(定流量阀)进口动态平衡阀技术参数 Technical paramete

1.压差低于最小工作压差时，阀芯全开，与孔板功能一致，流量随压差增大而增大（图1）When the pressure difference is lower than the minimum working pressure difference, the valve core is fully opened, which is consistent with the function of the orifice plate, and the flow increases with the increase of the pressure difference (Fig. 1)

2.压差在工作压差范围内时，阀芯根据系统压差的变化改变开度，保证设计流量在±5%的偏差范围内变化（图2）RETZ When the pressure difference is within the working pressure difference range, the valve core changes the opening according to the change of the system pressure difference to ensure that the design flow changes within the deviation range of ± 5% (Fig. 2)

3.压差大于最大工作压差时，阀芯开度最小，与孔板功能一致，流量随压差增大而增大（图3）When the pressure difference is greater than the maximum working pressure difference, the opening of the valve core is the smallest, which is consistent with the function of the orifice plate. The flow increases with the increase of the pressure difference (Fig. 3)

4.在工作压差范围内，流量保持恒定（图4）The flow rate remains constant in the range of operating differential pressure (Figure 4)

尺寸：2"-20"  Size: 2 "- 20"

工作温度：0~110℃  Working temperature: 0 ~ 110 ℃

承压等级：PN16/PN25 Pressure bearing grade: PN16 / PN25

误差：±5% Error: ± 5%

压差范围∶14-220KPa，35-410KPa  Pressure difference range: 14-220kpa, 35-410kpa

工作介质∶冷热水、乙/丙二醇溶液 Working medium: cold and hot water, ethylene / propylene glycol solution

连接方式∶法兰、对夹连接 Connection method: flange and clamp connection

(定流量阀)进口动态平衡阀 性能特点∶ Performance characteristics

1.动态平衡∶当系统压差产生波动时，阀芯自动调整可变流道开度，能实现被控区域恒定流量RETZ Dynamic balance: when the pressure difference of the system fluctuates, the valve core automatically adjusts the opening of the variable flow channel, which can realize the constant flow in the controlled area

2.精确校准的阀芯可确保流量恒定在±5%的偏差范围内 The precisely calibrated spool ensures that the flow is constant within ± 5% of the deviation

3.流量出厂设定，每个尺寸具有多个压差范围可供选择  Flow factory setting, each size has multiple pressure difference ranges for selection

4.不需现场调试，减少人力成本  No on-site commissioning is required to reduce labor cost

5.系统变化后，不需对系统进行再平衡设计  After the system changes, there is no need to rebalance the system

零部件材质 Component material

①阀体：球墨铸铁 Valve body: ductile iron

②阀胆：阀芯：不锈钢/青铜，弹簧：不锈钢 Valve liner: valve core: stainless steel / bronze, spring: stainless steel

③O型圈：EPDM O-ring: EPDM

④测量嘴：不锈钢/黄铜 Measuring nozzle: stainless steel / brass

⑤吊环螺钉∶不锈钢304 Eyebolt: stainless steel 304

压降值的计算：与动态流量平衡阀工作的最小压降值相同（14KPa或35KPa）Calculation of pressure drop value: the same as the minimum pressure drop value of dynamic flow balance valve (14kpa or 35kpa)

计算实例：所需压降=动态流量平衡阀工作的最小压降14或35KPa泵的扬程=以上所需压降+系统其他的压降 Calculation example: required pressure drop = minimum pressure drop of dynamic flow balance valve working 14 or 35kpa pump head = above required pressure drop + other pressure drops of the system

安装说明 Installation instructions

1.根据阀门选型正确使用阀门，避免用错流量及压差 Use the valve correctly according to the valve selection to avoid wrong flow and pressure difference

2.注意系统管道排气，系统存气，可能会引起介质堵塞、调节功能失效、或噪声过大 Pay attention to the exhaust of the system pipe and the air in the system, which may cause medium blockage, regulation function failure or excessive noise

3.该阀门可水平安装亦可垂直安装，安装过程中应注意介质流向，方向装反会失去功能 The valve can be installed horizontally or vertically. Pay attention to the flow direction of medium during installation. If the direction is reversed, it will lose its function

4.阀门进水端建议加过滤器或清洗管路，可避免大颗粒杂质堵塞阀门控制元件 It is recommended to add a filter or clean the pipeline at the water inlet end of the valve to avoid blocking the control element of the valve with large particles

5.注意检测孔的保护，碰掉或变形会引起泄露或以后的维护困难 Pay attention to the protection of the inspection hole. If it is touched or deformed, it will cause leakage or later maintenance difficulties