硬密封球閥采用單斜面彈性密封圈或V型槽彈性密封圈結(jié)構(gòu)設(shè)計(jì)，當(dāng)介質(zhì)壓力太小時(shí)，密封圈與球體的接觸面積較小，故有較大的密封比壓，確保可靠密封，介質(zhì)壓力較大時(shí)，密封圈與球體接觸面積增大，故密封圈能受較大的介質(zhì)推力而不會(huì)損壞。由于聚四乙烯等密封圈材料具有良好的自潤(rùn)滑性，與球體的摩擦損小，故球閥的使用壽命長(zhǎng)。
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主要零件
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閥體
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WCB
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ZG1Cr18Ni9Ti
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CF8(304)
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CF3(304L)
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ZG1Cr18NT
12Mo2Ti |
CF8(316)
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CF3M(316L)
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球體、閥桿
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2Cr13
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1Cr18Ni9Ti
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OCr18Ni9
(304) |
00Cr19Ni11
(304L) |
1Cr18Ni
12Mo2Ti |
0CR17Ni 12Mo2(316) |
00Cr17Ni |
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密封圈
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特種硬化材料
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填料、墊圈
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柔性石墨環(huán) 柔性石墨纏繞墊
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適用工況
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適用介質(zhì)
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高溫的或含有顆粒等介質(zhì)
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適用溫度
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應(yīng)用規(guī)范
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設(shè)計(jì)制造按
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法蘭遲寸按
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結(jié)構(gòu)長(zhǎng)度按
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檢驗(yàn)試驗(yàn)按
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Q41硬(軟)密封球閥主要連接尺寸(JB規(guī)格)
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型號(hào) |
公稱通徑 Dn (mm) |
尺 寸 (mm) |
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L |
D |
Dl |
D2 |
B-f |
Z-φd |
H |
DO |
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Q41H-16P |
15 |
130 |
96 |
86 |
46 |
14-2 |
4-14 |
60 |
108 |
|
20 |
140 |
105 |
75 |
65 |
14-2 |
4-14 |
64 |
120 |
|
|
25 |
150 |
165 |
85 |
65 |
16-2 |
4-14 |
90 |
165 |
|
|
32 |
165 |
135 |
100 |
78 |
16-2 |
4-18 |
105 |
180 |
|
|
40 |
180 |
146 |
110 |
85 |
18-3 |
4-18 |
150 |
24O |
|
|
50 |
200 |
160 |
126 |
100 |
18-3 |
4-18 |
190 |
240 |
|
|
65 |
220 |
180 |
145 |
120 |
18-3 |
4-18 |
195 |
320 |
|
|
80 |
260 |
195 |
160 |
135 |
20-3 |
8-18 |
216 |
360 |
|
|
100 |
280 |
216 |
180 |
165 |
20-3 |
8-18 |
260 |
400 |
|
|
125 |
320 |
246 |
210 |
186 |
22-3 |
8-18 |
280 |
500 |
|
|
150 |
360 |
280 |
2lO |
210 |
2l-3 |
8-23 |
320 |
600 |
|
|
200 |
400 |
335 |
295 |
265 |
26-3 |
12-23 |
370 |
800 |
|
|
250 |
450 |
406 |
355 |
320 |
3O-33 |
12-25 |
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型號(hào) |
公稱通徑 Dn (mm) |
尺 寸 (mm) |
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L |
D |
Dl |
D2 |
B-f |
Z-φd |
H |
Do |
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Q41H-25P |
15 |
130 |
95 |
65 |
45 |
14-2 |
4-14 |
60 |
108 |
|
20 |
14O |
105 |
75 |
55 |
14-2 |
4-14 |
64 |
120 |
|
|
25 |
150 |
115 |
85 |
B5 |
16-2 |
l-14 |
90 |
165 |
|
|
32 |
165 |
136 |
100 |
78 |
16-2 |
4-18 |
106 |
180 |
|
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4O |
180 |
146 |
110 |
85 |
18-3 |
4-18 |
160 |
24O |
|
|
50 |
200 |
160 |
126 |
100 |
20-3 |
4-18 |
205 |
270 |
|
|
65 |
220 |
180 |
145 |
120 |
22-3 |
8-18 |
215 |
360 |
|
|
80 |
260 |
195 |
160 |
136 |
22-3 |
8-18 |
230 |
4OO |
|
|
100 |
280 |
230 |
190 |
165 |
24-3 |
8-23 |
270 |
500 |
|
|
125 |
S20 |
270 |
220 |
188 |
28-3 |
8-26 |
300 |
600 |
|
|
150 |
360 |
300 |
260 |
218 |
30-3 |
8-26 |
340 |
900 |
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|
200 |
400 |
360 |
310 |
278 |
34-3 |
12-26 |
4OO |
1100 |
|
|
260 |
457 |
425 |
370 |
332 |
36-3 |
12-30 |
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| 型號(hào) | 公稱通徑 Dn (mm) | 尺 寸 (mm) | |||||||
| L | D | D1 | D2 | B-f | B-f | Z-φd | H | ||
| Q41H-40P | 15 | 130 | 96 | 66 | 46 | ||||