1.stem:plastic,metal 2.dosage:25ul,50ul,75ul,100ul,120ul,150ul 3.actuator:L-actuator,round actuator 4.mounting cup:tinplate 1 inch metering valveWe supply all kinds of metering valve and continuous valve1.stem:plastic,metal2.dosage:25ul,50ul,75ul,100ul3.actuator:L-actuator,round actuator4.mounting cup:tinplate with transparent coating 1 inch metering valve