaming blade on the tube cutter, half-round or round files, a pock- etknife or a suitable deburring tool. If using soft tube (annealed), be very careful to not deform the tube end by applying too much pres- sure.
4. Clean off all oxides and sur- face oil from the tube end and fit- ting cup. This will allow the proper flow of solder into the joint. Failure to remove them can interfere with capillary action and may lessen the strength of the joint. Lightly clean the tube end using sand cloth or nylon abrasive pads for a distance slightly more than the depth of the fitting cup. Clean the fitting cup by using abrasive cloth, abrasive pads or a proper-sized fit- ting brush.
5. Apply a thin, even coat of flux with a brush to both the tube and fitting as soon as possible after cleaning. Do not apply the flux with your fingers, because chemicals in the flux can be harmful if they come into contact with the eyes, mouth or open cuts. Apply the flux carefully, because residue from excessive amounts of flux can cause corrosion.
6. Insert the tube end into the fitting cup, making sure it is seat- ed against the base of the fitting
The filter location required installation of a new shut-off valve.
Next, we installed a pressure regulator and the sediment filter. The vertical tube pictured is a temporary support piece to carry the weight of the filter and regulator until the supply line has been completed.
The filters tie into the supply line using threaded connections.