Weil McLain 635-100-003 Air Vent Els PW 17895 Always handle by the ceramic

Always handle by the ceramic base or use clean gloves

Ensure the sampling holes face the airflow and the end cap is securely installed to maintain the necessary differential pressure for sensor activation

making it a reliable choice for HVAC zone control and terminal unit applications

not a line pressure regulator for high-pressure systems

Weil McLain 635-100-003 Air Vent Els PW 17895 Always handle by the ceramicThe 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