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DY30BX-1.0-DN20,DY30BX-1.0-DN25,DY30BX-1.0-DN32,DY30BX-1.0-DN40,DY30BX-1.0-DN50,DY30BX-1.0-DN65,DY30BX-1.0-DN80,DY30BX-1.0-DN100,DY30BX-1.0-DN125,DY30BX-1.0-DN150,DY30BX-1.0-DN200,DY30BX-1.0-DN250,
DY30BX-1.0-DN300,DY30BX-1.0-DN350,DY30BX-1.0-DN400,DY30BX-1.0-DN450,DY30BX-1.0-DN500,DY30BX-1.0-DN600,DY30BX-1.0-DN700,DY30BX-1.0-DN800,
DY30BX-1.6-DN20,DY30BX-1.6-DN25,DY30BX-1.6-DN32,DY30BX-1.6-DN40,DY30BX-1.6-DN50,DY30BX-1.6-DN65,DY30BX-1.6-DN80,DY30BX-1.6-DN100,
DY30BX-1.6-DN125,DY30BX-1.6-DN150,DY30BX-1.6-DN200,DY30BX-1.6-DN250,DY30BX-1.6-DN300,DY30BX-1.6-DN350,DY30BX-1.6-DN400,DY30BX-1.6-DN450,
DY30BX-1.6-DN500,DY30BX-1.6-DN600,DY30BX-1.6-DN700,DY30BX-1.6-DN800,DY30BX-2.5-DN20,DY30BX-2.5-DN25,DY30BX-2.5-DN32,DY30BX-2.5-DN40,
DY30BX-2.5-DN50,DY30BX-2.5-DN65,DY30BX-2.5-DN80,DY30BX-2.5-DN100,DY30BX-2.5-DN125,DY30BX-2.5-DN150,DY30BX-2.5-DN200,DY30BX-2.5-DN250,
DY30BX-2.5-DN300,DY30BX-2.5-DN350,DY30BX-2.5-DN400,DY30BX-2.5-DN450,DY30BX-2.5-DN500,DY30BX-2.5-DN600,DY30BX-2.5-DN700,DY30BX-2.5-DN800,缓开快闭止回阀
一、概述：
明科阀门的（DY30BX）缓开快闭止回阀它包括阀体内设阀座、阀杆、以及与阀体连接的上阀盖与下阀盖等零件组成。上阀盖与下阀盖之间为隔膜腔，隔膜腔内设隔膜，隔膜与中心轴连接，中心轴另一端连接阀门，阀门与阀座接触。水容器与上阀盖进水、出水控制孔连通，水容器与上阀盖出水为节流连通，水容器与上阀盖进水为单向连通。该阀缓慢开启，防止电流冲击及官网中压力冲击；快速关闭，防止水锤产生。无水质要求，可用于污水、清水及原水系统。
产品特点
缓开快闭止回阀采用双室驱动装置，Y型结构。介质在定向运动中具有半直线水流，过流量较大，压力损失小，启闭运行平稳、不产生压力波动等优点。双室驱动装置可作为一个整体拆卸，便于检查，膜片采用尼龙强化橡胶制成，合用寿命长，阀瓣密封件可拆卸，维修更方便
缓开快闭止回阀工作原理
缓开快闭止回阀安装在系统管线上或泵出口端，正常运行中，进口端介质推动大阀盘上移，同时介质通过流量控制器进入中腔，使阀门速度打开，停止运行，出口端介质通过调节阀进入上腔，使驱动装置下移带动大、小阀盘向下运动，快速或缓慢关闭阀门，防止介质倒流。
注意事项
1、 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
2、导阀及配管上的控制阀动作是否正常
3、系统运行一段时间后要进行管路维护
调节方法
1、打开截止阀
2、启泵观察阀门进口压力是否正常
3、停泵观察水锤是否过大，水泵是否倒转
4、如水锤过大则适当关小截止阀
5、如水泵倒转则适当开大截止阀
主要技术参数
公称压(Mpa) | 壳体试验压力(MPa) | 密封试验压力(MPa) | 适用介质 | 介质温度(℃) |
1.0 | 1.5 | 1.1 | 水 | 0-80 |
1.6 | 2.4 | 1.76 | ||
2.5 | 3.75 | 2.75 |
主要零件材料
零件名称 | 零件材料 |
阀体阀盖 | WCB |
阀座阀盘 | 铜合金 |
密封圈 O型圈 | 丁腈橡胶 |
阀杆 | 2Cr13 |
弹簧 | 50CrVA |
针型阀 | 铜合金 |
球阀 | 铜合金 |
浮球阀 | 铜合金 |
微型过滤器 | 不锈钢 |
主要连接尺寸
DN | L | A | A1 | H | H1 | F | D | D1 | D2 | n-Φd | ||||||||
mm | mm | mm | mm | mm | mm | PN1.0 | PN1.6 | PN2.5 | PN1.0 | PN1.6 | PN2.5 | PN1.0 | PN1.6 | PN2.5 | PN1.0 | PN1.6 | PN2.5 | |
20 | 180 | 292 | 136 | 342 | 247 | 116 | 105 | 105 | 105 | 75 | 75 | 75 | 58 | 58 | 56 | 4-13.5 | 4-13.5 | 4-14 |
25 | 180 | 292 | 136 | 342 | 247 | 116 | 115 | 115 | 115 | 85 | 85 | 85 | 68 | 68 | 65 | 4-13.5 | 4-13.5 | 4-14 |
32 | 180 | 292 | 136 | 342 | 247 | 116 | 140 | 140 | 140 | 100 | 100 | 100 | 78 | 78 | 76 | 4-17.5 | 4-17.5 | 4-18 |
40 | 240 | 330 | 155 | 395 | 278 | 170 | 150 | 150 | 150 | 110 | 110 | 112 | 88 | 88 | 84 | 4-17.5 | 4-17.5 | 4-18 |
50 | 240 | 330 | 155 | 395 | 278 | 170 | 165 | 165 | 165 | 125 | 125 | 125 | 102 | 102 | 99 | 4-17.5 | 4-17.5 | 4-18 |
65 | 250 | 350 | 165 | 405 | 298 | 180 | 185 | 185 | 185 | 145 | 145 | 145 | 122 | 122 | 118 | 4-17.5 | 4-17.5 | 8-18 |
80 | 285 | 365 | 175 | 430 | 313 | 210 | 200 | 200 | 200 | 160 | 160 | 160 | 133 | 133 | 132 | 8-17.5 | 8-17.5 | 8-18 |
100 | 360 | 410 | 195 | 510 | 350 | 275 | 220 | 220 | 235 | 180 | 180 | 190 | 158 | 158 | 156 | 8-17.5 | 8-17.5 | 8-22 |
125 | 400 | 455 | 220 | 560 | 365 | 310 | 250 | 250 | 270 | 210 | 210 | 220 | 184 | 184 | 184 | 8-17.5 | 8-17.5 | 8-26 |
150 | 455 | 475 | 230 | 585 | 420 | 355 | 285 | 285 | 300 | 240 | 240 | 250 | 212 | 212 | 211 | 8-22 | 8-22 | 8-26 |
200 | 585 | 530 | 255 | 675 | 450 | 460 | 340 | 340 | 360 | 295 | 295 | 310 | 268 | 268 | 274 | 8-22 | 12-22 | 12-26 |
250 | 650 | 623 | 300 | 730 | 470 | 500 | 395 | 405 | 425 | 350 | 355 | 370 | 320 | 320 | 330 | 12-22 | 12-26 | 12-30 |
300 | 800 | 700 | 340 | 760 | 490 | 580 | 445 | 460 | 485 | 400 | 410 | 430 | 370 | 370 | 389 | 12-22 | 12-26 | 16-30 |
350 | 860 | 840 | 415 | 840 | 526 | 640 | 505 | 520 | 555 | 460 | 470 | 490 | 430 | 430 | 448 | 16-22 | 16-26 | 16-33 |
400 | 960 | 880 | 430 | 910 | 570 | 715 | 565 | 580 | 620 | 515 | 525 | 550 | 482 | 482 | 503 | 16-26 | 16-30 | 16-36 |
450 | 1075 | 930 | 460 | 1030 | 610 | 780 | 615 | 640 | 670 | 565 | 585 | 600 | 532 | 550 | 548 | 20-26 | 20-30 | 20-36 |
500 | 1075 | 980 | 490 | 1135 | 665 | 830 | 670 | 715 | 730 | 620 | 650 | 660 | 585 | 585 | 609 | 20-26 | 20-33 | 20-36 |
600 | 1230 | 1060 | 530 | 1270 | 725 | 920 | 780 | 840 | 845 | 725 | 770 | 770 | 685 | 685 | 720 | 20-30 | 20-36 | 20-39 |
700 | 1650 | 1130 | 560 | 1460 | 865 | 980 | 895 | 910 | 960 | 840 | 840 | 875 | 800 | 800 | 820 | 24-30 | 24-36 | 24-42 |
800 | 1750 | 1230 | 610 | 1640 | 975 | 1050 | 1015 | 1025 | 1085 | 950 | 950 | 990 | 905 | 905 | 9285 | 24-33 | 24-39 | 24-48 |
DY30BX-1.0-DN20,DY30BX-1.0-DN25,DY30BX-1.0-DN32,DY30BX-1.0-DN40,DY30BX-1.0-DN50,DY30BX-1.0-DN65,DY30BX-1.0-DN80,DY30BX-1.0-DN100,DY30BX-1.0-DN125,DY30BX-1.0-DN150,DY30BX-1.0-DN200,DY30BX-1.0-DN250, DY30BX-1.0-DN300,DY30BX-1.0-DN350,DY30BX-1.0-DN400,DY30BX-1.0-DN450,DY30BX-1.0-DN500,DY30BX-1.0-DN600,DY30BX-1.0-DN700,DY30BX-1.0-DN800, DY30BX-1.6-DN20,DY30BX-1.6-DN25,DY30BX-1.6-DN32,DY30BX-1.6-DN40,DY30BX-1.6-DN50,DY30BX-1.6-DN65,DY30BX-1.6-DN80,DY30BX-1.6-DN100, DY30BX-1.6-DN125,DY30BX-1.6-DN150,DY30BX-1.6-DN200,DY30BX-1.6-DN250,DY30BX-1.6-DN300,DY30BX-1.6-DN350,DY30BX-1.6-DN400,DY30BX-1.6-DN450, DY30BX-1.6-DN500,DY30BX-1.6-DN600,DY30BX-1.6-DN700,DY30BX-1.6-DN800,DY30BX-2.5-DN20,DY30BX-2.5-DN25,DY30BX-2.5-DN32,DY30BX-2.5-DN40, DY30BX-2.5-DN50,DY30BX-2.5-DN65,DY30BX-2.5-DN80,DY30BX-2.5-DN100,DY30BX-2.5-DN125,DY30BX-2.5-DN150,DY30BX-2.5-DN200,DY30BX-2.5-DN250, DY30BX-2.5-DN300,DY30BX-2.5-DN350,DY30BX-2.5-DN400,DY30BX-2.5-DN450,DY30BX-2.5-DN500,DY30BX-2.5-DN600,DY30BX-2.5-DN700,DY30BX-2.5-DN800,缓开快闭止回阀
