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），也有升降旋轉桿式（手輪與閥桿一起旋轉升降，螺母設在閥體上）。截止閥只適用于全開和全關，不允許作調節(jié)和節(jié)流。
主要特點及用途
- 結構緊湊、設計合理，閥門剛性好，通道流暢，流阻系數小。
- 密封面采用不銹鋼和硬質合金，使用壽命長
- 采用柔性石墨填料、密封可靠、操作輕便靈活
- 驅動方式分手動、電動、氣動、齒輪傳功，結構型式：彈性楔式單閘板、剛性楔式單閘板和雙閘板型式。
- 廣泛適用于石油化工，火力發(fā)電廠等油品、水蒸汽管路上作接通或截斷管路中介質的啟閉裝置。
主要性能規(guī)范
試驗壓力
公稱壓力PN(MPa)
|
實驗壓力(MPa) |
| 殼體 |
密封(液) |
密封(氣) |
上密封 |
| 1.6 |
2.4 |
1.8 |
0.6 |
1.8 |
| 2.5 |
3.8 |
2.8 |
0.6 |
2.8 |
| 4.0 |
6.0 |
4.4 |
0.6 |
4.4 |
| 6.4 |
9.6 |
7.0 |
0.6 |
7.0 |
| 10.0 |
15.0 |
11.0 |
0.6 |
11.0 |
| 16.0 |
24.0 |
18.0 |
0.6 |
18.0 |
適用范圍
殼體材料
|
適用介質
|
適用溫度(℃)
|
| 碳素鋼(C型) |
水、蒸汽、油品 |
≤425 |
| |
硝酸類 |
≤200 |
| |
醋酸類 |
≤200 |
| |
水、蒸汽、油品 |
≤550 |
主要零件材料
閥體、閥蓋
|
閥板、閥座 |
閥桿 |
閥桿螺母 |
填料 |
手輪 |
碳素鋼
|
優(yōu)質碳鋼+硬質合金或不銹鋼 |
鉻不銹鋼 |
鋁青銅 |
石墨石棉盤根 |
可鍛鑄鐵 |
鉻鎳鈦鋼
|
不銹鋼、不銹鋼+硬質合金 |
鉻鎳鈦不銹鋼 |
鋁青銅 |
浸聚四氟乙 |
可鍛鑄鐵 |
鉻鎳鉬鈦鋼
|
不銹鋼、不銹鋼+硬質合金 |
鉻鎳鉬鈦不銹鋼 |
鋁青銅 |
烯石棉盤根 |
可鍛鑄鐵 |
鉻鉬鋼
|
合金鋼+硬質合金 |
鉻鉬鋁鋼 |
鋁青銅 |
柔性石墨 |
可鍛鑄鐵 |
主要尺寸及重量
公稱通徑
|
主要外形尺寸和連接尺寸(mm) |
電動裝置
|
重量 |
| L |
D |
D1 |
D2 |
b |
f |
z-d |
H |
| |
Z940H |
-16C |
Z940 |
Y-16P |
Z940 |
Y-16R |
Z940 |
W-16P |
Z940 |
W-16R |
Z940 |
Y-16I |
| |
Z941Y |
Z941 |
Z941 |
Z941 |
Z941 |
Z941 |
|
| 40 |
200 |
145 |
110 |
85 |
16 |
3 |
4-18 |
595 |
DZW15 |
56 |
| 50 |
250 |
160 |
125 |
100 |
16 |
3 |
4-18 |
653 |
DZW20 |
59 |
| 65 |
265 |
180 |
145 |
120 |
18 |
3 |
4-18 |
665 |
DZW20 |
62 |
| 80 |
280 |
195 |
160 |
135 |
20 |
3 |
8-18 |
725 |
DZW20 |
74 |
| 100 |
300 |
215 |
180 |
155 |
20 |
3 |
8-18 |
787 |
DZW20 |
92 |
| 150 |
350 |
280 |
240 |
210 |
24 |
3 |
8-23 |
955 |
DZW30 |
161 |
| 200 |
400 |
335 |
295 |
265 |
26 |
3 |
12-23 |
1105 |
DZW30 |
219 |
| 250 |
450 |
405 |
355 |
320 |
30 |
3 |
12-25 |
1343 |
DZW45 |
376 |
| 300 |
500 |
460 |
410 |
375 |
30 |
4 |
12-25 |
1516 |
DZW60 |
484 |
| 350 |
550 |
520 |
470 |
435 |
34 |
4 |
16-25 |
1678 |
DZW60 |
695 |
| 400 |
600 |
580 |
525 |
485 |
36 |
4 |
16-30 |
1849 |
DZW90 |
977 |
| 450 |
650 |
640 |
585 |
545 |
40 |
4 |
20-30 |
1937 |
DZW90 |
1033 |
| 500 |
700 |
705 |
650 |
608 |
44 |
4 |
20-34 |
2234 |
DZW120 |
1087 |
| 600 |
800 |
840 |
770 |
718 |
48 |
5 |
20-41 |
2432 |
DZW180 |
1357 |
| 700 |
900 |
910 |
840 |
788 |
50 |
5 |
24-41 |
2489 |
DZW250 |
1481 |
| 800 |
1000 |
1020 |
950 |
898 |
52 |
5 |
24-41 |
2643 |
DZW350 |
1845 |
注:DN700、DN800的型號為Z942型NOTE:DN700、DN800type is Z942.主要尺寸及重量
公稱通徑
|
主要外形尺寸和連接尺寸(mm) |
電動裝置
|
重量(kg)
|
| L |
D |
D1 |
D2 |
b |
f |
z-d |
H |
| |
Z940H |
-25C |
Z940 |
Y-25P |
Z940 |
Y-25R |
Z940 |
W-25P |
Z940 |
W-25R |
Z940 |
Y-25I |
| |
Z941Y |
Z941 |
Z941 |
Z941 |
Z941 |
Z941 |
|
| 40 |
200 |
145 |
110 |
85 |
18 |
3 |
4-18 |
595 |
DZW15 |
60 |
| 50 |
250 |
160 |
125 |
100 |
20 |
3 |
4-18 |
653 |
DZW20 |
64 |
| 65 |
265 |
180 |
145 |
120 |
22 |
3 |
8-18 |
665 |
DZW20 |
65 |
| 80 |
280 |
195 |
160 |
135 |
22 |
3 |
8-18 |
725 |
DZW20 |
79 |
| 100 |
300 |
230 |
190 |
160 |
24 |
3 |
8-23 |
787 |
DZW20 |
98 |
| 125 |
325 |
270 |
220 |
188 |
28 |
3 |
8-25 |
902 |
DZW30 |
154 |
| 150 |
350 |
300 |
250 |
218 |
30 |
3 |
8-25 |
955 |
DZW30 |
168 |
| 200 |
400 |
360 |
310 |
278 |
34 |
3 |
12-25 |
1105 |
DZW45 |
219 |
| 250 |
450 |
425 |
370 |
332 |
36 |
3 |
12-30 |
1343 |
DZW45 |
390 |
| 300 |
500 |
485 |
430 |
390 |
40 |
4 |
12-30 |
1516 |
DZW60 |
505 |
| 350 |
550 |
550 |
490 |
448 |
44 |
4 |
16-30 |
1678 |
DZW60 |
736 |
| 400 |
600 |
610 |
550 |
505 |
48 |
4 |
16-34 |
1849 |
DZW90 |
1027 |
| 450 |
650 |
660 |
600 |
555 |
50 |
4 |
16-34 |
1937 |
DZW90 |
1139 |
| 500 |
700 |
730 |
660 |
610 |
52 |
4 |
20-34 |
2234 |
DZW120 |
1228 |
| 600 |
800 |
840 |
770 |
718 |
56 |
5 |
20-41 |
2432 |
DZW180 |
1502 |
| 700 |
900 |
955 |
875 |
815 |
60 |
5 |
20-41 |
2489 |
DZW250 |
1617 |
| 800 |
1000 |
1070 |
990 |
930 |
64 |
5 |
24-48 |
2643 |
DZW350 |
1923 |
DN700、DN800的型號為Z942型 NOTE:DN700、DN800type is Z942.主要尺寸及重量Main dimensions and weight
公稱通徑
|
主要外形尺寸和連接尺寸(mm) |
電動裝置
|
重量(kg)
|
| L |
D |
D1 |
D2 |
D6 |
b |
z-d |
f |
f2 |
H |
| |
Z940H |
-40 |
Z940 |
Y-40P |
Z940 |
Y-40R |
Z940 |
W-40P |
Z940 |
W-40R |
Z940 |
Y-40I |
| |
Z941Y |
Z941 |
Z941 |
Z941 |
Z941 |
Z941 |
|
| 40 |
200 |
145 |
110 |
85 |
76 |
18 |
4-18 |
3 |
4 |
617 |
DZW15 |
46 |
| 50 |
250 |
160 |
125 |
100 |
88 |
20 |
4-18 |
3 |
4 |
665 |
DZW20 |
58 |
| 65 |
280 |
180 |
145 |
120 |
110 |
22 |
8-18 |
3 |
4 |
680 |
DZW20 |
68 |
| 80 |
310 |
195 |
160 |
135 |
121 |
22 |
8-18 |
3 |
4 |
752 |
DZW20 |
80 |
| 100 |
350 |
230 |
190 |
160 |
150 |
24 |
8-23 |
3 |
4.5 |
846 |
DZW30 |
108 |
| 150 |
450 |
300 |
250 |
218 |
204 |
30 |
8-25 |
3 |
4.5 |
1087 |
DZW45 |
258 |
| 200 |
550 |
375 |
320 |
282 |
260 |
38 |
12-30 |
3 |
4.5 |
1243 |
DZW45 |
366 |
| 250 |
650 |
445 |
385 |
345 |
313 |
42 |
12-34 |
3 |
4.5 |
1429 |
DZW60 |
472 |
| 300 |
750 |
510 |
450 |
408 |
364 |
46 |
16-34 |
4 |
4.5 |
1608 |
DZW90 |
673 |
| 350 |
850 |
570 |
510 |
465 |
422 |
52 |
16-34 |
4 |
5 |
1738 |
DZW90 |
804 |
| 400 |
950 |
655 |
585 |
535 |
474 |
58 |
16-41 |
4 |
5 |
1897 |
DZW120 |
1081 |
| 450 |
1050 |
680 |
610 |
560 |
524 |
60 |
20-41 |
4 |
5 |
2104 |
DZW180 |
1259 |
| 500 |
1150 |
755 |
670 |
612 |
576 |
62 |
20-48 |
4 |
5 |
2401 |
DZW180 |
1348 |
主要尺寸及重量
公稱通徑
|
主要外形尺寸和連接尺寸(mm) |
電動裝置
|
重量(kg)
|
| L |
D |
D1 |
D2 |
D6 |
b |
z-d |
f |
f2 |
H |
| |
Z940H |
-64 |
Z940 |
Y-64P |
Z940 |
Y-64R |
Z940 |
W-64P |
Z940 |
W-64R |
Z940 |
Y-64I |
| |
Z941Y |
Z941 |
Z941 |
Z941 |
Z941 |
Z941 |
|
| 50 |
250 |
175 |
135 |
105 |
88 |
26 |
4-23 |
3 |
4 |
667 |
DZW20 |
68 |
| 65 |
280 |
200 |
160 |
130 |
110 |
28 |
8-23 |
3 |
4 |
685 |
DZW20 |
72 |
| 80 |
310 |
210 |
170 |
140 |
121 |
30 |
8-23 |
3 |
4 |
748 |
DZW30 |
88 |
| 100 |
350 |
250 |
200 |
168 |
150 |
32 |
8-25 |
3 |
4.5 |
845 |
DZW30 |
117 |
| 150 |
450 |
340 |
280 |
240 |
204 |
88 |
8-34 |
3 |
4.5 |
1009 |
DZW45 |
314 |
| 200 |
550 |
405 |
345 |
300 |
260 |
44 |
12-34 |
3 |
4.5 |
1253 |
DZW60 |
432 |
| 250 |
650 |
470 |
400 |
345 |
313 |
48 |
12-41 |
3 |
4.5 |
1449 |
DZW60 |
595 |
| 300 |
750 |
530 |
460 |
412 |
361 |
54 |
16-41 |
4 |
4.5 |
1867 |
DZW90 |
721 |
| 350 |
850 |
595 |
525 |
475 |
422 |
60 |
16-41 |
4 |
5 |
1931 |
DZW120 |
863 |
| 400 |
950 |
670 |
585 |
525 |
474 |
66 |
16-48 |
4 |
5 |
2017 |
DZW180 |
1129 |
| 500 |
1150 |
800 |
705 |
640 |
576 |
70 |
20-54 |
4 |
5 |
2459 |
DZW 250 |
1493 |
| |
Z940H |
-100 |
Z940 |
Y-100P |
Z940 |
Y-100R |
Z940 |
W-100P |
Z940 |
W-100R |
Z940 |
Y-100I |
| |
Z941Y |
Z941 |
Z941 |
Z941 |
Z941 |
Z941 |
|
| 50 |
250 |
195 |
145 |
112 |
88 |
28 |
4-25 |
3 |
4 |
781 |
DZW20 |
78 |
| 65 |
280 |
220 |
170 |
138 |
110 |
32 |
8-25 |
3 |
4 |
830 |
DZW20 |
96 |
| 80 |
310 |
230 |
180 |
148 |
121 |
34 |
8-25 |
3 |
4 |
865 |
DZW30 |
126 |
| 100 |
350 |
265 |
210 |
172 |
150 |
38 |
8-30 |
3 |
4.5 |
1179 |
DZW30 |
134 |
| 150 |
450 |
350 |
290 |
250 |
204 |
46 |
12-34 |
3 |
4.5 |
1201 |
DZW60 |
352 |
| 200 |
550 |
430 |
360 |
312 |
260 |
54 |
12-41 |
3 |
4.5 |
1611 |
DZW60 |
484 |
| 250 |
650 |
500 |
430 |
382 |
313 |
60 |
12-41 |
3 |
4.5 |
1903 |
DZW90 |
608 |
| 300 |
750 |
585 |
500 |
442 |
364 |
70 |
16-48 |
4 |
4.5 |
2054 |
DZW120 |
757 |
| 350 |
850 |
655 |
560 |
498 |
422 |
76 |
16-54 |
4 |
5 |
2132 |
DZW180 |
994 |
| 400 |
950 |
715 |
620 |
558 |
474 |
80 |
16-54 |
4 |
5 |
2321 |
DZW 250 |
1269 |
| |
Z940H |
-160 |
Z940 |
Y-160P |
Z940 |
Y-160R |
Z940 |
W-160P |
Z940 |
W-160R |
Z940 |
Y-160I |
| |
Z941Y |
Z941 |
Z941 |
Z941 |
Z941 |
Z941 |
|
| 50 |
300 |
215 |
165 |
132 |
88 |
36 |
8-25 |
3 |
4 |
905 |
DZW20 |
101 |
| 65 |
340 |
245 |
190 |
152 |
110 |
44 |
8-30 |
3 |
4 |
968 |
DZW20 |
137 |
| 80 |
390 |
260 |
205 |
168 |
121 |
46 |
8-30 |
3 |
4 |
978 |
DZW30 |
167 |
| 100 |
450 |
300 |
240 |
200 |
150 |
48 |
8-34 |
3 |
4.5 |
1043 |
DZW30 |
211 |
| 125 |
525 |
355 |
285 |
238 |
176 |
60 |
8-41 |
3 |
4.5 |
1248 |
DZW60 |
424 |
| 150 |
600 |
390 |
318 |
270 |
204 |
66 |
12-41 |
3 |
4.5 |
1394 |
DZW90 |
588 |
| 200 |
750 |
480 |
400 |
345 |
250 |
78 |
12-48 |
3 |
4.5 |
1621 |
DZW120 |
839 |
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