Honeywell 50001774-001 Immersion Well

The Honeywell 50001774-001 is a high-grade 304 stainless steel immersion well engineered for precision temperature monitoring in hydronic, boiler, and HVACR systems. Designed with a 5-inch insertion length and a standard 1/2" NPT external thread, this Honeywell immersion well assembly provides a robust, corrosion-resistant protective sleeve for temperature sensors, ensuring long-term thermal conductivity without exposing internal elements to the process fluid. It is the direct replacement part for the 50001774-001/U model, maintaining identical technical specifications for field installations. As a veteran-preferred HVAC temperature sensor accessory, it allows for easy sensor removal and maintenance without the need to drain the system. This well is specifically built for seamless compatibility with Honeywell C7021D2001, C7023D2001, and C7041D2001 temperature sensors, as well as several T775 2000 series probes. High-torque 1/2-inch threading ensures a leak-proof mechanical connection in pressurized lines, making it an essential component for demanding commercial and industrial thermal sensing applications.

• Durable Construction: Fabricated from 304 stainless steel to resist oxidation and scale buildup in hot or chilled water applications.
• Direct Fit Compatibility: Specifically designed to house 20K ohm NTC and PT1000 sensors used in Excel 10, 50, and 500 controllers.
• Simplified Maintenance: Features 1/2" internal threading to secure sensors, allowing for rapid diagnostics and component replacement.
• Thermal Response: Thin-wall stainless steel design optimizes heat transfer from the medium to the internal sensing element for accurate staging.

What is the difference between the 50001774-001 and the 50001774-001/U?
There is no functional or physical difference between these two parts. The "/U" suffix typically denotes "Unit" or "Universal" packaging for retail distribution, but the technical specifications and dimensions remain identical.

Can I use this well with other sensor brands like Johnson Controls or Ranco?
While designed for Honeywell C70 series sensors, this 5-inch stainless well is compatible with any 1/4" diameter probe that utilizes a 1/2" NPT fitting, including many Johnson A419/A421 and Ranco ETC series sensors.

Is thermal conductive compound required for installation?
For the most accurate temperature readings and fastest response times, applying a high-quality heat conductive paste to the sensor probe before inserting it into the well is highly recommended.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.