High Quality 175psi 10bar 380v 20a 3 Phase 4-port Air Compressor Pressure Switch Control Valve 5-8bar - Pneumatic Parts - AliExpress
NE-MA Italian Pressure Switch for 3-Phase Compressors, 4-Way Conenxion 1/4-Inch + Switch : Amazon.com.be: Tools & Home Improvement
Threephase pressure switch type Export Special
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Pressostato Compressore D'aria a 4 Vie Pressostato Sostituzione Interruttore di Controllo Intervallo di Pressione 0,5-0,8MPA, 0-12BAR, 0-180PSI : Amazon.it: Fai da te