the HVAC duct pressure sensor includes a common high-pressure sample connection and two individual low-pressure connections

Reliable Sealing: Features a rotating Buna-N ball plug and EPDM O-rings for tight shut-off and resistance to common hydronic additives

Increasing the VA (Volt-Amp) rating is acceptable as it allows the transformer to handle a higher current load more efficiently

ensuring stable superheat control across a wide range of evaporation temperatures

this AC current transducer allows for installation without disconnecting the primary conductor

Armstrong International B1669-4 Pressure Change Assembly Els PW 17895 the HVAC duct pressure sensorThe Armstrong International B1669 4 Pressure Change Assembly is a precision engineered internal component designed to restore the peak performance of your steam system. Featuring a 1 8" orifice, this assembly is vital for maintaining the mechanical integrity and discharge capacity of inverted bucket steam traps. It is fully compatible with a wide range of Armstrong models, including the 211, 310, 800, 811, TVS 811, 880, 881, 981, and EM Series.