Clean Brass 

Clean Brass is an alloy of copper and zinc. Some common uses of brass are plumbing fixtures such as faucets and knobs. Also water meters, gun shells and engraving plates are typically brass. In addition, some high pressure valves, bushings, and pump bowl impellers are brass. It must be free of any other contaminants including: magnetic or non-magnetic metal, insulation, rubber, plastic to get a clean price. If these contaminets are left on it will be bought at a Dirty brass price witch pays less than a clean price.