DFD 系列电磁隔膜泵 DFD type electrical diaphragm metering pump 防腐塑料外壳 Anticorrosive plastic casing 全PTFE隔膜 PTFE diaphragm 按IP55防护等X设计 Protection class: IP55 多种材质的泵头可选:PP,PVC,PTFE,SS316 Pump head: PP, PVC, FTFE, SS316 双球单向阀 Suction and delivery valves: with two balls each one 频率调节:10-100% Manual control the stroke frequency from 10-100%, LED display the normal frequency (at running or stop). 手动调节、面板显示。 Stand power supply: 220vac, 50Hz single phase