截止閥的啟閉件是塞形的閥瓣，密封面呈平面或錐面，閥瓣沿流體的中心線作直線運動。閥桿的運動形式，有升降桿式（閥桿升降，手輪不升降），也有升降旋轉(zhuǎn)桿式（手輪與閥桿一起旋轉(zhuǎn)升降，螺母設(shè)在閥體上）。截止閥只適用于全開和全關(guān)，不允許作調(diào)節(jié)和節(jié)流。
應(yīng)用規(guī)范：
|
結(jié)構(gòu)長度
|
ANSIB16.10
|
設(shè)計標(biāo)準(zhǔn)
|
BS1873
|
|
法蘭尺寸
|
ANSIB16.5
|
檢驗標(biāo)準(zhǔn)
|
API598
|
零部件材質(zhì)：
|
NO.
|
零件名稱
|
Qty.
|
材料M
|
NO.
|
零件名稱
|
Qty.
|
材料
|
|
1
|
閥體
|
1
|
WCB
|
15 |
螺母
|
2
|
A1942H |
|
2
|
閥座
|
2
|
A105+HF
|
16 | 閥母 |
1
|
D-2 |
|
3
|
閘瓣
|
1
|
WCB+F6
|
17 | 墊片 |
1
|
A276410 |
|
4
|
止推墊
|
1
|
A276430
|
18 | 螺母 |
1
|
A291035 |
|
5
|
閘瓣蓋
|
1
|
A276410
|
19 | 手輪 | 1 | 60-40-18 |
|
6
|
閥桿
|
1
|
A18F6
|
20 | 螺釘 | 1 | A291035 |
|
7
|
墊片
|
1
|
304不銹鋼+柔性石墨
|
21 | 手套 | 1 | A276410 |
|
8
|
閥蓋
|
1
|
WCB
|
22 | 填料 | 2 | 柔性石墨+不銹鋼 |
|
9
|
螺柱
|
A193B7 | 23 | 填料 |
4-5
|
||
|
10
|
螺母
|
A1942H | 24 |
隔環(huán)
|
1
|
A276410 | |
|
11
|
銷軸
|
2 | A291035 | 25 |
密封座
|
1
|
A276410 |
|
12
|
開口銷
|
2 | A570Gr.A | 26 |
鉚釘
|
2
|
304 |
|
13
|
壓板
|
1 | WCB |
27
|
銘牌 |
1
|
304 |
| 14 | 螺栓 | 2 | A193B7 |
連接尺寸與重量：
|
NPS
d |
in
|
2
|
2-1/2
|
3
|
4
|
5
|
6
|
8
|
10
|
12
|
14
|
16
|
|
mm
|
51
|
64
|
76
|
102
|
127
|
152
|
203
|
254
|
305
|
337
|
387
|
|
|
L-L1
(BF-BW) |
in
|
8.00 | 8.50 | 9.50 | 11.50 | 14.00 | 16.00 | 19.50 | 24.50 | 27.50 | 31.00 | 36.00 |
|
mm
|
203 | 216 | 241 | 292 | 356 | 406 | 495 | 622 | 698 | 787 | 914 | |
|
L2
(RTJ) |
in
|
8.50 | 9.00 | 10.00 | 12.00 | 14.50 | 16.50 | 20.00 | 25.00 | 28.00 | 31.50 | 36.50 |
|
mm
|
216 | 229 | 254 | 305 | 368 | 419 | 508 | 635 | 711 | 800 | 927 | |
|
d1
|
in
|
3.62 | 4.13 | 5.00 | 6.18 | 7.32 | 8.50 | 10.63 | 12.76 | 15.00 | 16.26 | 18.50 |
|
mm
|
92 | 105 | 127 | 157 | 186 | 216 | 270 | 324 | 381 | 413 | 470 | |
|
d2
|
in
|
4.75 | 5.50 | 6.00 | 7.50 | 8.50 | 9.50 | 11.75 | 14.25 | 17.00 | 18.75 | 21.25 |
|
mm
|
120.5 | 139.5 | 152.5 | 190.5 | 216 | 241.5 | 298.5 | 362 | 432 | 476 | 540 | |
|
D
|
in
|
6.00 | 7.00 | 7.50 | 9.00 | 10.00 | 11.00 | 13.50 | 16.00 | 19.00 | 21.00 | 23.50 |
|
mm
|
152 | 178 | 190 | 229 | 254 | 279 | 343 | 406 | 483 | 533 | 597 | |
|
b
|
in
|
0.75 | 0.88 | 0.94 | 0.94 | 0.94 | 1.02 | 1.14 | 1.22 | 1.26 | 1.38 | 1.46 |
|
mm
|
16 | 17.5 | 19 | 24 | 25 | 26 | 29 | 31 | 32 | 35 | 37 | |
|
n-Φd
|
in
|
4-0.75 | 4-0.75 | 4-0.75 | 4-0.75 | 8-0.87 | 8-0.87 | 8-0.87 | 12-1.00 | 12-1.00 | 12-1.12 | 16-1.12 |
|
mm
|
4-19 | 4-19 | 4-19 | 8-19 | 8-22 | 8-22 | 8-22 | 12-25 | 12-25 | 12-29 | 16-29 | |
|
H
(open) |
in
|
13.43 | 14.45 | 14.76 | 19.02 | 21.14 | 20.35 | 23.23 | 29.69 | 37.05 | 42.72 | 38.03 |
|
mm
|
341 | 367 | 375 | 483 | 537 | 517 | 590 | 754 | 941 | 1085 | 966 | |
|
W
|
in
|
7.87 | 9.84 | 9.84 | 11.81 | 11.81 | 13.78 | 15.75 | 17.72 | 25.20 | 25.20 | 18.11 |
|
mm
|
200 | 250 | 250 | 300 | 300 | 350 | 400 | 450 | 640 | 64 | 460 | |
|
WT(kg)
|
BF
|
22 | 29 | 42 | 64 | 77 | 105 | 154 | 288 | 507 | 617 | 810 |
|
BW
|
19 | 25 | 34 | 49 | 65 | 82 | 131 | 249 | 430 | 580 | 763 |
