一、气动三通球阀结构特点和应用范围
L（T）形气动球阀是由气动执行机构和三通阀组成，是一种旋转类切断调节阀门，具有关闭严密，结构紧凑，重量轻，维修方便等优点。广泛用于气体、液体、蒸汽、油品等腐蚀性介质的管道自动化控制。
二、气动三通球阀主要外形尺寸及附图
|
公称压力
或压力级
|
公称通径
|
尺寸（mm）
|
|||||||
|
mm
|
in
|
L
|
L1
|
D
|
D1
|
D2
|
b
|
z-Φd
|
|
|
|
15
|
|
130
|
65
|
95
|
65
|
45
|
14
|
4-14
|
|
20
|
|
150
|
75
|
105
|
75
|
55/58
|
14/16
|
4-14
|
|
|
25
|
|
160
|
80
|
115
|
85
|
65/68
|
14/16
|
4-14
|
|
|
32
|
|
180
|
90
|
135/140
|
100
|
78
|
16
|
4-18
|
|
|
PN1.6MPa
|
40
|
|
200
|
100
|
145/150
|
110
|
85/88
|
16
|
4-18
|
|
50
|
|
230
|
115
|
160/165
|
125
|
100/102
|
16/18
|
4-18
|
|
|
65
|
|
290
|
145
|
180/185
|
145
|
120/122
|
18
|
4-18
|
|
|
80
|
|
310
|
155
|
195/200
|
160
|
135/138
|
20
|
4-18
|
|
|
100
|
|
350
|
175
|
215/220
|
180
|
155/158
|
20
|
4-18
|
|
|
125
|
|
400
|
200
|
245/250
|
210
|
185/188
|
22
|
4-18
|
|
|
150
|
|
480
|
240
|
280/285
|
240
|
210/212
|
24/22
|
8-23/8-22
|
|
|
PN2.5MPa
|
15
|
|
130
|
65
|
95
|
65
|
45
|
16
|
4-14
|
|
20
|
|
150
|
75
|
105
|
75
|
55/58
|
16
|
4-14
|
|
|
25
|
|
160
|
80
|
115
|
85
|
65/68
|
16
|
4-14
|
|
|
32
|
|
180
|
90
|
135/140
|
100
|
78
|
18
|
4-18
|
|
|
PN2.5MPa
|
40
|
|
200
|
100
|
145/150
|
110
|
85/88
|
18
|
4-18
|
|
50
|
|
230
|
115
|
160/165
|
125
|
100/102
|
20
|
4-18
|
|
|
65
|
|
290
|
145
|
180/185
|
145
|
120/122
|
22
|
8-18
|
|
|
80
|
|
310
|
155
|
195/200
|
160
|
135/138
|
22/24
|
8-18
|
|
|
100
|
|
350
|
175
|
230/235
|
190
|
160/162
|
24
|
8-23/8-22
|
|
|
125
|
|
400
|
200
|
270
|
220
|
188
|
28/26
|
8-25/8-26
|
|
|
150
|
|
480
|
240
|
300
|
250
|
218
|
30/28
|
8-25/8-26
|
|