Resideo - Honeywell Home 121371B Aquastat Sensor Well AssemblyThe Aquastat Sensor Well Assembly 121371B from Resideo (Honeywell Home) delivers precise immersion and capillary sensing for boiler and hydronic heating systems. Designed for durable copper construction, this sensor well ensures accurate temperature readings in demanding environments. With a 3 4 inch threaded connection, 3 8 inch bulb, and a 1 1 2 inch insulation depth, it fits a wide range of aquastats and provides robust performance in high

Enclosure/Connection: NEMA 1

6" housing diameter for versatile installation

Wetted Material: Silicon

Type: Cartridge

Easy installation with standard mounting and wiring

It includes O-rings (0005-5122 / 0005-5117) to ensure a tight seal

230V operation matches standard HVAC power supplies

35 PSI (vessel)

It’s ideal for maintenance or repair projects

helping to prevent air binding

The Field Controls CV-5VR Power Venter is built for dependable venting in compatible venting systems

ACSH960703BX