德标对夹式三偏心硬密封蝶阀
特点
对夹式蝶阀结构简单、体积小、重量轻。蝶阀有弹性密封和金属密封两种密封型式。弹性密封阀门，密封圈可以镶嵌在阀体上或附在蝶板周边。
三偏心金属密封蝶阀的密封原理：
三偏心蝶阀具有双向无气泡紧密壮关闭性能。这种几何形状保证阀瓣密封只是在关闭位置时才与阀体阀座接触，因此不会产生摩擦或磨损，并且产生一种扭矩使得弹性密封具有足够的“焊接”性能，确保密封接触的均匀一致性。
|
 |
主要连接尺寸
|
压力 |
NPS |
DN |
L |
K |
Z-φd |
d |
|
PN1.0 |
2 |
50 |
43 |
125 |
4-18 |
99 |
|
2-1/2 |
65 |
46 |
145 |
4-18 |
118 |
|
3 |
80 |
48 |
160 |
8-18 |
132 |
|
4 |
100 |
54 |
180 |
8-18 |
156 |
|
6 |
150 |
57 |
240 |
8-22 |
211 |
|
8 |
200 |
64 |
295 |
8-22 |
266 |
|
10 |
250 |
71 |
350 |
12-22 |
319 |
|
12 |
300 |
81 |
400 |
12-22 |
370 |
|
14 |
350 |
92 |
460 |
16-22 |
429 |
|
16 |
400 |
102 |
515 |
16-26 |
480 |
|
18 |
450 |
114 |
565 |
20-26 |
530 |
|
20 |
500 |
127 |
620 |
20-26 |
582 |
|
24 |
600 |
154 |
725 |
20-30 |
682 |
|
压力 |
NPS |
DN |
L |
K |
Z-φd |
d |
|
PN1.6 |
2 |
50 |
43 |
125 |
4-18 |
99 |
|
2-1/2 |
65 |
46 |
145 |
4-18 |
118 |
|
3 |
80 |
48 |
160 |
8-18 |
132 |
|
4 |
100 |
54 |
180 |
8-18 |
156 |
|
6 |
150 |
57 |
240 |
8-22 |
211 |
|
8 |
200 |
64 |
295 |
12-22 |
266 |
|
10 |
250 |
71 |
355 |
12-26 |
319 |
|
12 |
300 |
81 |
410 |
12-26 |
370 |
|
14 |
350 |
92 |
470 |
12-26 |
429 |
|
16 |
400 |
102 |
525 |
16-30 |
480 |
|
18 |
450 |
114 |
585 |
20-30 |
548 |
|
20 |
500 |
127 |
650 |
20-33 |
609 |
|
24 |
600 |
154 |
770 |
20-36 |
720 |
|
压力 |
NPS |
DN |
L |
K |
Z-φd |
d |
|
PN2.5 |
2 |
50 |
43 |
125 |
4-18 |
99 |
|
2-1/2 |
65 |
46 |
145 |
8-18 |
108 |
|
3 |
80 |
48 |
160 |
8-18 |
132 |
|
4 |
100 |
54 |
190 |
8-22 |
156 |
|
6 |
150 |
57 |
250 |
8-26 |
211 |
|
8 |
200 |
64 |
310 |
12-26 |
274 |
|
10 |
250 |
71 |
370 |
12-30 |
330 |
|
12 |
300 |
81 |
430 |
16-30 |
389 |
|
14 |
350 |
92 |
490 |
16-33 |
448 |
|
16 |
400 |
102 |
550 |
16-36 |
503 |
|
18 |
450 |
114 |
600 |
20-36 |
548 |
|
20 |
500 |
127 |
660 |
20-36 |
609 |
|
24 |
600 |
154 |
770 |
20-39 |
720 |
|
