Oiling valves in olds cornet2/13/2023 ![]() Similarly, squirt oil over each valve to remove any visible grime. Hold the horn over a cloth or newspaper and squirt enough oil into the casings to rinse off any contamination. To reapply Ultra-Pure Professional Valve Oil, first take the valves out of the casings. However, when you are first breaking in new valves, it is best to clean and reapply Ultra-Pure Professional Valve Oil each day for a week or two. ![]() Ultra-Pure Professional Valve Oil will last much longer than regular valve oils, and it is not unusual for it to last more than one week. See our tips on how to oil trumpet valves. When putting the valve back in its casing, do not rotate it since this can cause excessive wear. Gently shake or blot off any excess oil onto the cloth or newspaper. Hold the valve over a cloth or newspaper and coat it with plenty of oil. Cleaning with a rod is not recommended since it can scratch the metal casings and cloths can leave lint or other contamination. Let the horn and valves completely air dry. Also, clean the bottom valve caps the same way. ![]() Use a valve casing brush to scrub out old oils by holding the valve casing under running water while sudsing out old oils and grime. Before using Ultra-Pure Professional Valve Oil, clean your valves and casings completely with lemon-type liquid detergent and water.
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