Home / Markets / WEAVALVES / Products / Valves / Valves / Butterfly / Automated Automated Quarter-turn butterfly valves available with electric or pneumatic actuators. Applications include valve automation. Capable of being configured to fit any application. Series WE20 Lug or Wafer, EPDM or PTFE, Electric or Pneumatic ActuatorsButterfly Valve has a cartridge seat design, which alleviates installation problems associated with common "dove tail design" seats. Applications include valve automation.