The butterfly valves can be operated automatically through actuator or manually with the handle.
The handle blocks the valve in the "open" or "closed" Position, certainly there are the other positions available.
The actuator pushes piston of axial movement into 90 degree so that it controls butterfly valve.

-Connection mode: weld, clamp, thread, flange
-Piping standard: DIN, SMS, RJT, ISO, IDF, 3A
-Available in sizes DN25(1") to DN200(8")
-The size of multi-position handle up to DN100(4")
-The size of pull handle up to DN25(1") to DN200(8")
-Manual handle, pneumatic actuator and electric actuator can be exchangeable with each other
-Max.pressure: 1.0MPa(DN25-DN100)，0.8MPa(DN125-DN150)
-Min.pressure: 0.02 MPa
-Operating temperature: -10℃  to +120℃(EPDM)
-Valve body: Stainless steel 316L/304(Forged)
-Butterfly plate: Stainless steel 316L/304(Forged)
-Washer and gasket: EPDM, FPM
-Handle: Stainless steel 304/PP