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The McDonnell & Miller 332800 is a quick hook-up fitting designed for precise compatibility with control models 64A, 47, and 47-2. This essential HVAC component facilitates straightforward installation directly into gauge glass tappings, seamlessly integrating the gauge glass into the boiler system.
McDonnell & Miller's model MA259 simplifies the installation process for essential boiler controls by allowing direct attachment to the boiler's gauge glass tappings, promoting operational efficiency and stability.
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