The Ward Suction unit capacity 600/1000/2000 ml is designed for minimum servicing and high efficiency. Regulator body which houses an ON/OFF knob, regulation knob, vacuum gauge graduated in mbar.The ON/OFF knob allows the operator to start or stop suction by turning the switch. With regulation knob operator can set the amount of vacuum required. The jar is made of polycarbonate transparent and unbreakable autoclave at 121deg.C. A Well proved fluid control trap ( Safety) fitted on the unit automatically and efficiently shut off vacuum fully, preventing the transfer of liquid to the vacuum regulator , pipeline and pump.