WEL14A-602R Johnson Controls Bulb Well

Overview

The Johnson Controls WEL14A-602R is a professional-grade thermowell assembly engineered to securely house and protect temperature sensing bulbs in hydronic and HVAC control applications. It allows remote bulb temperature controls or sensors to be inserted into fluid-filled pipes, tanks, or vessels, enabling safe maintenance, removal, and replacement of the sensing elements without needing to drain the system. Designed to shield sensors from direct contact with pressurized media, it provides high thermal conductivity for precise environmental and process control.

Features

• High Thermal Conductivity: Copper tube construction ensures rapid thermal response and accurate temperature monitoring.
• Robust Corrosion Resistance: Durable brass connector paired with a brite dip plating finish provides long-lasting protection against oxidation and wear in demanding environments.
• Leak-Proof Seal: Features silver solder joint construction to maintain a reliable, high-pressure seal.
• Media Protection: Isolates sensing elements from direct fluid or suction line contact, preventing physical damage and tampering.

Specifications

• SKU/Model: WEL14A-602R
• Brand: Johnson Controls
• Total Length (A Dimension): 4-15/16 inches
• Inside Diameter (C Dimension): 0.430 inches
• Thread Size (E Dimension): 1/2-inch NPT outside thread
• Tube Material: Copper
• Connector Material: Brass
• Maximum Temperature: 250 degrees Fahrenheit
• Maximum Pressure: 300 PSIG
• Solder Joint Type: Silver
• Finish: Brite Dip Plating
• Compatibility: Designed for 3/8-inch Style 1 sensing bulbs

Applications

• Hydronic Heating Systems: Perfect for fluid temperature monitoring in commercial and industrial boiler loops.
• HVAC and Mechanical Systems: Used in commercial air-side monitoring and environmental control installations.
• Process Control and Commercial Refrigeration: Frequently paired with Penn temperature controls (such as the A19, A70, and A72 series) and Johnson Controls TE-6000 and TE-6300 sensors in liquid lines or suction lines.