Brief introduction ：
Widely used for water supply pipe network of high-rise buildings, a certain medium of a corrosive and restricted installation space as well as sewer network.
Features:
⊙ The valve seat is designed to multi term narrow bands and vulcanized on valve body by complete seal with no leak.
⊙ Structure of butterfly dual plate check valve is safe and reliable with high external force and low trash rack loss.
⊙ Such kind of valve structure installed conveniently with short length and good rigidity.
Mail part & material
Body : pray cast iron, carbon steel
Disc: stainless steel
Spring : Stainless steel
Seat : Stainless steel, NBR
Stem : Stainless steel
Technical Specification
- Nominal diameter ： 50 ～ 60 0 mm
- Nominal pressure ： 1.0~2.5 Mpa
-Medium: freshwater, sewage, seawater, salt, alkali, acid, leechdom, steam, oil, food, etc.
-Work temperature: 0~80 ℃
Main external and connection dimension
 
DN |
50 |
65 |
80 |
100 |
125 |
150 |
200 |
250 |
300 |
350 |
400 |
450 |
500 |
600 |
Hard seal |
60 |
67 |
73 |
73 |
83 |
98 |
127 |
146 |
181 |
184 |
198 |
203 |
219 |
222 |
rubber seal |
43 |
46 |
64 |
64 |
70 |
76 |
89 |
114 |
114 |
127 |
140 |
152 |
152 |
178 |
D1 |
65 |
78 |
91 |
117 |
114 |
171 |
222 |
276 |
327 |
377 |
426 |
475 |
520 |
620 |
D2 |
48 |
57 |
70 |
91 |
113 |
135 |
176 |
222 |
270 |
320 |
365 |
420 |
475 |
570 |
1.0Mpa |
105 |
124 |
137 |
162.5 |
192.5 |
218 |
273 |
328 |
378 |
438 |
482 |
532 |
590 |
690 |
1.6/2.5MPa |
105 |
124 |
137 |
162.5 |
192.5 |
218 |
273 |
329 |
384 |
444 |
482 |
550 |
590 |
690 |
|
