This disc is suitable for two-position steam service up to 70 psi

The most common symptom is the burner lighting for 2–5 seconds and then immediately shutting down

allowing for rapid field replacement without re-wiring the entire circuit

Easy Installation: Standard terminal configuration allows for a direct "plug-and-play" replacement on 220V-240V 50/60Hz systems

This configuration is essential for maintaining the MERV rating integrity of the system and optimizing overall airflow

Watts 0590715 Air Vent This disc is suitable forThe Watts 0590715, also known as the FV 4M1 1 8, is a heavy duty automatic air vent designed for high performance venting in residential and commercial hydronic heating systems. Featuring a rugged brass body and cover, this 1 8 inch NPT vent is engineered to purge trapped air from hot or cold water distribution lines automatically. With a maximum pressure of 150 PSI and a temperature rating up to 240F, it is a reliable choice for demanding