... valve disc is provided with a wing communicating plate with perfect cavitation-resistance. The motor operation type is suit Comb Type Regulating ... ValvevStandard: GB, BS, ISO, DIN, AWWAvSuitable temperature: ≤80 celsiusvNominal pressure: PN0.61 ... class AvDriving type: manual, motervFEATURES: This valve disc is provided with a wing communicating plate ... TVF Comb Type Regulating Valve