微阻缓闭蝶式止回阀
Slightly slow closing butterfly check valve
用途
本阀门安装在工业、农业、城市、楼宇等行业的给排水系统的泵出口，用以防止介质倒流、消除水锤、保护泵及管路的安全运行。
use
The valve is installed in the pump outlet of the water supply and drainage system of industry, agriculture, city, building and other industries to prevent the backflow of the medium, eliminate the water hammer, and protect the safe operation of the pump and pipeline.
执行标准
法兰标准：GB/T17241(铸铁)、GB/T9113(铸钢)
试验与检验：GB/T13927
Executive standard
Flange standard: GB/T17241(cast iron), GB/T9113(cast steel)
Test and inspection: GB/T13927
主要零件材料
阀体/阀盖：灰铸铁、球墨铸铁、铸钢
阀瓣：钢骨架衬胶
阀杆：不锈钢
调节阀/活塞：黄铜、不锈钢
Main parts material
Body/bonnet: gray cast iron, ductile cast iron, cast steel
Disc: steel skeleton lined with rubber
Valve stem: stainless steel
Regulating valve/piston: brass, stainless steel
性能规范
公称压力：1.6Mpa
强度试验：2.4Mpa
密封试验：1.76Mpa
适用温度：≤80℃
适用介质：水
慢关段可调时间：0~60S
Performance specification
Nominal pressure: 1.6Mpa
Strength test: 2.4Mpa
Seal test: 1.76Mpa
Applicable temperature: ≤80℃
Suitable medium: water
Adjustable time for slow off: 0 to 60S
特点
1、设有平衡锤装置，阀瓣旋启时对水流的阻力小，开阀力仅为原旋启式的五分之一。
2、阀瓣关闭的后段行程设有阻尼装置，且阻尼时间可调，可防止破坏性水锤的产生。
3、阀瓣密封效果好、减振耐磨、使用寿命长。
4、运行平稳、噪音低。
Features
1, with a balancing hammer device, the valve disc is turned on the water resistance is small, opening the valve force is only one-fifth of the original swing type.
2, the back stroke of the valve flap is equipped with a damping device, and the damping time is adjustable, which can prevent the generation of destructive water hammer.
3. Good sealing effect, vibration reduction and wear resistance, long service life.
4, smooth operation, low noise.
主要外形尺寸
Main overall dimensions
