一、丹富斯全銅壓差控制閥性能與特點：全銅壓差控制閥

該閥為雙瓣結構，閥桿不平衡力小，結構緊湊，用于供熱（空調）水系統中，恒定被控系統的壓差，并有以下特點：

 1、恒定被控系統壓差；

2、支持被控系統內部自主調節；

3、吸收外網壓差波動；

4、采用*的無級調節壓結構，控制壓差可調比可達25：1；

5、具備自動消除堵塞功能；

6、結構長度符合GB/T12221中截止閥尺寸；

7、法蘭尺寸符合GB4216.2中灰鑄鐵法蘭尺寸。

二、主要技術參數

 1、公稱壓力：1.6MPa；

 2、介質溫度：0~120℃；

 3、工作壓差范圍：0.02~0.3 MPa；

 4、控制壓差設定值：0.02 MPa（2mH2O）,控制壓差可調范圍2~6 mH2O；

 5、導壓管長度：1m ；

 6、導壓管連接端尺寸：1/2//管螺紋。

三、壓差控制閥安裝調試

 1、介質流動方向應與閥體箭頭方向*；

2、該型閥應安裝在供水管上，閥上接導壓管，導壓管的另一端與供水管連接，建議在導壓管供水端安裝1/2//球閥，以便啟動消除堵塞功能；

3、在導壓管前的供水管上應安裝過濾閥，避免水質太差造成該閥失去自動調節功能；

4、供水管和該閥前的回水管應分別裝設壓力表，便于調節控制壓差；

5、如發現該系統流量過大或過小，可能的原因是管道元件安裝時的雜物卡阻在閥塞上，可將1/2//球閥關閉3~5分鐘，這時如果是較輕堵塞，即可自動消除，如還不能消除，則要拆開閥門檢查并消除堵塞物；

6、控制壓差調節方法：逆時針方向調節調壓閥桿，觀察壓差閥后壓力表降低0.01 MPa時，控制壓差即由設定的0.02 MPa增大到0.03 MPa，以此類推；

7、該閥的工作壓差為0.02~0.3 MPa，如安裝后發現其工作壓差大于0.3 MPa時應在供水管上安裝手動調節閥，降低熱力入口裝置處的供、回水管壓差，否則，壓差閥可能只在小開度下*工作，會產生噪音，還會大大降低該閥的使用壽命。

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.