with a maximum supply pressure rating of 20 psig

The 2721-647 features a mid-point ground

With a 20-micron outlet pad

Does the RIBMU2C require a specific mounting track

this main burner is designed to work within the standard Lennox manifold assembly

McDonnell & Miller FS4-3RP-T Switch Els PW 29614 with a maximum supply pressureThe McDonnell & Miller FS4 3RP T (Part #114639) is a standard setting liquid flow switch engineered for heavy duty service in commercial HVAC and hydronic systems. This paddle flow switch features a 1" NPT connection and is designed to provide reliable equipment protection in chilled water, boiler, and process applications. Equipped with high sensitivity SPDT switch contacts, it seamlessly integrates into control circuits to cycle pumps, fire alarms,