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Used world wide from high end pro brass repair to shops cranking out school rentals, our valve burnishing tool provides a safe, fast method for removing dents and high spots in piston type valve casings. The tool uses a 'T' Handle that attaches to one end of a brass barrel and an Expansion Pin that goes into the barrel's opposite end. The barrel is then placed inside the valve casing and positioned so that the barrel’s center is in the approximate area of the dent. Next, a 'T' wrench is inserted in the other end of the valve casing and is used to turn the expansion pin and very slightly expand the barrel.
The burnishing is then accomplished by grasping the 'T' handle and rotating the barrel to burnish and raise the dent or distorted area. Loosen the expansion pin, remove the barrel, and for most jobs the repair is completed. If further action is needed repeat the above procedure applying a little more expansion to the barrel.
A critical factor in any valve work is to keep metal removal to an absolute minimum. Scrapers, cutters, and heavy lapping can all lend themselves to extensive cutting, whereas our valve burnishing tool works to rub and disperse the high spot of the dent. Another benefit with our tool is that it often eliminates any final lapping, which is rather labor intensive considering the time it takes to disassemble the horn, lap, thoroughly rinse and brush out the compound, and then reassemble.
The #2510 Standard Valve Burnishing Tool comes with:
Barrels are ordered separately (see #2515ST Valve Burnishing Barrel) and are sized to match piston diameter (specify size when ordering). The Standard Valve Burnishing Tool will work for all barrel diameter sizes up to 1.0" (25.4mm). Sizes larger than 1.0" require our #2509 Large Valve Burnishing Tool.