External equalization is required for any system where a significant pressure drop occurs across the evaporator or through a distributor

How do I test the S1-025-27792-707 for continuity

and seat the blue spring carefully before re-calibrating the outlet pressure with a manometer

Enhanced Thermal Stability: Built from high-quality brass to resist corrosion and nozzle clogging in high-heat environments

When installed within the appropriate RS sensor housing

Weil McLain 511-330-080 Pilot Burner Assembly 30067439-890 External equalization is required forThe Weil McLain 511 330 080 Pilot Burner Assembly is a precision engineered OEM replacement part designed for reliable ignition in residential gas boilers. This natural gas pilot assembly is essential for maintaining the sequence of operation in Weil McLain CGi, CGs, and CGt series boilers. The kit includes the pilot burner, a pre installed orifice, and aluminum pilot gas tubing to ensure a seamless fit during field replacement. As a veteran