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R 0 Field cutting and Fig. 5-3. Dualoy 3000/L can be tapered in all sizes using the Ameron Taper Maker. The ratchet handle makes Taper Maker convenient to use in confined spaces when repairing existing lines. Fig. 5-4. Pipe in 2, 3 and 4 -inch sizes is typically tapered using one of several powered tapering tools available from outside sources. Observe the following procedures when operating the Taper Maker. Refer to Fig 5-2. • Check blade angle by using a factory taper as a guide. When properly adjusted, the blade should be in contact with the taper over the entire taper length. If adjustment is required, loosen the blade retaining screws and adjust the blade angle with the set screw. • Note that the cutting blade has four cutting edges. • Mark the required taper length on the pipe. Refer to the taper length table below. • Insert the threaded collet shaft through the base casting and the mandrel. • Select the appropriate size collet and slide it onto the mandrel, making sure the key inside the collet engages the slot of the mandrel. • Hold the collet and turn the collet control knob clockwise until the collet begins to expand. Note that it may be necessary to adjust the cutting head to accommodate different size collets. • Insert the collet into the pipe until the back end is flush with the end of the pipe. • Expand the collet to grip the inside of the pipe by turning the collet control knob clockwise. • Lower the cutting blade until it contacts the pipe by turning the cutting head adjustment handle clockwise. Tapering with powered tapering tools For complete operating information, refer to the appropriate Taper Maker Product Data/Operating Instructions. Pipe in 2, 3 and 4 -inch sizes is most often tapered using one of several powered tapering tools. Manufacturers' names and addresses may be obtained from Ameron distributors. Pipe tapered with these tools should be periodically checked against a factory taper for taper length and taper angle. The correct mandrel must be used for Dualoy piping. Taper lengths Nominal Taper Pipe Size Length (in) (mm) (in) (mm) 2 50 1 1h 38 3 80 13/4 44 4 100 1 7A 48 6 150 23/4 70 Fig. 5-4. Pipe in 2, 3 and 4 -inch sizes is typically tapered using one of several powered tapering tools available from outside sources. Observe the following procedures when operating the Taper Maker. Refer to Fig 5-2. • Check blade angle by using a factory taper as a guide. When properly adjusted, the blade should be in contact with the taper over the entire taper length. If adjustment is required, loosen the blade retaining screws and adjust the blade angle with the set screw. • Note that the cutting blade has four cutting edges. • Mark the required taper length on the pipe. Refer to the taper length table below. • Insert the threaded collet shaft through the base casting and the mandrel. • Select the appropriate size collet and slide it onto the mandrel, making sure the key inside the collet engages the slot of the mandrel. • Hold the collet and turn the collet control knob clockwise until the collet begins to expand. Note that it may be necessary to adjust the cutting head to accommodate different size collets. • Insert the collet into the pipe until the back end is flush with the end of the pipe. • Expand the collet to grip the inside of the pipe by turning the collet control knob clockwise. • Lower the cutting blade until it contacts the pipe by turning the cutting head adjustment handle clockwise. Tapering with powered tapering tools For complete operating information, refer to the appropriate Taper Maker Product Data/Operating Instructions. Pipe in 2, 3 and 4 -inch sizes is most often tapered using one of several powered tapering tools. Manufacturers' names and addresses may be obtained from Ameron distributors. Pipe tapered with these tools should be periodically checked against a factory taper for taper length and taper angle. The correct mandrel must be used for Dualoy piping.