低溫閘閥�(chǎn)品特點：
1、為防止中腔異常升壓，在閘板的進口�(cè)�(shè)置了泄壓�
2、根�(jù)閥門的工作溫度確定閥蓋的頂部長度，確保閥桿填料的可靠密封
3、根�(jù)工作溫度合理選用填料，墊片等零件的材�
4、嚴(yán)格控制材料的化學(xué)成份及低溫沖擊韌性等力學(xué)性能指標(biāo)
5、采用多種配管法蘭標(biāo)�(zhǔn)及密封面型式，適用于各種工程需�
低溫閘閥�(zhí)行標(biāo)�(zhǔn)�
|
�(shè)計與制� |
�(jié)�(gòu)長度 |
法蘭尺寸 |
壓力-溫度 |
試驗-檢驗 |
|
JB/T7749 |
GB12221 |
JB79 |
Gb9131 |
JB/T90 |
低溫閘閥壓力試驗�
|
公稱壓力PN |
1.6 |
2.5 |
4.0 |
6.4 |
10.0 |
|
強度試驗 |
2.4 |
3.8 |
6.0 |
9.6 |
15.0 |
|
水密封試� |
1.8 |
2.8 |
4.4 |
7.0 |
11.0 |
|
上密封試� |
1.8 |
2.8 |
4.4 |
7.0 |
11.0 |
|
氣密封試� |
0.4-0.7 |
低溫閘閥主要外形連接尺寸�
|
1.6MPa |
DN |
L |
D |
D1 |
D2 |
b |
n-Φd |
H |
D0 |
凸面法法
RF
DZ40Y-16LCB
DZ40Y-16LC1
DZ40Y-16LC2
DZ40Y-16LC3
DZ40Y-16LC4
DZ40Y-16P
DZ40Y-16R |
20 |
150 |
105 |
75 |
55 |
14 |
4-Φ14 |
320 |
140 |
|
25 |
160 |
115 |
85 |
65 |
14 |
4-Φ14 |
350 |
160 |
|
32 |
180 |
135 |
100 |
78 |
16 |
4-Φ18 |
385 |
180 |
|
40 |
200 |
145 |
110 |
85 |
16 |
4-Φ18 |
420 |
220 |
|
50 |
250 |
160 |
125 |
100 |
16 |
4-Φ18 |
540 |
240 |
|
65 |
265 |
180 |
145 |
120 |
18 |
4-Φ18 |
610 |
240 |
|
80 |
280 |
195 |
160 |
135 |
20 |
8-Φ18 |
690 |
280 |
|
100 |
300 |
215 |
180 |
155 |
20 |
8-Φ18 |
780 |
300 |
|
125 |
325 |
245 |
210 |
185 |
22 |
8-Φ18 |
930 |
320 |
|
150 |
350 |
280 |
240 |
210 |
24 |
8-Φ23 |
980 |
350 |
|
200 |
400 |
335 |
295 |
265 |
26 |
12-Φ26 |
1180 |
400 |
|
250 |
450 |
105 |
355 |
320 |
30 |
12-Φ30 |
1390 |
450 |
|
300 |
500 |
460 |
410 |
375 |
30 |
12-Φ30 |
1620 |
500 |
|
350 |
550 |
520 |
470 |
435 |
34 |
16-Φ34 |
1810 |
500 |
|
400 |
600 |
580 |
525 |
485 |
36 |
16-Φ36 |
1970 |
550 |
|
2.5MPa |
20 |
150 |
105 |
75 |
55 |
16 |
4-Φ16 |
320 |
140 |
凸面法法
RF
DZ40Y-25LCB
DZ40Y-25LC1
DZ40Y-25LC2
DZ40Y-25LC3
DZ40Y-25LC4
DZ40Y-25P
DZ40Y-25R |
25 |
160 |
115 |
85 |
65 |
16 |
4-Φ16 |
350 |
160 |
|
32 |
180 |
135 |
100 |
78 |
18 |
4-Φ18 |
385 |
180 |
|
40 |
200 |
145 |
110 |
85 |
18 |
4-Φ18 |
420 |
200 |
|
50 |
250 |
160 |
125 |
100 |
20 |
4-Φ20 |
540 |
240 |
|
65 |
265 |
180 |
145 |
125 |
22 |
8-Φ22 |
510 |
240 |
|
80 |
280 |
195 |
160 |
135 |
22 |
8-Φ22 |
690 |
280 |
|
100 |
300 |
230 |
190 |
160 |
24 |
8-Φ24 |
780 |
300 |
|
125 |
325 |
270 |
220 |
188 |
28 |
8-Φ28 |
930 |
300 |
|
150 |
350 |
300 |
250 |
218 |
30 |
8-Φ30 |
980 |
320 |
|
200 |
400 |
360 |
310 |
278 |
34 |
12-Φ34 |
1180 |
360 |
|
250 |
450 |
425 |
370 |
332 |
36 |
12-Φ36 |
1390 |
400 |
|
300 |
500 |
485 |
430 |
390 |
40 |
16-Φ40 |
1620 |
450 |
|
350 |
550 |
550 |
490 |
448 |
44 |
16-Φ44 |
1810 |
500 |
|
400 |
600 |
610 |
550 |
505 |
48 |
16-Φ48 |
1990 |
560 |
|
