740 型增压泵控制阀是一款双腔结构的液压驱动隔膜式
水力控制阀，具有主动止回功能，可通过电信号控制全
开或关闭。阀门在水泵启闭时发挥隔离系统和水泵的作
用，防止产生水锤。
产品特性和优点 内蒙古  海南  三亚  海口  儋州   广州 深圳  厦门   南宁   新疆   贵州  云南
n Line pressure driven
? Independent operation
? No motor required
? Long term drip tight sealing
n Solenoid controlled
? Low cost wiring
? Wide ranges of pressures and voltages
? Normally Open or Normally Closed
n Check feature (spring loaded type)
? Replaces line sized check valve
? Fail-safe mechanical closure
n In-line serviceable – Easy maintenance
n Double chamber
? Full powered opening (option “B”) and closing
? Non-slam opening and closing characteristic
? Protected diaphragm
n Balanced seal disk – High flow capacity
n Flexible design – Easy addition of hydraulic features
主要可选功能特性
n Booster Pump Control Valve
with Independent Lift Check - 740-2S
n Pressure sustaining – 743
n Pressure reducing – 742
n Flow control – 747-U
n Pump circulation control – 748
n Deep well pump electric control – 745
n Full powered opening & closing – 740-B
n Electronic control – 740