直通式襯膠截止閥、具有結構緊湊、啟閉靈活、耐腐蝕性能強，行程短(一般為公稱通經1/4)等優點。被廣泛應用在石油、化工等管路系統中做截斷介質用，但塑料襯里的截止閥嚴禁用做流量調節，以免節流口處產生的高速介質流沖蝕破壞密封面。
要零部件材料表
|
序號
|
零件名稱
|
灰鑄鐵
|
鑄鋼
|
不銹耐酸鑄鋼
|
超低碳不銹耐酸鑄鋼
|
|
Z
|
C
|
P
|
R
|
PL
|
RL
|
|
1
|
閥體/閥蓋
|
HT250
|
WCB
|
CF8
|
CF8M
|
CF3
|
CF3M
|
|
2
|
球體/閥桿
|
25
|
2Cr13
|
1Cr18Ni9
|
1Cr18Ni12Mo2Ti
|
00Cr18Ni10
|
00Cr17Ni14Mo2
|
|
3
|
襯里/閥座
|
PCTEF(F3),FEP(F46),PFA(可溶F4),PP,PO
|
|
4
|
填料壓蓋
|
WCB
|
CF8
|
CF8M
|
CF3
|
CF3M
|
|
5
|
填料
|
PTFE(F4)
|
PTFE(F4)
|
PTFE(F4)
|
|
6
|
活節螺栓
|
35
|
1Cr17Ni2
|
1Cr17Ni2
|
|
7
|
閥桿螺母
|
ZCuAl10Fe3
|
ZCuAl10Fe3
|
ZCuAl10Fe3
|
|
8
|
緊固螺栓
|
35
|
1Cr17Ni2
|
1Cr18Ni9Ti
|
|
9
|
螺母
|
45
|
0Cr18Ni9
|
0Cr18Ni9
|
|
10
|
手柄
|
WCB
|
WCB
|
WCB
|
|
公稱通經
|
L
|
D
|
D1
|
D2
|
f
|
b
|
Z-φd
|
|
DN(mm)
|
NPS(inch)
|
PN1.0MPa
|
|
15
|
1/2
|
130
|
95
|
65
|
45
|
2
|
14
|
4-φ14
|
|
20
|
3/4
|
150
|
105
|
75
|
55
|
2
|
16
|
4-φ14
|
|
25
|
1
|
160
|
115
|
85
|
65
|
2
|
16
|
4-φ14
|
|
32
|
11/4
|
180
|
135
|
100
|
78
|
2
|
18
|
4-φ18
|
|
40
|
11/2
|
200
|
145
|
110
|
85
|
3
|
18
|
4-φ18
|
|
50
|
2
|
230
|
160
|
125
|
100
|
3
|
20
|
4-φ18
|
|
65
|
21/2
|
290
|
180
|
145
|
120
|
3
|
20
|
4-φ18
|
|
80
|
3
|
310
|
195
|
160
|
135
|
3
|
22
|
4-φ18
|
|
100
|
4
|
350
|
215
|
180
|
155
|
3
|
22
|
8-φ18
|
|
125
|
5
|
400
|
245
|
210
|
185
|
3
|
24
|
8-φ18
|
|
150
|
6
|
480
|
280
|
240
|
210
|
3
|
24
|
8-φ23
|
|
200
|
8
|
495
|
335
|
295
|
265
|
3
|
26
|
8-φ23
|
|
250
|
10
|
622
|
390
|
350
|
320
|
3
|
28
|
12-φ23
|
|
300
|
12
|
698
|
440
|
400
|
368
|
4
|
28
|
12-φ23
|
|
350
|
14
|
787
|
500
|
460
|
428
|
4
|
30
|
16-φ23
|
|
PN1.6MPa
|
|
15
|
1/2
|
130
|
95
|
65
|
45
|
2
|
14
|
4-φ14
|
|
20
|
3/4
|
150
|
105
|
75
|
55
|
2
|
16
|
4-φ14
|
|
25
|
1
|
160
|
115
|
85
|
65
|
2
|
16
|
4-φ14
|
|
32
|
11/4
|
180
|
135
|
100
|
78
|
2
|
18
|
4-φ18
|
|
40
|
11/2
|
200
|
145
|
110
|
85
|
3
|
18
|
4-φ18
|
|
50
|
2
|
230
|
160
|
125
|
100
|
3
|
20
|
4-φ18
|
|
65
|
21/2
|
290
|
180
|
145
|
120
|
3
|
20
|
4-φ18
|
|
80
|
3
|
310
|
195
|
160
|
135
|
3
|
22
|
8-φ18
|
|
100
|
4
|
350
|
215
|
180
|
155
|
3
|
24
|
8-φ18
|
|
125
|
5
|
400
|
245
|
210
|
185
|
3
|
26
|
8-φ18
|
|
150
|
6
|
480
|
280
|
240
|
210
|
3
|
28
|
8-φ23
|
|
200
|
8
|
495
|
335
|
295
|
265
|
3
|
30
|
12-φ23
|
|
250
|
10
|
622
|
405
|
355
|
320
|
3
|
32
|
12-φ25
|
|
300
|
12
|
698
|
460
|
410
|
375
|
4
|
34
|
12-φ25
|
|
PN2.5MPa
|
|
15
|
1/2
|
130
|
95
|
65
|
45
|
2
|
16
|
4-φ14
|
|
20
|
3/4
|
150
|
105
|
75
|
55
|
2
|
16
|
4-φ14
|
|
25
|
1
|
160
|
115
|
85
|
65
|
2
|
16
|
4-φ14
|
|
32
|
11/4
|
180
|
135
|
100
|
78
|
2
|
18
|
4-φ18
|
|
40
|
11/2
|
200
|
145
|
110
|
85
|
3
|
18
|
4-φ18
|
|
50
|
2
|
230
|
160
|
125
|
100
|
3
|
20
|
4-φ18
|
|
65
|
21/2
|
290
|
180
|
145
|
120
|
3
|
22
|
8-φ18
|
|
80
|
3
|
310
|
195
|
160
|
135
|
3
|
22
|
8-φ18
|
|
100
|
4
|
350
|
230
|
190
|
160
|
3
|
24
|
8-φ23
|
|
125
|
5
|
400
|
270
|
220
|
188
|
3
|
28
|
8-φ25
|
|
150
|
