原文：
　 　动态阻力平衡阀即ZLY型差压/流量控制阀，是一种新型平衡阀。它是一种既能控制流量，又能控制压差的一体的多功能阀门，其用转换阀来实现流量控制和压差控制的转换。当流量阀河北同力动态阻力平衡阀使用时，可具有流量阀的所有功能，直接简便的根据设计来设定流量，阀门在水的作用下，自动xx管线剩余压头及压力波动引起的流量偏差，无论系统压力怎样变化，均可保持设定流量不变，有效地解决管网的水力平衡失调问题。当压差阀使用时，支持用户自主调节，恒定用户进出口压差，有助于稳定系统运行，转换阀又可做调节压差使用。动态阻力平衡阀（差压/流量控制阀）的这些功能使流量调节一次完成，把系统平衡调节变为简便的流量分配，有效的解决管网的水力平衡失调，可能节电15%以上。 动态阻力平衡阀的功能 　　动态阻力平衡阀有三种功能：自力式流量阀功能、手动平衡阀功能、自力式压差阀功能，分别实现水泵三种运行模式的不同转换。定流量运行时用自力式流量阀功能；以热源为主变流量运行时使用手动平衡阀功能；以用户为主动变流量运行时转换成自力式压差阀功能。避免热网频繁更换阀门，减小供热成本。 动态阻力平衡阀的性能与特点 　　1.该阀为双阀瓣结构，不平衡力小，结构紧凑。 　　2.能自动恒定用户压差，吸收外网压力波动，支持被控系统自主调节。 　　3.控制导管前端安装截断阀，具备自动xx堵塞功能。 　　4.采用混压技术，无级调节，控制压差可调范围大。 　　5.压差标定xx，调节精度高。 　　6.采用外导压结构，拆装方便。 　　7.阀口、阀芯全铜。 动态阻力平衡阀的材质与寿命 　　1、阀体：优质灰铸铁； 　　2、阀体全塑处理防腐； 　　3、弹簧：不锈钢； 　　4、腊片：三元乙丙埋纤； 　　5、阀芯：黄铜； 　　6、设计寿命：10年以上；

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译文：
Dynamic resistance that ZLY type differential pressure balance valve / flow control valve, is a new balance valve. It is a means of controlling traffic, and can control the pressure of a multifunctional valve, use of transformation to achieve flow control valve and pressure control of the conversion. When the flow valve Hebei balancing valve with the ability to use the dynamic resistance, may have all the features of flow valve, direct and easy to set up according to the design flow, the valve under the action of water, automatically eliminating the remaining pipes pressure head and pressure fluctuations flow deviation, no matter how the pressure changes in the system may maintain a set flow rate unchanged, effectively address the imbalance between the hydraulic pipe network problems. When the pressure valve used to support users self-regulating, constant pressure drop users, help stabilize the system operation, the conversion differential pressure regulating valve may also make use of. Dynamic Balance valve resistance (differential pressure / flow control valve) of these features make flow control a complete balance of the system into a simple flow distribution regulation, effective solution to the water pipe network imbalance may be saving more than 15%. Dynamic resistance of the functions of balancing valve Dynamic resistance balance valve has three functions: Self-flow valve function, manual balancing valve function, Self-pressure valve function, respectively, of pump conversion of three different operating modes. Constant Flow run-time function with self-operated flow valve; to variable flow operation of the main heat source to use manual balancing valve function; to the user for the active run-time variable flow into Self-pressure valve functions. To avoid frequent replacement of the valve heating network, reducing heating costs. Dynamic balancing valve performance and features of resistance 1. The valve for the double-disc structure, unbalanced force is small, compact structure. 2. Can automatically constant user pressure to absorb pressure fluctuations outside the network to support the independent regulator charged with the system. 3. Control the catheter tip to install cut-off valve, with automatic elimination of blocking function. 4. With mixed compression technology, non-adjustable, adjustable pressure control is large. 5. Pressure calibration accuracy, precision adjustment. 6. By external pressure leading structure, easy disassembly. 7. Valve port, valve core copper. Dynamic resistance of the material and life balancing valve 1, Body: high quality gray cast iron; 2, dealing with anti-corrosion plastic body; 3, spring: stainless steel; 4, wax tablets: EPDM buried fiber; 5, Spool: Brass; 6, Design Life: 10 years;