Johnson Controls WEL14A-603R Well Assm

The Johnson Controls WEL14A-603R Well Assm is a high-performance immersion well designed for professional HVACR contractors requiring precise temperature sensing in fluid applications. Featuring a 1/2 inch NPT external thread brass connector and a 5-13/16 inch copper shank, this assembly is engineered to protect remote bulb temperature controls and A19 series sensors from high-pressure environments up to 300 psig. The 0.430-inch inside diameter (ID) provides a snug fit for 3/8-inch bulbs, ensuring optimal thermal transfer and rapid response times without direct contact with the system media.

Built for durability in demanding industrial settings, the WEL14A-603R utilizes silver solder joints and a brite-dip copper finish to resist corrosion and chemical degradation. This direct mount well includes a securing setscrew and a phenolic bushing to minimize heat conduction to the control head, maintaining calibration accuracy. It is a vital component for technicians servicing TE-6000 or TE-6300 series sensors, providing a reliable thermowell solution for boilers, chillers, and large-scale process piping where liquid temperature measurement is critical to system performance.

• High Pressure Rating: Rated for operation up to 300 psig, making it suitable for high-demand hydronic and steam applications.
• Superior Thermal Conductivity: The copper bulb well construction ensures minimal lag in temperature readings for tighter staging control.
• Universal 1/2" NPT Connection: Standard 1/2 inch well assembly threading allows for seamless integration into existing pipe taps and thermal tanks.
• Sensor Protection: Shields sensitive bulb elements from flow turbulence and harsh scale buildup, extending the service life of Johnson Controls A19 controllers.
• Temperature Resilience: Sustains accurate monitoring across a wide operating range from -35?F to 250?F.

What bulb size is compatible with the .430 ID?
This well is specifically designed for 3/8-inch diameter sensing bulbs, common in A19, A28, and A36 series temperature controls.

Can this be used in corrosive water systems?
The copper shank and brass hex base are highly resistant to standard water treatment chemicals; however, for highly corrosive industrial fluids, a stainless steel variant may be required.

Does it include mounting hardware?
Yes, the WEL14A-603R comes complete with the necessary setscrew and retaining bushing for immediate field installation.

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.