概述
國標截止閥(節(jié)流閥)的啟閉件是圓柱形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動。國標截止閥只適用于全開和全關，一般不用來調節(jié)流量，定做時允許作調節(jié)和節(jié)流。
應用范圍
法蘭連接國標截止閥適用于公稱壓力PN1.6～16.0Mpa，工作溫度-29～550℃的石油、化工、制藥、化肥、電力行業(yè)等各種工況的管道上，切斷或接通介質。截止閥適用介質為：水、油品、蒸汽、酸性介質等。操作方式有：手動、齒輪傳動、電動、氣動等。
執(zhí)行標準
|
設計與制造
|
結構長度
|
法蘭尺寸
|
壓力-溫度
|
試驗-檢驗
|
|
GB12235
|
GB12221
|
GB9113 JB79
|
GB9131
|
GB/T13927 JB/T9092
|
壓力試驗
|
公稱壓力
|
1.6
|
2.5
|
4.0
|
6.4
|
10.0
|
16.0
|
|
強度試驗
|
2.4
|
3.8
|
6.0
|
9.6
|
15.0
|
24.0
|
|
水密封試驗
|
1.8
|
2.8
|
4.4
|
7.4
|
11.0
|
18.0
|
|
上密封試驗
|
1.8
|
2.8
|
4.4
|
7.04
|
11.0
|
18.0
|
|
氣密封試驗
|
0.4-0.7
|
|
|
|
|
|
主要零件材料及性能
|
體蓋扳
|
閥桿
|
密封面
|
墊片(環(huán))
|
填料
|
工作溫度℃
|
適用介質
|
|
WCB
|
2Cr13
|
13Cr STL 本體材料 尼龍
|
增強柔性石墨 1Crl3／柔性石墨 08軟鋼
0Cr18Ni9Ti OCr18Ni12Mo2Ti
|
柔性石墨 增強柔性石墨
SFB-260 SFP-260
|
≤425
|
水、蒸汽、油品
|
|
WC1
|
38CrMoAI 25Cr2MoV
|
≤450
|
|
WC6
|
≤540
|
|
WC9
|
≤570
|
|
ZGCr5Mo
|
≤540
|
|
ZG1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
≤200
|
硝酸類
|
|
ZGCr18Ni12Mo2Ti
|
1C18Ni12Mo2Ti
|
≤200
|
醋酸類
|
PN l．6MPa
規(guī)格主要尺寸
|
1.6MPa
|
DN
|
L
|
D
|
D1
|
D2
|
b
|
n-Φd
|
H
|
D0
|
凸面法蘭 RF
J41H J41Y
J41W J41F
J41N
16C 16P
16R 16I
|
10
|
130
|
90
|
60
|
40
|
14
|
4-Φ14
|
198
|
120
|
|
15
|
130
|
95
|
65
|
45
|
14
|
4-Φ14
|
218
|
120
|
|
20
|
150
|
105
|
75
|
55
|
14
|
4-Φ14
|
258
|
140
|
|
25
|
160
|
115
|
85
|
65
|
14
|
4-Φ14
|
275
|
140
|
|
32
|
180
|
135
|
100
|
78
|
16
|
4-Φ18
|
280
|
160
|
|
40
|
200
|
145
|
110
|
85
|
16
|
4-Φ18
|
330
|
180
|
|
50
|
230
|
160
|
125
|
100
|
16
|
4-Φ18
|
350
|
200
|
|
65
|
290
|
180
|
145
|
120
|
18
|
4-Φ18
|
370
|
280
|
|
80
|
310
|
195
|
160
|
135
|
20
|
8-Φ18
|
400
|
280
|
|
100
|
350
|
215
|
180
|
155
|
20
|
8-Φ18
|
415
|
320
|
|
125
|
400
|
245
|
210
|
185
|
22
|
8-Φ18
|
460
|
360
|
|
150
|
480
|
280
|
240
|
210
|
24
|
8-Φ23
|
510
|
450
|
|
200
|
600
|
335
|
295
|
265
|
26
|
12-Φ23
|
710
|
500
|
|
250
|
650
|
405
|
335
|
320
|
30
|
12-Φ25
|
786
|
550
|
|
300
|
750
|
460
|
410
|
375
|
30
|
12-Φ25
|
925
|
600
|
PN 2.5MPa
規(guī)格主要尺寸
|
2.5MPa
|
DN
|
L
|
D
|
D1
|
D2
|
b
|
n-Φd
|
H
|
D0
|
凸面法蘭 RF
J41H J41Y
J41W J41F
J41N 25C
25P 25R 25I
|
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
|
125
|
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
|
310
|
278
|
34
|
12-Φ25
|
710
|
500
|
|
250
|
622
|
425
|
370
|
332
|
36
|
12-Φ30
|
786
|
550
|
|
300
|
698
|
485
|
430
|
390
|
40
|
16-Φ30
|
925
|
600
|
主要尺寸
|
4.0MPa
|
DN
|
L
|
D
|
D1
|
D2
|
D6
|
b
|
n-Φd
|
H
|
D0
|
凹凸法蘭 MFM
J41H J41Y J41W J41N
40 40P 40R 40I
|
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
|
295
|
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
|
4001
|
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
|
4-14Φ
|
195
|
400
|
凹凸法蘭 MFM
J41H J41Y
J41W J41N
64 64P
64R 64I
|
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
|
410
|
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
|
凹凸法蘭 MFM
J41H J41Y J41W
100 100P 100R 100I
|
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
|
1810
|
148
|
121
|
34
|
8-Φ25
|
547
|
360
|
|
100
|
430
|
265
|
210
|
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
|
|
16.0MPa
|
200
|
65
|
430
|
360
|
312
|
260
|
54
|
12-Φ41
|
925
|
500
|
凹凸法蘭 MFM
J41H J41Y J41W
160 160P
160R 160I
|
15
|
170
|
110
|
75
|
52
|
40
|
24
|
4-Φ18
|
148
|
140
|
|
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
|
在線咨詢 
