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The McDonnell & Miller 127100 is a head assembly designed for use with the 25-A water feeder. This replacement part fits 25A series water feeders and is essential for maintaining optimal operation in hydronic systems.
This head assembly is float-operated and features proportional feed action. It provides a positive seal with a soft seat to prevent leaks.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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