740 型增壓泵控制閥是一款雙腔結(jié)構(gòu)的液壓驅(qū)動隔膜式
水力控制閥，具有主動止回功能，可通過電信號控制全
開或關(guān)閉。閥門在水泵啟閉時發(fā)揮隔離系統(tǒng)和水泵的作
用，防止產(chǎn)生水錘。
產(chǎn)品特性和優(yōu)點(diǎn) 內(nèi)蒙古  海南  三亞  ?？? 儋州   廣州 深圳  廈門   南寧   新疆   貴州  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
主要可選功能特性
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