Weil McLain 635-100-003 Air Vent Els PW 17895 While commonly cited for Ultra

While commonly cited for Ultra 310 and Ultra 80 Series 1-2 models

and solid debris

ensuring compatibility with various York

Enclosed Protection: The rugged housing prevents contact contamination

Reliable Overheat Protection: Critical for systems experiencing furnace 4 red flashes or 11-flash error codes related to limit circuit issues

Weil McLain 635-100-003 Air Vent Els PW 17895 While commonly cited for UltraThe Weil McLain 635 100 003 Automatic Air Vent is a critical component for maintaining hydronic system efficiency by ensuring the continuous removal of trapped air. Designed for high performance residential and commercial boilers, this #400 series air vent features a 1 2" NPT connection and is engineered to handle demanding operating conditions. With a maximum pressure rating of 150 PSI and a maximum temperature threshold of 240F, this brass automatic