Wafer type butterfly check valve
Technical Parameters
Product model: H76H/W
Nominal diameter: DN50~1200mm
Nominal pressure: PN1.0~4.0MPa
Operating temperature: -29°C~200°C
Applicable medium: water, steam, oil, nitric acid, acetic acid
Product Description
Stainless steel butterfly check valve is composed of valve body, valve disc, valve stem and spring and other parts, and is connected by wafer. Due to the short closing stroke and spring loading of this disc, water hammer is significantly reduced. Mainly used in urban, industrial and high-rise building water supply, drainage network. Its structural length is shorter than that of general check valves, and it is suitable for occasions with limited installation space. The opening and closing parts are opened or closed by the medium flow and force to prevent the backflow of the medium.
Main performance specifications
| DN | DN(mm) | DN50~DN1200 | |||
| PN | PN(MPa) | 1.0MPa | 1.6MPa | 2.5MPa | 4.0MPa |
| Test pressure | Strength test | 1.5MPa | 2.4MPa | 3.75MPa | 6.0MPa |
| Seal test | 1.1MPa | 1.76MPa | 2.75MPa | 4.4MPa | |
| Applicable media | Water, steam, oil, sewage, acid and alkali | ||||
| Proper temperature |
Rubber sealing surface (X) -20℃~120℃ Alloy steel sealing surface (H) body carbon steel -29℃~425℃ Stainless steel body for acid medium -29℃~200℃ |
||||
Material of main parts
| Body | Cast iron, cast steel, stainless steel, chromium nickel molybdenum titanium steel |
| Plate | Cast iron, cast steel, stainless steel, chromium nickel molybdenum titanium steel |
| Stem | Carbon steel, 2Cr13, stainless steel, chromium nickel molybdenum titanium steel |
| Sealing ring | Rubber, stainless steel, alloy steel |
| Spring | 60Si2Mn、3Cr13、17-7PH、INCONEL |
Main external connection dimensions
|
Nominal pressurePN (MPa) |
Nominal Diameter DN(mm) |
Size(mm) |
WT (kg) |
Piping flange (for reference) |
||||||
|
L |
D |
D3 |
D2 |
D1 |
n |
Number of bolts d |
Bolt length D |
|||
|
1.0 |
40 |
43 |
92 |
55 |
41 |
1.8 |
110 |
4 |
M16 |
105 |
|
50 |
43 |
107 |
65.5 |
51 |
2 |
125 |
4 |
M16 |
150 |
|
|
65 |
46 |
127 |
81 |
65 |
3 |
145 |
4 |
M16 |
155 |
|
|
80 |
64 |
143 |
95 |
80 |
4 |
160 |
8 |
M16 |
160 |
|
|
100 |
64 |
162 |
117.5 |
102 |
6 |
180 |
8 |
M16 |
165 |
|
|
125 |
70 |
192 |
145.5 |
127 |
8 |
210 |
8 |
M16 |
180 |
|
|
150 |
76 |
218 |
170.5 |
152 |
13 |
240 |
8 |
M20 |
205 |
|
|
200 |
89 |
273 |
227.5 |
203 |
24 |
295 |
8 |
M20 |
235 |
|
|
250 |
114 |
328 |
266 |
254 |
35 |
350 |
12 |
M20 |
255 |
|
|
300 |
114 |
380 |
312 |
305 |
48 |
400 |
12 |
M20 |
290 |
|
|
350 |
127 |
438 |
361 |
350 |
78 |
460 |
16 |
M20 |
295 |
|
|
400 |
140 |
489 |
406 |
400 |
106 |
515 |
16 |
M24 |
310 |
|
|
450 |
152 |
539 |
450 |
450 |
135 |
565 |
20 |
M24 |
325 |
|
|
500 |
152 |
594 |
505 |
500 |
165 |
620 |
20 |
M24 |
345 |
|
|
600 |
178 |
695 |
624 |
600 |
260 |
725 |
20 |
M27 |
355 |
|
|
1.6 |
40 |
43 |
92 |
55 |
41 |
1.8 |
110 |
4 |
M16 |
105 |
|
50 |
43 |
107 |
65.5 |
51 |
2 |
125 |
4 |
M16 |
150 |
|
|
65 |
46 |
127 |
81 |
65 |
3 |
145 |
4 |
M16 |
155 |
|
|
80 |
64 |
142 |
95 |
80 |
4 |
160 |
8 |
M16 |
160 |
|
|
100 |
64 |
162 |
117.5 |
102 |
6 |
180 |
8 |
M16 |
165 |
|
|
125 |
70 |
192 |
145.5 |
127 |
8 |
210 |
8 |
M16 |
180 |
|
|
150 |
76 |
218 |
170.5 |
152 |
13 |
240 |
8 |
M20 |
205 |
|
|
200 |
89 |
273 |
227.5 |
203 |
24 |
295 |
12 |
M20 |
235 |
|
|
250 |
114 |
330 |
266 |
254 |
37 |
355 |
12 |
M24 |
265 |
|
|
300 |
114 |
385 |
312 |
305 |
50 |
410 |
12 |
M24 |
305 |
|
|
350 |
127 |
445 |
361 |
350 |
80 |
470 |
16 |
M24 |
310 |
|
|
400 |
140 |
495 |
406 |
400 |
110 |
525 |
16 |
M27 |
330 |
|
|
450 |
152 |
555 |
450 |
450 |
145 |
585 |
20 |
M27 |
345 |
|
|
600 |
152 |
615 |
505 |
500 |
180 |
650 |
20 |
M30 |
370 |
|
|
600 |
178 |
730 |
624 |
600 |
280 |
770 |
20 |
M33 |
380 |
|
