通过两根液控管线分别打压和泄压，靠开启和关闭总成间的压差实现开关。 水嘴调节级数是通过液压油量和压力共同识别到达指定水嘴的，安全、可靠。

主要特性 

◎ 带有机械锁使工具处于关闭状态下，整个管柱受内压或外压不会自动开启；

◎ 工具处于关闭状态下，底部金属密封及辅助密封系统保证了工具的整体密封；

◎ 工具处于分级开启状态下，金属密封与橡胶密封的组合保证级与级之间密封的可靠。

HYDRAULIC CONTROL MULTISTAGE  FLOW CONTROL VALVE

Product Description: The two hydraulic control pipelines are used to pressurize and relieve pressure respectively, and the switch is realized by opening and closing the pressure difference between the assemblies. The adjustment stage of water nozzle is identified by hydraulic oil quantity and pressure  to reach the specified water nozzle, which is safe and reliable.

FEATURES

◎ With mechanical lock, the tool will not open automatically under internal or external pressure when the tool is closed;

◎ When the tool is closed, the bottom metal seal and auxiliary sealing system ensure the overall sealing of the tool;

◎ When the tool is opened in stages, the combination of metal seal and rubber seal ensures the reliable sealing between stages.

Note: Other specification products are available.