Robust Construction: The extruded aluminum frame resists corrosion and remains lightweight for easier overhead handling during HVAC zoning installs

The Schneider Electric (Erie) VS3427 Valve Body is a professional-grade 1" NPT 3-way zone valve engineered specifically for low-pressure steam applications up to 15 psi

The diagnostic LED blinks specific codes to identify issues such as flame signal loss

Comprehensive Maintenance: Replaces all wear-prone internal elastomers and moving parts effectively

LC1D18G7 is the cross for XTCE015B10A

Lochinvar & A.O. Smith 100110901 Window Observation 326070-701 Robust Construction: The extruded aluminumUpgrade your system monitoring with the Lochinvar & A. O. Smith 100110901 Window Observation assembly. This genuine OEM sight glass replacement is a critical component for service technicians performing routine combustion analysis or checking burner flame quality in high efficiency Lochinvar boilers and A. O. Smith water heaters. Designed to withstand the thermal stress of sealed combustion chambers, this durable observation port ensures an airtight