Motorized pinch valve PPV series Proportional Pinch Valve Selection and SpecificationModelsSupply voltageControl signalTube Max ODWiringOpen/Close StatusPPV25I12-24 VDC0~20mA Max 7mm 4-wireFully Openwhen 0mAPPV25V0~5VDCFully Openwhen 0VPPV31I0~20mA Max 11mmFully Openwhen 0mAPPV31V0~5VDCFully Openwhen 0VPPV52I0~20mA Max 21mmFully Openwhen 0mAPPV52V0~5VDCFully Openwhen 0V Welcome to contact us for further check.