| ： Product name : || 缓开快闭止回 阀 DY30BX slow-opening quick-closing check valve |
： Product model :
： Applicable medium :
Water, oil, Sewage, seawater
| Connection Type: || Flange |
： Applicable temperature : |
| 径 ： Nominal diameter : || 0-DN16 00 DN4 0-DN16 00 |
： Common materials :
Gray cast iron, ductile cast iron
： Technical consultation :
| 021-31007323 |
DY30BX 缓开快闭止回阀 概述 ： I. Overview of DY30BX slow-opening and quick-closing check valve :
缓开快闭 止回阀 包括阀体内设阀座、阀杆、以及与阀体连接的上阀盖与下阀盖等零件组成。 DY30BX slow opening and quick closing check valve consists of valve seat, valve stem, upper valve cover and lower valve cover connected to the valve body. There is a diaphragm cavity between the upper valve cover and the lower valve cover. A diaphragm is arranged in the diaphragm cavity, the diaphragm is connected to the central shaft, the other end of the central shaft is connected to the valve, and the valve is in contact with the valve seat. The water container communicates with the water inlet and outlet control holes of the upper valve cover, the water container and the upper valve cover are in throttling communication, and the water container and the upper valve cover are in one-way communication. ; 快速关闭，防止水锤产生。 The valve opens slowly to prevent current shocks and pressure shocks on the official website ; it closes quickly to prevent water hammer. No water quality requirements, can be used in sewage, clean water and raw water systems.
DY30BX 缓开快闭止回阀工作原理 ： Working principle of DY30BX slow-opening and quick-closing check valve :
Slow-opening and quick-closing check valve is installed on the system pipeline or the pump outlet. In normal operation, the medium at the inlet side moves the large valve disc up, and the medium enters the middle cavity through the flow controller to make the valve open and stop operation. The end medium enters the upper cavity through the regulating valve, so that the driving device moves down to drive the large and small valve discs downward, and the valve is closed quickly or slowly to prevent the medium from flowing backward.
DY30BX 缓开快闭止回阀结构特点 ： Third, DY30BX slow opening and quick closing check valve structure features :
Y 型结构。 Slow-opening and quick-closing check valve adopts double-chamber driving device and Y -shaped structure. The medium has the advantages of semi-linear water flow, maximum flow, small pressure loss, stable opening and closing operation, and no pressure fluctuation in the directional movement. The dual-chamber driving device can be disassembled as a whole for easy inspection. The diaphragm is made of nylon reinforced rubber, which has a long service life. The disc seal can be removed for easier maintenance.
DY30BX 缓开快闭止回阀 主要零件材料 ： Fourth, DY30BX slow opening and quick closing check valve main parts material :
Acrylic cord lining acrylic
DY30BX 缓开快闭止回阀 性能参数 ： Fifth, DY30BX slow opening and quick closing check valve performance parameters :
MPa ﹞ ﹝ MPa ﹞
MPa ﹞ Test pressure ﹝ MPa ﹞
缓开快闭止回阀 DY30BX slow-opening quick-closing check valve
℃ ≤80 ℃
DY30BX 缓开快闭止回阀外形和连接尺寸 ： Six, DY30BX slow opening quick closing check valve shape and connection size :
DN(mm) Nominal diameter DN (mm)
mm) Dimensions ( mm)
DY30BX 缓开快闭止回阀注意事项 ： Seven, DY30BX slow opening and quick closing check valve precautions :
、系统运行前应检查主阀上导阀、配管、管件是否严密完整无损 1.Check the pilot valve, piping, and fittings on the main valve before the system is running.
、导阀及配管上的控制阀动作是否正常 2. Whether the pilot valve and the control valve on the piping are operating normally
、系统运行一段时间后要进行管路维护 3. Pipeline maintenance is required after the system runs for a period of time
DY30BX 缓开快闭止回阀安装图 ： Eight, DY30BX slow opening quick closing check valve installation diagram :