一、 ABOUT THE PRODUCT
This valve is a new-style control valve self developed by this Co,by mean of introducting forengn advanced konw-how and upon the condition that the water supply pipe network at present is seriously polluted due to back flow and is safe,reliable and able to prevent the back flow pollution of drinking water so as to make sure of both safety and sanitation of lliving and drinking water.
二、 PURPOSE AND FEATURES
Mainly used for the drinking water supply system of high buildings,fire-fighting water system,air-conditioning and refrigerating,the water suooly pipeline in water works etc,to prevent the water inside of the pipline from back flow to it,causing back-flow pollution.
三、 MAIN PERFORMANCE PARAMETERS
| PN Mpa |
Seal test(water)Mpa
|
Strengly test(water)Mpa |
medium used
|
temperature |
| 1.0 |
1.1 |
1.5 |
潔凈水 |
<=80 |
| 1.6 |
1.76 |
2.4 |
| 2.5 |
2.75 |
3.75 |
四、SCHEMATIC DIAGRAM OF INSTALLATION
| DN（mm） |
D |
L |
A |
B |
C |
H |
| 50 |
57 |
370 |
14.5 |
9.5 |
2.2 |
128 |
| 60 |
| 65 |
76 |
400 |
14.5 |
9.5 |
2.2 |
145 |
| 80 |
89 |
450 |
14.5 |
9.5 |
2.2 |
167 |
| 100 |
108 |
610 |
16 |
9.5 |
2.2 |
207 |
| 114 |
| 150 |
159 |
700 |
16 |
9.5 |
2.2 |
273 |
| 165 |
| 168 |
| 200 |
219 |
890 |
19 |
13 |
2.5 |
337 |
| 250 |
273 |
1080 |
19 |
13 |
2.5 |
400 |
| 300 |
325 |
1200 |
19 |
13 |
3.3 |
452 |
| 350 |
377 |
1300 |
25 |
13 |
3.3 |
530 |
| 400 |
426 |
1400 |
25 |
13 |
5.5 |
620 |
| 450 |
480 |
1500 |
25 |
13 |
5.5 |
720 |
| 500 |
530 |
1600 |
25 |
13 |
5.5 |
840 |
| 600 |
630 |
1800 |
25 |
13 |
5.5 |
960 |
|
