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ZLF, ZYF Flow Control Valves
Product Name:
ZLF, ZYF Flow Control Valves
Description:

该产品已对恒定流量进行精度测试,恒定流量精度±3%。内部材质均为青铜和不锈钢,已无需电源,节煤、节电各8~30%。设定流量可在360°范围内调节,手动调节阀组特有锁定装置及流量显示,保证了运行时调节质量。

构简图
 安装示意图
安装示意图
产品特点及用途:上海唐京阀门有限公司
   ZLF-16型自力式平街阀,是一种利用介质自身的压力变化进行自我控制而保持流经该被控系统流量不变的阀门,并具有流量指示,调节方便,适用于供热空调等非腐蚀性介质的流量控制。运行前一次性调节,即可使系统流量自动恒定在要求的设定值。
ZLF型自力式流量平衡阀
ZYF自力式压差控制阀
三、性能零件参数表 :021-51697495
型号 ZLF
公称压力 1.0
1.6(MPa)
工作温度 ≤120℃
压差范围 20-600(KPa) 适用介质 水、蒸汽
零件名称 阀体、上盖、下盖 手、自动调节组 弹簧 感压膜
材质 优碳钢、铸铁 青铜、不锈钢 不锈钢 乙丙烯埋纤

四、主要外形安装尺寸
公称通径 安装方式 阀长L 法兰直径D 螺栓孔中心距D1 螺栓孔数×直径Z-Φd H1 H2 恒定流量范围m3/h
DN15 管螺纹 110 1/2"   58 95 0.2-1
DN20 115 3/4"     60 110 0.4-2
DN25 130 1"     62 115 0.5-3
DN32 法兰连接 180 135 100 4×18 65 190 1-4
DN40 200 145 110 4×18 78 210 3-7
DN50 230 160 125 4×18 100 240 3-10
DN65 290 180 145 4×18 120 255 4-11
DN80 310 195 160 8×18 150 260 5-18
DN100 350 215 180 8×18 175 310 10-30
DN125 400 245 210 8×18 180 340 15-55
DN150 480 280 240 8×23 230 400 30-100
DN200 533 335 295 12(8)×23 280 445 40-200
DN250 622 405 335(350) 12×25(23) 360 550 100-300
DN300 698 460 410(400) 12×25(23) 430 630 150-500
DN350 787 520 470(460) 16×25(23) 460 650 200-700
五、工作原理
  自力式控制阀由自动平衡阀组和手动调节阀组两部分组成。系统流体的工作压力为P1,手动调节阀组前后压力分别为P2、P3。当手动调节阀组调到某一位置时,即人为确定了“设定流量”,以及相对应的固定P2-P3值,当系统流量增大时P2-P3的实际值超过了允许的给定值,此时自动平衡阀组就会缩小,直到流量重新维持到设定流量。
六、注意事项
1、阀体上箭头为流通方向,切勿装反。
2、可垂直安装亦可水平安装。
3、该阀可安装在供水、回水管上,当系统流体工作压力超过散热器允许工作压力时,建议安装在供水管网上,此阀不具备关断功能。
4、如因堵塞出现流量减少,应将设定值调到最大,待故障排除后,重新调到原设定值。
5、流量设定方法,用扳手旋转阀杆,设定应用的流量数字,再用钥匙销定旋转阀瓣即可。
6、藏放、应善保管、避免雨淋、存放干燥处。

Keyword:Valve | inlet valve | Shanghai valve | Power Station Valve | Industrial Valve | Universal Valve | Chemical valve | High valve | high temperature valve | Shenzhen valve | Electric valve | China Valves
 
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