Hammer Unions and Weco Unions - New-Line Hose and
They are commonly found in chemical plants, on marine dredging vessels, in strip mines and in the oil industry. The colour coding system on Hammer Unions represent the different configurations and pressure ratings (Fig #'s are also normally stamped on the union as well); pressures range from 1,000-15,000 psi depending on the size and configuration.
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