making the orifices much larger and more uniform so that installing the air valve seat set in produces more repeatable results
This electric tube notcher was specifically designed to notch schedule 40 pipe ranging in sizes from ¼” to 2”
After adjusting the horizontal bar
Item ID 14038
Stainless steel is the strongest
Walter Depressed Center Grinding Wheel, Type 27, 0.25 In Thick, Zirconia Alumina dbc_42-inches making the orifices much largerDimensions Thickness 0. 25 in Arbor Size 5 8" 11 Diameter 5 in Details Item Depressed Center Grinding Wheel Abrasive Wheel Type Type 27 Abrasive Material Zirconia Alumina Series XCAVATOR Grade Extra Coarse Application Hard Metal, Stainless Steel, Steel Description Depressed Center Grinding Wheel, Thickness 0. 25 in, Abrasive Material Zirconia Alumina, Series XCAVATOR, Grade Extra Coarse, Application Hard Metal, Stainless Steel, Steel Restrictions