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The Maid O Mist No. 78 Auto-Vent is a reliable automatic air-eliminating valve for hydronic systems. This valve is made of brass and uses a float-operated mechanism with a Monel metal spring and Neoprene valve seat. It effectively removes air from hidden radiators, pipe lines, and tanks, ensuring smooth heating and cooling processes.
Ideal for eliminating air in hydronic water systems with a straightforward vertical mounting design.
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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