Utica-Dunkirk 1580006 Air Purge 328140-751 the 25W77 is fabricated from

the 25W77 is fabricated from corrosion-resistant material to withstand continuous duty cycles in high-static pressure environments

This OEM replacement part features a rugged two-bolt cast iron housing and high-grade steel balls to ensure maximum durability and minimal friction during high-RPM operation

Never use a drill bit or wire

Designed with a 90-degree straight-through body and multi-position mounting capabilities

while the Raypak 24V switching relay architecture ensures reliable activation of critical components like circulating pumps

Utica-Dunkirk 1580006 Air Purge 328140-751 the 25W77 is fabricated fromThe Utica Dunkirk 1580006 Air Purge is a vital component for maintaining the hydraulic integrity of residential and commercial boiler systems. Engineered for high efficiency air removal, this 1 8" NPT vent air purge effectively eliminates trapped pockets of air that cause pump cavitation, reduced heat transfer, and system "banging" or gurgling. As a field proven boiler air vent replacement, this part ensures the circulatory loop remains pressurized