Pay in 4 interest-free payments of $13.29 Learn more
Ships within 48 hours · Estimated delivery Sep 22 - Sep 27
local codes may require a 12A04 ball check device or 12A06 fixed orifice vent limiter for indoor installations
When replacing a regulator spring
Are the 311852 and 311852/U parts interchangeable
moisture buildup in the tubing
Repetitive trips often indicate restricted airflow
Watts 0590722 Air Vent local codes may require aThe Watts 0590722, also identified as the FV 4M1 1 2, is a high performance automatic air vent designed for reliable air elimination in closed hydronic heating systems. Engineered with a heavy duty brass body and cover, this valve facilitates the continuous purging of air from hot or cold water distribution lines, preventing air locks and system noise. Featuring a 1 2 inch male NPT connection, it is rated for a maximum pressure of 150 psi (10 bar) and
US$ 135.00
US$ 88.00
US$ 110.00
US$ 85.00
US$ 65.00
US$ 72.00
US$ 110.00
US$ 110.00
US$ 69.00
US$ 59.00