检测认证人脉交流通讯录
- 防腐塑料外壳 Anticorrosive plastic casing 全PTFE隔膜 PTFE diaphragm 按IP55防护等级设计 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
