详细介绍: 概 述: 止回阀安装在管路系统,其主要作用是防止介质倒流,止回阀是一种依靠介质压力开启和关闭的自动阀门。以往国内普遍采用的是H44型法兰连接旋启式止回阀和H41型法兰连接升降式止回阀,这种传统的止回阀体积笨大,流体阻力大,阀门关闭时水锤压力高,安装、维修难,使用寿命短。
一、对夹双辩蝶式止回阀结构特点
1、结构长度短.其结构长度只有传统法兰止回阀的1/4~1/8; 2、体积小,、重量轻,其重量只有传统法兰止回的 1/4~1/20; 3、阀瓣尖闭快速.水锤压力小: 4、水平管道或垂直管道均可使月.安装方便; 5、流道通畅、流体阻力小. 6、动作i敏、密封性能好; 7、目瓣行程短、关阀冲击力小; 8、整体结构、简单紧凑、造型美观 9、使月寿命长、可靠性高。
二、旋启式止回阀对比
三、型号、材料及主要参数
配管法兰 |
公称压力 |
常规产品型号 |
JB/T74 ~90 GB/T9112 ~9124 HG20592 ~20614 |
PN1.0MPa |
H76H-10C |
H76W-10P |
H76W-10P8 |
H76W-10P3 |
H76W-10R |
H76W-10R8 |
H76W-10R3 |
PN1.6MPa |
H76H-16C |
H76W-16P |
H76W-16P8 |
H76W-16P3 |
H76W-16R |
H76W-16R8 |
H76W-16R3 |
PN2.5MPa |
H76H-25 |
H76W-25P |
H76W-25P8 |
H76W-25P3 |
H76W-25R |
H76W-25R8 |
H76W-25R3 |
PN4.0MPa |
H76H-40 |
H76W-40P |
H76W-40P8 |
H76W-40P3 |
H76W-40R |
H76W-40R8 |
H76W-40R3 |
PN6.3MPa |
H76H-63 |
H76W-63P |
H76W-63P8 |
H76W-63P3 |
H76W-63R |
H76W-63R8 |
H76W-63R3 |
PN10.0MPa |
H76H-100 |
H76W-100P |
H76W-100P8 |
H76W-100P3 |
H76W-100R |
H76W-100R8 |
H76W-100R3 |
PN16.0MPa |
H76H-160 |
H76W-160P |
H76W-160P8 |
H76W-160P3 |
H76W-160R |
H76W-160R8 |
H76W-160R3 |
PN20.0MPa |
H76H-200 |
H76W-200P |
H76W-200P8 |
H76W-200P3 |
H76W-200R |
H76W-200R8 |
H76W-200R3 |
PN25.0MPa |
H76H-250 |
H76W-250P |
H76W-250P8 |
H76W-250P3 |
H76W-250R |
H76W-250R8 |
H76W-250R3 |
GB/T9112 ~9124 HG20615 ~20635 SH3406 |
PN2.0MPa |
H76H-20C |
— |
H76W-20P8 |
H76W-20P3 |
— |
H76W-20R8 |
H76W-20R3 |
PN5.0MPa |
H76H-50 |
— |
H76W-50P8 |
H76W-50P3 |
— |
H76W-50R8 |
H76W-50R3 |
PN11.0MPa |
H76H-110 |
— |
H76W-110P8 |
H76W-110P3 |
— |
H76W-110R8 |
H76W-110R3 |
PN15.0MPa |
H76H-150 |
— |
H76W-150P8 |
H76W-150P3 |
— |
H76W-150R8 |
H76W-150R3 |
PN26.0MPa |
H76H-260 |
— |
H76W-260P8 |
H76W-260P3 |
— |
H76W-260R8 |
H76W-260R3 |
PN42.0MPa |
H76H-420 |
— |
H76W-420P8 |
H76W-420P3 |
— |
H76W-420R8 |
H76W-420R3 |
ANSI B16.5 |
Class150 |
H76H-A1C |
— |
H76W-A1P8 |
H76W-A1P3 |
— |
H76W-A1R8 |
H76W-A1R3 |
Class300 |
H76H-A3 |
— |
H76W-A3P8 |
H76W-A3P3 |
— |
H76W-A3R8 |
H76W-A3R3 |
Class600 |
H76H-A6 |
— |
H76W-A6P8 |
H76W-A6P3 |
— |
H76W-A6R8 |
H76W-A6R3 |
Class900 |
H76H-A9 |
— |
H76W-A9P8 |
H76W-A9P3 |
— |
H76W-A9R8 |
H76W-A9R3 |
Class1500 |
H76H-A15 |
— |
H76W-A15P8 |
H76W-A15P3 |
— |
H76W-A15R8 |
H76W-A15R3 |
Class2500 |
H76W-A25 |
— |
H76W-A25P8 |
H76W-A25P3 |
— |
H76W-A25R8 |
H76W-A25R3 |
|
阀体 |
WCB(A105) |
ZG1Cr18Ni9Ti |
CF8(304) |
CF3(304L) |
ZG1Cr18Ni12Mo2Ti |
0Cr17Ni1Mo2 |
00Cr17Ni14Mo2 |
阀体 |
CF8 |
CF8 |
CF8 |
CF3 |
CF8M |
CF8M |
CF3M |
阀轴 |
2Cr13 |
1Cr18Ni9Ti |
0Cr18Ni9 |
00Cr19Ni10 |
1Cr18Ni12Mo2Ti |
0Cr17Ni12Mo2 |
00Cr17Ni14Mo2 |
弹簧 |
0Cr18Ni9 |
0Cr18Ni9 |
0Cr18Ni9 |
00Cr19Ni10 |
0Cr17Ni12Mo2 |
0Cr17Ni12Mo2 |
00Cr17Ni14Mo2 |
|
适用介质 |
|
硝酸等腐蚀性介质
|
|
醋酸等腐蚀性介质
|
|
适用温度(℃) |
-29~425 |
-196~540 |
-196~425 |
-196~540
|
-196~455 |
| 四、外形尺寸 (mm)
|
|
尺寸(mm) |
重量 (kg) |
配管法兰(供参考) |
L |
D |
D3 |
D2 |
螺栓孔中心 圆直径D1 |
螺栓数量 |
螺栓直径d |
螺栓长度L1 |
PN1.0MPa |
40 |
60 |
96 |
46 |
41 |
2 |
110 |
4 |
M16 |
150 |
50 |
60 |
109 |
56 |
51 |
2 |
125 |
4 |
M16 |
150 |
65 |
67 |
129 |
73 |
65 |
3 |
145 |
4 |
M16 |
155 |
80 |
73 |
144 |
88 |
80 |
4 |
160 |
8 |
M16 |
160 |
100 |
73 |
164 |
108 |
102 |
6 |
180 |
8 |
M16 |
165 |
125 |
86 |
194 |
132 |
127 |
8 |
210 |
8 |
M16 |
180 |
150 |
98 |
220 |
160 |
152 |
13 |
240 |
8 |
M20 |
205 |
200 |
127 |
275 |
210 |
203 |
24 |
295 |
8 |
M20 |
235 |
250 |
146 |
330 |
266 |
254 |
37 |
350 |
12 |
M20 |
255 |
300 |
181 |
380 |
310 |
305 |
50 |
400 |
12 |
M20 |
290 |
350 |
184 |
440 |
355 |
350 |
76 |
460 |
16 |
M20 |
295 |
400 |
191 |
482 |
405 |
400 |
110 |
515 |
16 |
M24 |
310 |
450 |
203 |
542 |
455 |
450 |
135 |
565 |
20 |
M24 |
325 |
500 |
219 |
597 |
505 |
500 |
158 |
620 |
20 |
M24 |
345 |
600 |
222 |
698 |
605 |
600 |
320 |
725 |
20 |
M27 |
355 |
700 |
305 |
811 |
700 |
695 |
380 |
840 |
24 |
M27 |
440 |
800 |
305 |
918 |
800 |
796 |
560 |
950 |
24 |
M30 |
450 |
900 |
368 |
1018 |
903 |
898 |
640 |
1050 |
28 |
M30 |
520 |
1000 |
432 |
1124 |
1055 |
1050 |
900 |
1160 |
28 |
M33 |
590 |
1200 |
524 |
1340 |
1205 |
1200 |
1400 |
1380 |
32 |
M36 |
695 |
|
|
尺寸(mm) |
重量 (kg) |
配管法兰(供参考) |
L |
D |
D3 |
D2 |
螺栓孔中心 圆直径D1 |
螺栓数量 |
螺栓直径d |
螺栓长度L1 |
PN1.6MPa |
40 |
60 |
96 |
46 |
41 |
2 |
110 |
4 |
M16 |
150 |
50 |
60 |
109 |
56 |
51 |
2 |
125 |
4 |
M16 |
150 |
65 |
67 |
129 |
73 |
65 |
3 |
145 |
4 |
M16 |
155 |
80 |
73 |
144 |
88 |
80 |
4 |
160 |
8 |
M16 |
160 |
100 |
73 |
164 |
108 |
102 |
6 |
180 |
8 |
M16 |
165 |
125 |
86 |
194 |
132 |
127 |
8 |
210 |
8 |
M16 |
180 |
150 |
98 |
220 |
160 |
152 |
13 |
240 |
8 |
M20 |
205 |
200 |
127 |
275 |
210 |
203 |
24 |
295 |
12 |
M20 |
235 |
250 |
146 |
332 |
266 |
254 |
37 |
350 |
12 |
M24 |
255 |
300 |
181 |
387 |
310 |
305 |
50 |
400 |
12 |
M24 |
290 |
350 |
184 |
447 |
355 |
350 |
76 |
460 |
16 |
M24 |
295 |
400 |
191 |
498 |
405 |
400 |
110 |
515 |
16 |
M27 |
310 |
450 |
203 |
558 |
455 |
450 |
135 |
565 |
20 |
M27 |
330 |
500 |
219 |
618 |
505 |
500 |
158 |
620 |
20 |
M30 |
345 |
600 |
222 |
732 |
605 |
600 |
320 |
725 |
20 |
M33 |
370 |
700 |
305 |
802 |
700 |
695 |
380 |
840 |
24 |
M33 |
380 |
800 |
305 |
912 |
800 |
796 |
560 |
950 |
24 |
M36 |
470 |
900 |
368 |
1012 |
903 |
898 |
640 |
1050 |
28 |
M36 |
475 |
1000 |
432 |
1124 |
1055 |
1050 |
900 |
1170 |
28 |
M39 |
545 |
1200 |
524 |
1340 |
1205 |
1200 |
1400 |
1390 |
32 |
M45 |
620 |
PN2.5MPa |
40 |
60 |
96 |
46 |
41 |
2 |
110 |
4 |
M16 |
150 |
50 |
60 |
109 |
56 |
51 |
2 |
125 |
4 |
M16 |
150 |
65 |
67 |
129 |
73 |
65 |
3 |
145 |
4 |
M16 |
155 |
80 |
73 |
144 |
88 |
80 |
4 |
160 |
8 |
M16 |
160 |
100 |
73 |
168 |
108 |
102 |
6 |
190 |
8 |
M20 |
180 |
125 |
86 |
196 |
132 |
127 |
8 |
220 |
8 |
M24 |
205 |
150 |
98 |
224 |
160 |
152 |
14 |
250 |
8 |
M24 |
220 |
200 |
127 |
284 |
210 |
203 |
27 |
310 |
12 |
M24 |
255 |
250 |
146 |
341 |
266 |
254 |
42 |
370 |
12 |
M27 |
285 |
300 |
181 |
401 |
310 |
305 |
54 |
430 |
16 |
M27 |
325 |
350 |
184 |
458 |
355 |
350 |
86 |
490 |
16 |
M30 |
340 |
400 |
191 |
515 |
405 |
400 |
120 |
550 |
16 |
M33 |
360 |
450 |
203 |
565 |
455 |
450 |
148 |
600 |
20 |
M33 |
375 |
500 |
219 |
622 |
505 |
500 |
165 |
660 |
20 |
M33 |
395 |
600 |
222 |
732 |
605 |
600 |
340 |
770 |
20 |
M36 |
410 |
700 |
305 |
831 |
700 |
695 |
400 |
875 |
24 |
M39 |
500 |
800 |
305 |
942 |
800 |
796 |
580 |
990 |
24 |
M45 |
520 |
900 |
368 |
1040 |
903 |
898 |
660 |
1090 |
28 |
M45 |
590 |
1000 |
432 |
1155 |
1055 |
1050 |
960 |
1210 |
28 |
M52 |
675 |
1200 |
524 |
1365 |
1205 |
1200 |
1440 |
1420 |
32 |
M52 |
790 |
|
|
尺寸(mm) |
重量 (kg) |
配管法兰(供参考) |
L |
D |
D3 |
D2 |
|
螺栓数量 |
螺栓直径d |
螺栓长度L1 |
|
40 |
60 |
93 |
48 |
41 |
3 |
110 |
4 |
M16 |
150 |
50 |
60 |
109 |
58 |
51 |
3 |
125 |
4 |
M16 |
150 |
65 |
67 |
129 |
73 |
65 |
4 |
145 |
8 |
M16 |
160 |
80 |
73 |
144 |
88 |
80 |
6 |
160 |
8 |
M16 |
170 |
100 |
73 |
168 |
108 |
102 |
8 |
190 |
8 |
M20 |
180 |
125 |
86 |
196 |
132 |
127 |
13 |
220 |
8 |
M24 |
205 |
150 |
98 |
224 |
160 |
152 |
16 |
250 |
8 |
M24 |
220 |
200 |
127 |
291 |
210 |
203 |
28 |
320 |
12 |
M27 |
270 |
250 |
146 |
353 |
266 |
254 |
49 |
385 |
12 |
M30 |
300 |
300 |
181 |
418 |
310 |
305 |
76 |
450 |
16 |
M30 |
345 |
350 |
222 |
475 |
355 |
350 |
114 |
510 |
16 |
M33 |
400 |
400 |
232 |
547 |
405 |
400 |
190 |
585 |
16 |
M36 |
425 |
450 |
264 |
572 |
455 |
450 |
200 |
610 |
20 |
M36 |
470 |
500 |
292 |
626 |
505 |
500 |
260 |
670 |
20 |
M39 |
505 |
600 |
318 |
745 |
608 |
600 |
404 |
795 |
20 |
M45 |
575 |
|
40 |
60 |
104 |
48 |
41 |
4 |
125 |
4 |
M20 |
170 |
50 |
60 |
114 |
58 |
51 |
4 |
135 |
4 |
M20 |
170 |
65 |
67 |
138 |
73 |
65 |
5 |
160 |
8 |
M20 |
180 |
80 |
73 |
148 |
88 |
80 |
7 |
170 |
8 |
M20 |
190 |
100 |
179 |
174 |
108 |
102 |
10 |
200 |
8 |
M24 |
210 |
125 |
125 |
211 |
132 |
127 |
16 |
240 |
8 |
M27 |
250 |
150 |
136 |
248 |
162 |
152 |
20 |
280 |
8 |
M30 |
290 |
200 |
165 |
310 |
212 |
200 |
38 |
345 |
12 |
M33 |
335 |
250 |
213 |
362 |
266 |
250 |
62 |
400 |
12 |
M33 |
395 |
300 |
229 |
422 |
310 |
305 |
100 |
460 |
16 |
M33 |
420 |
350 |
273 |
487 |
355 |
350 |
160 |
525 |
16 |
M36 |
480 |
400 |
305 |
541 |
405 |
400 |
260 |
585 |
16 |
M39 |
525 |
|
40 |
60 |
104 |
48 |
41 |
4 |
125 |
4 |
M20 |
190 |
50 |
60 |
120 |
58 |
51 |
5 |
145 |
4 |
M24 |
185 |
65 |
67 |
144 |
73 |
65 |
7 |
170 |
8 |
M24 |
195 |
80 |
73 |
154 |
88 |
80 |
10 |
180 |
8 |
M24 |
205 |
100 |
79 |
181 |
108 |
102 |
12 |
210 |
8 |
M27 |
225 |
125 |
105 |
218 |
132 |
127 |
19 |
250 |
8 |
M30 |
265 |
150 |
136 |
258 |
162 |
152 |
25 |
290 |
12 |
M30 |
305 |
200 |
165 |
324 |
212 |
200 |
56 |
360 |
12 |
M33 |
355 |
250 |
213 |
392 |
266 |
250 |
94 |
430 |
12 |
M36 |
425 |
300 |
229 |
456 |
312 |
305 |
142 |
500 |
16 |
M39 |
465 |
350 |
273 |
510 |
355 |
350 |
230 |
560 |
16 |
M45 |
535 |
400 |
305 |
570 |
405 |
400 |
366 |
620 |
16 |
M45 |
585 | |