Resideo PA404A1033 Pressuretrol Controller
Pressuretrol Controller, SPST Switching, .5-9 Psi Adjustable Pressure Range, 1-5 Psi Adjustable Differential Range, 20 Psi Maximum Safe Operating Pressure, 1/4" Female Threads, Stainless Steel Diaphragm, Used with Steam Heating Boilers
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