真空焊接截止��(chǎn)品特�(diǎn)�
1、真空截止閥主體采用鑄鍛�(jié)�(gòu)，具有平行雙密封副半�(qiáng)制雙向密封，密封面到位運(yùn)�(dòng)和楔形塊楔緊�(yùn)�(dòng)分步作用�(shí)�(xiàn)零泄��
2、密封面�(yùn)�(dòng)磨擦力小、啟閉輕�，而且密封面磨損有自動(dòng)�(bǔ)償功��
3、結(jié)�(gòu)�(jiǎn)�、緊�、檢修方�，使用壽命長(zhǎng)�
4、閥蓋填料室�(shè)有真空密封結(jié)�(gòu)，具有自脹壓緊作�，并且密封采用高�(qiáng)膨脹材料密封，使系統(tǒng)與大氣完全隔�，具有很好的系統(tǒng)氣密��
5、本系列閥門連接形式分法�、焊接兩�，驅(qū)�(dòng)方式有手�(dòng)、電�(dòng)兩種�
該閥門適用于工作溫�≤425℃和≤550�，工作介�(zhì)為水、蒸汽或空氣的管路上，作為啟閉裝置；尤其適用于火電廠汽機(jī)冷凝和真空負(fù)壓系�(tǒng)，起真空隔離密封作用�
真空焊接截止��(chǎn)品主要零件材料：
|
零件名稱
Part name
|
閥體、閥� Body Bonnet
|
閥桿
Valve Stem
|
閥瓣 Disc
|
密封�
Sealing face
|
閥桿螺母
Yokenut
|
填料
Packing
|
緊固�
Fasteher
|
|
NKJ61H-C�
|
25或WCB
|
鉻不銹鋼
Crstain
mless
teel
|
鉻不銹鋼
Crstain
mless
steel
|
H：合金鋼
H：alloy steel
|
鋁青�
AI
bronze
|
膨脹�(fù)合石�
Expanding
compound
graphlte
|
�(yōu)�(zhì)碳鋼
High-grade
carbon
steel
|
|
NKJ61Y-l�
|
鉻鉬�
Cr.Mo steel
|
20CrlM01vA �38CrMoAlA
|
12CrlMo 1VA
|
Y：硬�(zhì)合金
Y:oarbide alloy
|
鉻鉬�
Cr.Mo steel
|
真空焊接截止��(chǎn)品主要連接尺寸�
|
公稱通徑
DN/mm
Nominal
diameter
|
公稱壓力
PN/MPa
Nominal
pressure
|
主要外形尺寸和連接尺寸/mm
Main extemal and connectingd mensions
|
|
L
|
H
|
D
|
D0
|
D1
|
L1
|
α
|
W
|
|
1O
|
4.0
|
130
|
245
|
36
|
11
|
18.4
|
1O
|
-
|
120
|
|
15
|
130
|
245
|
36
|
16
|
22.5
|
1O
|
-
|
120
|
|
20
|
150
|
265
|
44
|
21
|
28.5
|
11
|
-
|
160
|
|
25
|
160
|
270
|
48
|
26
|
34.5
|
12
|
-
|
200
|
|
32
|
180
|
285
|
48
|
34
|
-
|
-
|
37o30'
|
200
|
|
40
|
200
|
320
|
55
|
40
|
-
|
-
|
37o30'
|
240
|
|
50
|
230
|
365
|
64
|
48
|
-
|
-
|
37o30'
|
320
|
|
65
|
290
|
41O
|
82
|
66
|
-
|
-
|
37o30'
|
300
|
|
80
|
31O
|
430
|
95
|
78
|
-
|
-
|
37o30'
|
300
|
|
100
|
350
|
470
|
117
|
1OO
|
-
|
-
|
37o30'
|
350
|
|
125
|
400
|
500
|
143
|
126
|
-
|
-
|
37o30'
|
350
|
|
150
|
480
|
533
|
167
|
150
|
-
|
-
|
37o30'
|
400
|
|
1O
|
6.4
|
130
|
245
|
36
|
1O
|
18.4
|
1O
|
-
|
120
|
|
15
|
130
|
245
|
36
|
15
|
22.5
|
1O
|
-
|
120
|
|
20
|
150
|
265
|
44
|
20
|
28.5
|
11
|
-
|
160
|
|
25
|
160
|
270
|
48
|
25
|
34.5
|
12
|
-
|
200
|
|
32
|
180
|
280
|
48
|
33
|
-
|
-
|
37o30'
|
200
|
|
40
|
200
|
320
|
55
|
39
|
-
|
-
|
37o30'
|
240
|
|
50
|
230
|
365
|
64
|
48
|
-
|
-
|
37o30'
|
320
|
|
65
|
290
|
41O
|
82
|
65
|
-
|
-
|
37o30'
|
320
|
|
80
|
31O
|
430
|
95
|
76
|
-
|
-
|
37o30'
|
360
|
|
100
|
350
|
470
|
117
|
98
|
-
|
-
|
37o30'
|
400
|
|
125
|
480
|
500
|
143
|
123
|
-
|
-
|
37o30'
|
400
|
|
150
|
480
|
533
|
167
|
148
|
-
|
-
|
37o30'
|
500
|
|
1O
|
10.O
|
130
|
245
|
36
|
1O
|
18.4
|
1O
|
-
|
120
|
|
15
|
130
|
245
|
36
|
14
|
22.5
|
1O
|
-
|
120
|
|
20
|
150
|
265
|
44
|
20
|
28.5
|
11
|
-
|
160
|
|
25
|
160
|
270
|
48
|
25
|
34.5
|
12
|
-
|
200
|
|
32
|
180
|
285
|
48
|
32
|
-
|
-
|
37o30'
|
200
|
|
40
|
200
|
320
|
55
|
38
|
-
|
-
|
37o30'
|
240
|
|
50
|
230
|
355
|
64
|
48
|
-
|
-
|
37o30'
|
320
|
|
65
|
290
|
41O
|
82
|
63
|
-
|
-
|
37o30'
|
320
|
|
80
|
31O
|
430
|
95
|
74
|
-
|
-
|
37o30'
|
360
|
|
1OO
|
350
|
470
|
117
|
97
|
-
|
-
|
37o30'
|
400
|
|
125
|
400
|
500
|
143
|
123
|
-
|
-
|
37o30'
|
400
|
|
150
|
480
|
533
|
167
|
148
|
-
|
-
|
37o30'
|
500
|
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