... transmissionRugged construction with o-ring system giving water and explosion proof.(optional : explosion proof/Eexd IIB T4, IP68)Hand wheel for ... internal electrical component from over heat caused by overload of valve.Removable drive bushing with under hungDrive bushing is removable type ... powder, Polyester, Munsell no. 5R 3.5 / 12 auti-explosion electric actuator for ball valve and butterfly ...