check butterfly valve, using hydraulic oil source for operation. Is the latest generation of hydraulic control butterfly valve. It has both cut-off and check function can replace two valves with one valve, and can be adjusted according to the pre-programmed program, divided into fast closing and slow closing two stages of action to achieve valve closing, for sudden power failure or accident stop pump process caused by the career of water hammer harm and medium backflow caused by the pump unit reverse has significant elimination and inhibition effect. It is an effective equipment to ensure the safe and reliable operation of pump unit and pipe network system. |