产品描述 Product Description

作泄压阀时：可将给水管路中超过先导阀安全设定值的压力释放掉，并维持管路压力在一安全设定值之下，以防止管路中高压或突压毁损管线或设备，可用于高层大楼消防测试循环系统以及其他给水平衡系统之泄压用。

When acting as a pressure relief valve, it can release the pressure in the water supply pipeline that exceeds the safety setting value of the pilot valve and maintain the pipeline pressure below a safety setting value to prevent high pressure or sudden pressure in the pipeline from damaging the pipeline or equipment. It can be used for pressure relief in high-rise building fire testing circulation systems and other water supply balance systems

本阀作持压阀时可维持主阀上游供水压力于某一设定值以上，以保障主阀上游供水区的压力，主要用于城市低压供水区域。

When used as a pressure holding valve, this valve can maintain the upstream water supply pressure of the main valve above a certain set value to ensure the pressure in the upstream water supply area of the main valve. It is mainly used in urban low-pressure water supply areas

压力等级：PN10（调节范围0.3-0.9MPa）

                PN16（调节范围0.5-1.4MPa）

                PN25（调节范围0.5-2.4MPa）

规格：DN40~DN500 

工作原理 working principle

进口过滤活塞式安全泄压阀当给水管路中压力超过泄压阀设定压力时，泄压阀自动开启快速泄压，保护管线安全，也可作持压阀用，保障主阀上游的供水压力。能准确保持不变的安全设定压力，一旦超压，泄压阀迅速打开，及时泄压。关闭平稳可靠，消除压力余波。

When the pressure in the water supply pipeline exceeds the set pressure of the relief valve, the imported filter piston safety relief valve automatically opens for quick pressure relief, protecting pipeline safety. It can also be used as a pressure holding valve to ensure the upstream water supply pressure of the main valve. Accurately maintaining a constant safety set pressure, once overpressure occurs, the relief valve quickly opens and releases pressure in a timely manner. Smooth and reliable closure, eliminating pressure ripple.

全开状态 Fully open state

当水泵启动后，阀门进水口压力上升，压力水一方面推动主阀瓣开启，另一方面通过导管系统进入活塞下腔，而活塞上腔的水通过导管系统泄入压力级的阀门出水口，而阀门在二合力的作用下缓慢开启

When the pump is started, the pressure of the valve inlet rises, and the pressure water on the one hand pushes the main valve disc to open, on the other hand, it enters the piston lower chamber through the catheter system, and the water from the piston upper cavity leaks into the valve outlet of the pressure level through the catheter system, and the valve slowly opens under the action of the two resultant force.?

全闭状态 Fully closed state

当水泵停机后，阀门中的水流速度降低，在接于近零时，主阀板在弹簧力和自身重力作用下快速关闭，而阀后的压力水通过导管系统返回到活塞上腔，并推动固定在阀杆上的小阀板缓慢关闭。

When the pump is shut down, the water flow speed in the valve is reduced. At nearly zero, the main valve plate is quickly closed under the action of spring force and its own gravity, while the pressure water behind the valve is returned to the piston upper cavity through the catheter system, and then the small valve plate fixed on the valve stem is pushed to be slowly closed.

结构和主要零件材质 Structure and main component materials

多功能过滤活塞式控制阀系列在主阀内部装有过滤网结构与多功能水力控制阀+Y型过滤器的配套装置相比，大大节省阀门的成本和安装空间。阀门的驱动装置采用双腔控制结构，即活塞下腔与下游处单独隔出一个控制室。本系列阀门是通过主阀内双腔与外装的导阀、导管、调节阀等连接组合成使用场所、目的及功能不同的阀门。此外，还在活塞上腔的阀盖上配备了调节螺杆装置，通过调节螺杆可以适当的调节流量或者关闭阀门。

The multifunctional filtering piston control valve series is equipped with a filter mesh structure inside the main valve, which greatly saves the cost and installation space of the valve compared to the supporting device of the multifunctional hydraulic control valve and Y-shaped filter. The driving device of the valve adopts a dual chamber control structure, which means that the lower chamber of the piston is separated from the downstream by a separate control room. This series of valves are assembled into valves with different use places, purposes and functions through the connection of the main valve's internal double chamber and the external pilot valve, conduit, regulating valve, etc. In addition, an adjusting screw device is also equipped on the valve cover of the piston upper chamber, which can adjust the flow rate or close the valve appropriately.

阀顶设有行程调节装置，可根据管道压力流量的大小调节主阀盘的开启高度，从而可达到最佳的使用效果。在此位置可设置开度指示装置或信号反馈装置。

The valve top is equipped with a stroke adjustment device, which can adjust the opening height of the main valve disc according to the pressure and flow rate of the pipeline, thus achieving the best use effect. At this position, an opening indication device or signal feedback device can be set

采用主副密封结构，主密封阀盘随介质的压力的大小自动打开和关闭。副密封阀盘受控制室介质的影响，随水锤峰值到达时间的长短自动关闭，从而消除水击现象。

Adopting a main and auxiliary sealing structure, the main sealing valve disc automatically opens and closes with the pressure of the medium. The secondary sealing valve disc is affected by the medium in the control room and automatically closes with the time when the water hammer peak reaches, thereby eliminating the phenomenon of water hammer

安装示意图 installation diagram