Siemens Building Technology 599-02066 Valve 320788-703 you can check for continuity

you can check for continuity and resistance across the coil leads

This Fasco motor features a 5/16-inch diameter x 3-inch long shaft

check the first switch (M1-M2) of the sequencer

making it a preferred choice for retrofitting fan status monitoring and pump loss of flow detection

Siemens Building Technology 599-02066 Valve 320788-703 you can check for continuityThe Siemens 599 02066 is a rugged 3 way mixing valve from the Powermite 599 MT Series, engineered for precise temperature control in demanding terminal unit applications. This 1 2 inch NPT globe valve features a forged brass body and brass trim, rated at ANSI Class 250 to ensure high pressure integrity in hydronic systems. With a 1. 0 Cv flow coefficient and a linear flow characteristic, it provides the incremental control required for fan coils,