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27" WC SPST switch
High Reliability: Standard spring return functionality ensures positive closure or opening on power interruptions
Versatile Voltage Compatibility: Rated for use with 120V
excessive vent run length
Johnson Controls C-2220-11 Pressure Selector Els PW 17895 27" WC SPST switchThe Johnson Controls C 2220 11 is a high performance pneumatic high low pressure selector designed for secondary control in multi zone HVACR systems. Functioning as a master module for low volume input, this unit effectively samples pressure signals from various pneumatic thermostats and controllers. It is engineered to select and transmit both the highest and lowest control pressure signals within a group, ensuring that heating and cooling equipment
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