(定流量閥)進口動態平衡閥技術參數 Technical paramete

1.壓差低于最小工作壓差時，閥芯全開，與孔板功能一致，流量隨壓差增大而增大（圖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.壓差在工作壓差范圍內時，閥芯根據系統壓差的變化改變開度，保證設計流量在±5%的偏差范圍內變化（圖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.壓差大于最大工作壓差時，閥芯開度最小，與孔板功能一致，流量隨壓差增大而增大（圖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.在工作壓差范圍內，流量保持恒定（圖4）The flow rate remains constant in the range of operating differential pressure (Figure 4)

尺寸：2"-20"  Size: 2 "- 20"

工作溫度：0~110℃  Working temperature: 0 ~ 110 ℃

承壓等級：PN16/PN25 Pressure bearing grade: PN16 / PN25

誤差：±5% Error: ± 5%

壓差范圍∶14-220KPa，35-410KPa  Pressure difference range: 14-220kpa, 35-410kpa

工作介質∶冷熱水、乙/丙二醇溶液 Working medium: cold and hot water, ethylene / propylene glycol solution

連接方式∶法蘭、對夾連接 Connection method: flange and clamp connection

(定流量閥)進口動態平衡閥 性能特點∶ Performance characteristics

1.動態平衡∶當系統壓差產生波動時，閥芯自動調整可變流道開度，能實現被控區域恒定流量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.精確校準的閥芯可確保流量恒定在±5%的偏差范圍內 The precisely calibrated spool ensures that the flow is constant within ± 5% of the deviation

3.流量出廠設定，每個尺寸具有多個壓差范圍可供選擇  Flow factory setting, each size has multiple pressure difference ranges for selection

4.不需現場調試，減少人力成本  No on-site commissioning is required to reduce labor cost

5.系統變化后，不需對系統進行再平衡設計  After the system changes, there is no need to rebalance the system

零部件材質 Component material

①閥體：球墨鑄鐵 Valve body: ductile iron

②閥膽：閥芯：不銹鋼/青銅，彈簧：不銹鋼 Valve liner: valve core: stainless steel / bronze, spring: stainless steel

③O型圈：EPDM O-ring: EPDM

④測量嘴：不銹鋼/黃銅 Measuring nozzle: stainless steel / brass

⑤吊環螺釘∶不銹鋼304 Eyebolt: stainless steel 304

壓降值的計算：與動態流量平衡閥工作的最小壓降值相同（14KPa或35KPa）Calculation of pressure drop value: the same as the minimum pressure drop value of dynamic flow balance valve (14kpa or 35kpa)

計算實例：所需壓降=動態流量平衡閥工作的最小壓降14或35KPa泵的揚程=以上所需壓降+系統其他的壓降 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

安裝說明 Installation instructions

1.根據閥門選型正確使用閥門，避免用錯流量及壓差 Use the valve correctly according to the valve selection to avoid wrong flow and pressure difference

2.注意系統管道排氣，系統存氣，可能會引起介質堵塞、調節功能失效、或噪聲過大 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.該閥門可水平安裝亦可垂直安裝，安裝過程中應注意介質流向，方向裝反會失去功能 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.閥門進水端建議加過濾器或清洗管路，可避免大顆粒雜質堵塞閥門控制元件 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.注意檢測孔的保護，碰掉或變形會引起泄露或以后的維護困難 Pay attention to the protection of the inspection hole. If it is touched or deformed, it will cause leakage or later maintenance difficulties