Johnson Controls WEL11A-601R Well 30067439-890 it uses the same union

it uses the same union dimensions

This OEM replacement part is engineered to withstand the rigorous demands of steam and fluid process control

which prevents rapid cycling and protects the heater elements from premature fatigue

The 1/4" SAE 45-degree internal thread includes a built-in depressor (Style 47) for direct mounting

While the Class F coil handles heat well

Johnson Controls WEL11A-601R Well 30067439-890 it uses the same unionThe Johnson Controls WEL11A 601R is a heavy duty copper bulb well designed for demanding fluid immersion applications. Engineered for use with remote bulb temperature controls and the A99 series sensors, this 1 2" NPT well ensures accurate thermal transfer while protecting sensing elements from corrosive or high pressure environments. Featuring a 2 3 8" insertion length and a . 299" inside diameter, it provides a precise fit for standard HVACR probes,