J41Y-16C/J41Y-25/J41Y-40/J41Y-64/J41Y-100/J41Y-160P/R/RL手动截止阀》不锈钢截止阀价格,法兰式截止阀标准,截止阀的启闭件是塞形的阀瓣,密封面呈平面或锥面,阀瓣沿流体的中心线作直线运动。阀杆的运动形式,有升降杆式(阀杆升降,手轮不升降),也有升降旋转杆式(手轮与阀杆一起旋转升降,螺母设在阀体上)。截止阀只适用于全开和全关,不允许作调节和节流。
截止阀属于强制密封式阀门,所以在阀门关闭时,必须向阀瓣施加压力,以强制密封面不泄漏。当介质由阀瓣下方进入阀门时,操作力所需要克服的阻力,是阀杆和填料的摩擦力与由介质的压力所产生的推力,关阀门的力比开阀门的力大,所以阀杆的直径要大,否则会发生阀杆顶弯的故障。近年来,从自密封的阀门出现后,截止阀的介质流向就改由阀瓣上方进入阀腔,这时在介质压力作用下,关阀门的力小,而开阀门的力大,阀杆的直径可以相应地减少。同时,在介质作用下,这种形式的阀门也较严密。我国阀门“三化给”曾规定,截止阀的流向,一律采用自上而下。
截止阀开启时,阀瓣的开启高度,为公称直径的25%~30%时,流量已达到zui大,表示阀门已达全开位置。所以截止阀的全开位置,应由阀瓣的行程来决定。
J41H/Y碳钢截止阀主要尺寸
2.5MPa |
DN |
L |
D |
D1 |
D2 |
B |
n-φd |
H |
D0 |
凸面法兰 |
10 |
130 |
90 |
60 |
40 |
16 |
4-φ14 |
198 |
120 |
15 |
130 |
95 |
65 |
45 |
16 |
4-φ14 |
218 |
120 |
|
20 |
150 |
105 |
75 |
55 |
16 |
4-φ14 |
258 |
140 |
|
25 |
160 |
115 |
85 |
65 |
16 |
4-φ14 |
275 |
140 |
|
32 |
180 |
135 |
100 |
78 |
18 |
4-φ18 |
280 |
160 |
|
40 |
200 |
145 |
110 |
85 |
18 |
4-φ18 |
330 |
180 |
|
50 |
230 |
160 |
125 |
100 |
20 |
4-φ18 |
350 |
200 |
|
65 |
290 |
180 |
145 |
120 |
22 |
8-φ18 |
400 |
280 |
|
80 |
310 |
195 |
160 |
135 |
22 |
8-φ18 |
355 |
280 |
|
100 |
350 |
230 |
190 |
160 |
24 |
8-φ23 |
415 |
320 |
|
125 |
400 |
270 |
220 |
188 |
28 |
8-φ25 |
460 |
360 |
|
150 |
480 |
300 |
250 |
218 |
30 |
8-φ25 |
510 |
450 |
|
200 |
600 |
360 |
3lO |
278 |
34 |
12-φ25 |
710 |
500 |
|
250 |
650 |
425 |
370 |
332 |
36 |
12-φ30 |
786 |
550 |
|
300 |
750 |
485 |
430 |
390 |
40 |
16-φ30 |
925 |
600 |
|
350 |
850 |
550 |
490 |
448 |
44 |
16-φ34 |
1075 |
700 |
|
400 |
950 |
610 |
550 |
505 |
48 |
16-φ34 |
1235 |
800 |
|
450 |
1200 |
660 |
600 |
555 |
50 |
20-φ34 |
- |
1000 |
|
500 |
1250 |
730 |
660 |
61O |
52 |
20-φ41 |
- |
1000 |
主要尺寸
4.OMPa |
DN |
L |
D |
Dl |
D2 |
D6 |
b |
n-φd |
H |
DO |
凹凸法兰 |
10 |
130 |
90 |
60 |
41 |
35 |
14 |
4-φ14 |
198 |
120 |
15 |
130 |
95 |
65 |
45 |
40 |
16 |
4-φ14 |
233 |
120 |
|
20 |
150 |
105 |
75 |
55 |
51 |
16 |
4-φ14 |
275 |
140 |
|
25 |
160 |
115 |
85 |
65 |
58 |
16 |
4-φ14 |
285 |
160 |
|
32 |
180 |
135 |
100 |
78 |
66 |
18 |
4-φ18 |
302 |
160 |
|
40 |
200 |
145 |
110 |
85 |
76 |
18 |
4-φ18 |
355 |
200 |
|
50 |
230 |
160 |
125 |
100 |
88 |
20 |
4-φ18 |
373 |
200 |
|
65 |
290 |
180 |
145 |
120 |
110 |
22 |
8-φ18 |
408 |
280 |
|
80 |
310 |
195 |
160 |
135 |
121 |
22 |
8-φ18 |
436 |
280 |
|
100 |
350 |
230 |
190 |
160 |
150 |
24 |
8-φ23 |
480 |
320 |
|
125 |
400 |
270 |
220 |
188 |
176 |
28 |
8-φ25 |
588 |
360 |
|
150 |
480 |
300 |
250 |
218 |
204 |
30 |
8-φ25 |
611 |
400 |
|
200 |
600 |
375 |
320 |
282 |
260 |
38 |
12-φ30 |
720 |
400 |
|
6.4MPa |
15 |
170 |
105 |
75 |
55 |
40 |
18 |
4-φ14 |
195 |
400 |
凹凸法兰 |
20 |
190 |
125 |
90 |
68 |
51 |
20 |
4-φ18 |
228 |
160 |
25 |
210 |
135 |
100 |
78 |
58 |
22 |
4-φ18 |
275 |
180 |
|
32 |
230 |
150 |
110 |
82 |
66 |
24 |
4-φ23 |
325 |
200 |
|
40 |
260 |
165 |
125 |
95 |
76 |
24 |
4-φ23 |
360 |
240 |
|
50 |
300 |
175 |
135 |
105 |
88 |
26 |
4-φ23 |
4lO |
280 |
|
65 |
340 |
200 |
160 |
130 |
110 |
28 |
8-φ23 |
450 |
320 |
|
80 |
380 |
210 |
170 |
140 |
121 |
30 |
8-φ23 |
485 |
360 |
|
100 |
430 |
250 |
200 |
168 |
150 |
32 |
8-φ25 |
537 |
400 |
|
125 |
500 |
295 |
240 |
202 |
176 |
36 |
8-φ30 |
631 |
400 |
|
150 |
550 |
340 |
280 |
240 |
204 |
38 |
8-φ34 |
646 |
450 |
|
200 |
650 |
405 |
345 |
300 |
260 |
44 |
12-φ34 |
813 |
500 |
|
10.0MPa |
10 |
170 |
100 |
70 |
50 |
35 |
20 |
4-φ14 |
198 |
140 |
凹凸法兰 |
15 |
170 |
105 |
75 |
55 |
40 |
20 |
4-φ14 |
202 |
140 |
20 |
190 |
125 |
90 |
68 |
51 |
22 |
4-φ18 |
228 |
160 |
|
25 |
210 |
135 |
100 |
78 |
58 |
24 |
4-φ18 |
250 |
180 |
|
32 |
230 |
150 |
110 |
82 |
66 |
24 |
4-φ23 |
326 |
200 |
|
40 |
260 |
165 |
125 |
95 |
76 |
26 |
4-φ23 |
360 |
240 |
|
50 |
300 |
195 |
145 |
112 |
88 |
28 |
4-φ25 |
414 |
280 |
|
65 |
340 |
220 |
170 |
138 |
110 |
32 |
8-φ25 |
434 |
320 |
|
80 |
380 |
230 |
180 |
148 |
121 |
34 |
8-φ25 |
547 |
360 |
|
100 |
430 |
265 |
2lO |
172 |
150 |
38 |
8-φ30 |
621 |
400 |
|
125 |
500 |
310 |
250 |
210 |
176 |
42 |
8-φ34 |
732 |
400 |
|
150 |
550 |
350 |
, 290 |
250 |
204 |
46 |
12-φ34 |
840 |
450 |
|
200 |
650 |
430 |
360 |
312 |
260 |
54 |
12-φ41 |
925 |
500 |
|
16.0MPa |
15 |
170 |
110 |
75 |
52 |
40 |
24 |
4-φ18 |
148 |
140 |
凹凸法兰 |
20 |
190 |
130 |
90 |
62 |
51 |
26 |
4-φ23 |
158 |
160 |
25 |
210 |
140 |
100 |
72 |
58 |
28 |
4-φ23 |
175 |
180 |
|
32 |
230 |
165 |
115 |
85 |
66 |
30 |
4-φ25 |
200 |
200 |
|
40 |
260 |
175 |
125 |
92 |
76 |
32 |
4-φ27 |
231 |
240 |
|
50 |
300 |
215 |
165 |
132 |
88 |
36 |
8-φ25 |
262 |
280 |
|
65 |
340 |
245 |
190 |
152 |
110 |
44 |
8-φ30 |
303 |
320 |
|
80 |
380 |
260 |
205 |
168 |
121 |
46 |
8-φ30 |
341 |
360 |
|
100 |
430 |
300 |
240 |
200 |
150 |
48 |
8-φ34 |
485 |
400 |