Hydrotherm BM 3354 Coupling 30067439 890 the 068U2164 is internally equalized the 068U2164 is internally equalized You must remove the sensor head to access the setting ring ensuring a precise mechanical interface that eliminates the risk of bypass or pressure drops this replacement coupling ensures the structural integrity of the secondary loop or main header connections
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Hydrotherm BM-3354 Coupling 30067439-890 the 068U2164 is internally equalized