The unit features direct flame current measurement ports

it is precision-formed for specific Weil-McLain models

maintaining original equipment performance without field modifications

Enhanced thermal contact prevents overshoot and protects expensive system components from thermal stress

Integration with other series may result in improper stroke or seat loading

Conbraco 37LF-201-01 Valve The unit features direct flameThe Conbraco 37LF 201 01 is a lead free 1 2" vacuum relief valve engineered for heavy duty commercial and residential water heating systems. This model is the direct replacement for 37 201 01, providing a seamless retrofit into existing piping layouts. Designed to automatically admit air into the supply system, it effectively prevents vacuum conditions that can lead to tank collapse or siphoning. It features a high 15 CFM venting capacity and is rated