DDRX-对夹式止回阀
适用温度:-29°C ~ 540°C
阀体:WCB 不锈钢
阀盖:WCB 不锈钢
密封圈:不锈钢 PTFE
DDRX-对夹式止回阀
DDRX对夹双瓣旋启式止回阀由阀体、阀瓣、阀杆及弹簧等零件组成,采用对夹连接。由于阀瓣的关闭行程短,并且有弹簧加载,可显著减少水锤现象。该阀主要适用于城市、工业及高层建筑给水、排水管网上。由于其结构长度比一般止回阀短,对有安装空间限制的场所为适用。
产品特点
1、体积小,重量轻,结构紧凑、维修方便
2、阀板采用对偶式,在弹簧的弹性力下矩下可自行速闭
3、因速闭作用,可防止介质倒流
4、阀体结构长度尺寸小,刚性好
5、安全方便,可用于水平垂直两个方向安装
主要零件材料 |
阀体 |
WCB(A105) |
ZG1Cr18Ni9Ti |
CF8(304) |
CF3(304L) |
ZG1Cr18Ni12Mo2Ti |
CF8M(316) |
CF3M(316L) |
阀瓣 |
2Cr13 |
1Cr18Ni9Ti |
0Cr18Ni9 |
00Cr19Ni10 |
1Cr18Ni12TMo2i |
00Cr17Ni12Mo2 |
00Cr17Ni14Mo2 |
|
压圈 |
2Cr13 |
1Cr18Ni9Ti |
0Cr18Ni9 |
00Cr19Ni10 |
1Cr18Ni12TMo2i |
00Cr17Ni12Mo2 |
00Cr17Ni14Mo2 |
|
弹簧 |
0Cr18Ni9 |
0Cr18Ni9 |
0Cr18Ni9 |
00Cr19Ni10 |
1Cr18Ni12TMo2i |
00Cr17Ni12Mo2 |
00Cr17Ni14Mo2 |
|
适用工况 |
适用介质 |
水、蒸汽、 油品等 |
硝酸等腐蚀性介质 |
强氧化性 介质 |
醋酸等腐蚀性介质 |
尿素等腐 蚀性介质 |
||
适用温度(℃) |
-29~425 |
-196~540 |
-196~425 |
-196~540 |
-196~455 |
|||
注:本表为常规对夹式止回阀的型号编制,主要零件材料及适用工况,其他要求及其型号编制参见对夹式止回阀型号编制方法 |
主要尺寸及重量
公称压力 |
公称通径 |
尺寸(mm) |
重量 |
配管法兰(供参考) |
||||||||
L |
D |
D2 |
D3 |
D4 |
D5 |
螺栓孔中心 |
螺栓 |
螺栓 |
螺栓 |
|||
PN1.0MPa |
15 |
16 |
52 |
15 |
24 |
31 |
40 |
0.12 |
65 |
4 |
M12 |
75 |
20 |
19 |
62 |
19 |
30 |
40 |
50 |
0.24 |
75 |
4 |
M12 |
90 |
|
25 |
22 |
70 |
24 |
36 |
47 |
58 |
0.34 |
85 |
4 |
M12 |
90 |
|
32 |
28 |
83 |
31 |
46 |
56 |
68 |
0.53 |
100 |
4 |
M16 |
100 |
|
40 |
31.5 |
93 |
39 |
55 |
66 |
78 |
0.80 |
110 |
4 |
M16 |
105 |
|
50 |
40 |
108 |
48 |
65 |
78 |
90 |
1.2 |
125 |
4 |
M16 |
125 |
|
65 |
46 |
128 |
62 |
80 |
95 |
110 |
1.8 |
145 |
4 |
M16 |
130 |
|
80 |
50 |
142 |
76 |
96 |
110 |
125 |
2.2 |
160 |
8 |
M16 |
135 |
|
100 |
65 |
162 |
95 |
115 |
135 |
150 |
3.4 |
180 |
8 |
M16 |
150 |
|
125 |
90 |
192 |
110 |
125 |
132 |
- |
9.0 |
210 |
8 |
M16 |
180 |
|
150 |
106 |
218 |
127 |
150 |
158 |
- |
14 |
240 |
8 |
M20 |
210 |
|
PN1.0MPa |
200 |
140 |
273 |
165 |
200 |
208 |
- |
24 |
295 |
8 |
M20 |
240 |
PN1.6MPa |
200 |
140 |
273 |
165 |
200 |
208 |
- |
24 |
295 |
12 |
M20 |
240 |
PN2.5MPa |
15 |
16 |
52 |
15 |
24 |
31 |
40 |
0.12 |
65 |
4 |
M12 |
80 |
20 |
19 |
62 |
19 |
30 |
40 |
50 |
0.24 |
75 |
4 |
M12 |
90 |
|
25 |
22 |
72 |
24 |
36 |
47 |
58 |
0.34 |
85 |
4 |
M12 |
90 |
|
32 |
28 |
83 |
31 |
46 |
56 |
68 |
0.53 |
100 |
4 |
M16 |
110 |
|
40 |
31.5 |
93 |
39 |
55 |
66 |
78 |
0.80 |
110 |
4 |
M16 |
115 |
|
50 |
40 |
108 |
48 |
65 |
78 |
90 |
1.2 |
125 |
4 |
M16 |
125 |
|
65 |
46 |
128 |
62 |
80 |
95 |
110 |
1.8 |
145 |
8 |
M16 |
135 |
|
80 |
50 |
142 |
76 |
96 |
110 |
128 |
2.2 |
160 |
8 |
M16 |
145 |
|
100 |
60 |
168 |
95 |
115 |
135 |
150 |
3.8 |
190 |
8 |
M20 |
160 |
|
125 |
90 |
194 |
110 |
125 |
132 |
- |
9.2 |
220 |
8 |
M24 |
205 |
|
150 |
106 |
224 |
127 |
150 |
158 |
- |
15 |
250 |
8 |
M24 |
225 |
|
200 |
140 |
284 |
165 |
200 |
208 |
- |
26 |
310 |
12 |
M24 |
260 |
|
PN4.0MPa |
15 |
16 |
52 |
15 |
24 |
31 |
40 |
0.12 |
65 |
4 |
M12 |
80 |
20 |
19 |
62 |
19 |
30 |
40 |
50 |
0.24 |
75 |
4 |
M12 |
90 |
|
25 |
22 |
72 |
24 |
36 |
47 |
58 |
0.34 |
85 |
4 |
M12 |
90 |
|
32 |
28 |
83 |
31 |
46 |
56 |
68 |
0.53 |
100 |
4 |
M16 |
110 |
|
40 |
31.5 |
93 |
39 |
55 |
66 |
78 |
0.80 |
110 |
4 |
M16 |
115 |
|
50 |
40 |
108 |
48 |
65 |
78 |
90 |
1.2 |
125 |
4 |
M16 |
125 |
|
65 |
46 |
128 |
62 |
80 |
95 |
110 |
1.8 |
145 |
8 |
M16 |
135 |
|
80 |
50 |
142 |
76 |
96 |
110 |
128 |
2.2 |
160 |
8 |
M16 |
145 |
|
100 |
60 |
168 |
95 |
115 |
135 |
150 |
3.8 |
190 |
8 |
M20 |
160 |
|
125 |
90 |
194 |
110 |
125 |
132 |
- |
9.2 |
220 |
8 |
M24 |
205 |
|
150 |
106 |
224 |
127 |
150 |
158 |
- |
15 |
250 |
8 |
M24 |
225 |
|
200 |
140 |
291 |
165 |
200 |
208 |
- |
28 |
320 |
12 |
M27 |
275 |
主要尺寸及重量
公称压力 |
公称通径 |
尺寸(mm) |
重量 |
配管法兰(供参考) |
|||||||
L |
D |
D2 |
D3 |
D4 |
螺栓孔中心 |
螺栓 |
螺栓 |
螺栓 |
|||
PN6.3MPa |
15 |
25 |
62 |
15 |
25 |
25 |
0.5 |
75 |
4 |
M12 |
100 |
20 |
31.5 |
73 |
19 |
30 |
30 |
0.7 |
90 |
4 |
M16 |
115 |
|
25 |
35.5 |
83 |
24 |
36 |
36 |
1.0 |
100 |
4 |
M16 |
130 |
|
32 |
40 |
89 |
31 |
43 |
43 |
1.3 |
110 |
4 |
M20 |
140 |
|
40 |
45 |
104 |
39 |
52 |
52 |
2.0 |
125 |
4 |
M20 |
150 |
|
50 |
56 |
114 |
48 |
62 |
62 |
3.2 |
135 |
4 |
M20 |
160 |
|
65 |
63 |
138 |
62 |
75 |
75 |
4.5 |
160 |
8 |
M20 |
170 |
|
80 |
71 |
148 |
76 |
90 |
90 |
5 |
170 |
8 |
M20 |
180 |
|
100 |
80 |
174 |
95 |
112 |
112 |
7 |
200 |
8 |
M24 |
200 |
|
125 |
110 |
211 |
110 |
125 |
132 |
13 |
240 |
8 |
M27 |
245 |
|
150 |
125 |
248 |
127 |
150 |
158 |
22 |
280 |
8 |
M30 |
270 |
|
200 |
160 |
310 |
165 |
200 |
208 |
40 |
345 |
12 |
M33 |
325 |
|
PN10.0MPa |
15 |
25 |
62 |
15 |
25 |
25 |
0.6 |
75 |
4 |
M12 |
100 |
20 |
31.5 |
73 |
19 |
30 |
30 |
1.0 |
90 |
4 |
M16 |
115 |
|
25 |
35.5 |
83 |
24 |
36 |
36 |
1.3 |
100 |
4 |
M16 |
130 |
|
32 |
40 |
89 |
31 |
43 |
43 |
1.6 |
110 |
4 |
M20 |
140 |
|
40 |
45 |
104 |
39 |
52 |
52 |
2.5 |
125 |
4 |
M20 |
150 |
|
50 |
56 |
120 |
48 |
62 |
62 |
3.8 |
145 |
4 |
M24 |
175 |
|
65 |
63 |
144 |
62 |
75 |
75 |
6 |
170 |
8 |
M24 |
185 |
|
80 |
71 |
154 |
76 |
90 |
90 |
7 |
180 |
8 |
M24 |
195 |
|
100 |
80 |
181 |
95 |
112 |
112 |
10 |
210 |
8 |
M27 |
220 |
|
125 |
110 |
218 |
110 |
132 |
132 |
18 |
250 |
8 |
M30 |
265 |
|
150 |
125 |
258 |
127 |
158 |
158 |
30 |
290 |
12 |
M30 |
285 |
|
200 |
160 |
324 |
165 |
208 |
208 |
56 |
360 |
12 |
M33 |
345 |
|
PN16.0MPa |
15 |
25 |
58 |
15 |
25 |
25 |
0.6 |
75 |
4 |
M16 |
70 |
20 |
31.5 |
69 |
19 |
30 |
30 |
0.9 |
90 |
4 |
M20 |
85 |
|
25 |
35.5 |
79 |
24 |
36 |
36 |
1.3 |
100 |
4 |
M20 |
90 |
|
32 |
41 |
92 |
31 |
43 |
43 |
1.7 |
115 |
4 |
M22 |
100 |
|
40 |
45 |
100 |
39 |
52 |
52 |
2.2 |
125 |
4 |
M24 |
110 |
|
50 |
56 |
142 |
48 |
62 |
62 |
5.6 |
165 |
4 |
M22 |
115 |
|
65 |
63 |
162 |
62 |
75 |
75 |
7.5 |
190 |
8 |
M27 |
130 |
|
80 |
71 |
176 |
76 |
90 |
90 |
9 |
205 |
8 |
M27 |
140 |
|
100 |
80 |
208 |
95 |
112 |
112 |
14 |
240 |
8 |
M30 |
155 |
|
125 |
110 |
247 |
110 |
132 |
132 |
27 |
285 |
8 |
M36 |
195 |
|
150 |
125 |
280 |
127 |
158 |
158 |
38 |
318 |
12 |
M36 |
210 |
|
200 |
160 |
356 |
165 |
208 |
208 |
76 |
400 |
12 |
M42 |
260 |