一、丹富斯全铜压差控制阀性能与特点：全铜压差控制阀

该阀为双瓣结构，阀杆不平衡力小，结构紧凑，用于供热（空调）水系统中，恒定被控系统的压差，并有以下特点：

 1、恒定被控系统压差；

2、支持被控系统内部自主调节；

3、吸收外网压差波动；

4、采用先进的无级调节压结构，控制压差可调比可达25：1；

5、具备自动消除堵塞功能；

6、结构长度符合GB/T12221中截止阀尺寸；

7、法兰尺寸符合GB4216.2中灰铸铁法兰尺寸。

二、全铜压差控制阀主要技术参数全铜压差控制阀

 1、公称压力：1.6MPa；

 2、介质温度：0~120℃；

 3、工作压差范围：0.02~0.3 MPa；

 4、控制压差设定值：0.02 MPa（2mH2O）,控制压差可调范围2~6 mH2O；

 5、导压管长度：1m ；

 6、导压管连接端尺寸：1/2//管螺纹。

三、压差控制阀安装调试

 1、介质流动方向应与阀体箭头方向一致；

2、该型阀应安装在供水管上，阀上接导压管，导压管的另一端与供水管连接，建议在导压管供水端安装1/2//球阀，以便启动消除堵塞功能；全铜压差控制阀

3、在导压管前的供水管上应安装过滤阀，避免水质太差造成该阀失去自动调节功能；

4、供水管和该阀前的回水管应分别装设压力表，便于调节控制压差；

5、如发现该系统流量过大或过小，可能的原因是管道元件安装时的杂物卡阻在阀塞上，可将1/2//球阀关闭3~5分钟，这时如果是较轻堵塞，即可自动消除，如还不能消除，则要拆开阀门检查并消除堵塞物；

6、控制压差调节方法：逆时针方向调节调压阀杆，观察压差阀后压力表降低0.01 MPa时，控制压差即由设定的0.02 MPa增大到0.03 MPa，以此类推；

7、该阀的工作压差为0.02~0.3 MPa，如安装后发现其工作压差大于0.3 MPa时应在供水管上安装手动调节阀，降低热力入口装置处的供、回水管压差，否则，压差阀可能只在小开度下长期工作，会产生噪音，还会大大降低该阀的使用寿命。

Dan fuss all copper differential pressure control valve performance and features:

For double disc structure, this valve stem unbalanced force is small, compact structure, used for water heating (air conditioning) system, the constant differential pressure controlled system, and has the following features:

1, the constant pressure difference control system;

2, support controlled system internal autonomic regulation;

3 differential pressure fluctuation, absorb the network;

4, the use of advanced stepless adjusting structure, general control pressure adjustable ratio of 25:1;

5, have automatic eliminate congestion function;

6, the length of structure in line with the GB/T12221 cut-off valve size;

7, flange size with GB4216.2 gray cast iron flanges in size.

Second, the whole copper differential pressure control valve main technical parameters

1, nominal pressure: 1.6 MPa;

2, medium temperature: 0 ~ 120 ℃;

3, work pressure differential range: 0.02 ~ 0.3 MPa.

4, control differential pressure value: 0.02 MPa (2 mH2O), general control pressure adjustment range is 2 ~ 6 mH2O;

5, guide pressure pipe length: 1 m;

6, guide pressure pipe end connection size: 1/2 / / pipe thread.

Third, differential pressure control valve installation and debugging

1, the medium flow direction should be consistent with body direction arrow;

Type 2, the valve should be installed on the water supply pipe, valve guide pressure tube, on the other end of the guide pipe connected to the water supply pipe, it is recommended to guide pipe water supply side install 1/2 / / ball valve, in order to start the eliminate congestion function;

3, in front of the pilot pressure pipe filtering valve should be installed on water supply pipe, avoid the valve loses its ability to automatically adjust the poor water quality;

4, water supply and return pipe before the valve should be installed pressure gauge, facilitate adjustment control pressure difference;

5, if discover the system flow is too big or too small, the possible reasons is piping components installed with sundry jam in the valve plug, 1/2 / / ball valve can be closed 3 ~ 5 minutes, then if it is a lighter plug, can be automatically eliminated, if not eliminate, to open the valve check and eliminate the clog;

6, controlling differential pressure regulating methods: regulate the regulating stem counterclockwise, observe the pressure differential valve after pressure to reduce 0.01 MPa, the control pressure difference is set by the increased 0.02 MPa to 0.02 MPa, and so on.

7, working pressure difference of the valve is 0.02 ~ 0.3 MPa, such as the installation and found its working pressure difference is greater than 0.3 MPa, shall install manual control valve in the water supply pipe, and reduce the thermal entrance device of supply and return pipe pressure difference, otherwise, the differential pressure valve may work for a long time, only in a small open degrees will produce noise, will greatly reduce the service life of the valve.