Characteristics:
With metal and graphite double-layered seal, the disc and seal perform excellent sealing property in any circumstance of different temperature and pressure. The triple eccentric structure provides almost no friction between seat and disc, so zero leakage can be granted.The vacuum designation makes the valve can be used widely in petro, chemical, metallurgical and machinery industries. Also the valve is capable in system with flammable and explosive medium because of its antistatic design.
Main Performance Parameter:
|
Nominal Diameter ( inch )
|
Nominal Pressure (Lb)
|
Test Pressure
|
Suitable Medium
|
Suitable Temperature
|
|
Strength Test
|
Seal Test
|
|
3''~120''
|
150
|
225
|
165
|
water, steam, oil, acid, alkali, salt etc
|
-29℃~425℃
|
|
300（≤48''）
|
450
|
330
|
Material of Main Patrs:
|
Name
|
Material
|
|
Body
|
WCB、 304、 316、 CF8M
|
|
Disc
|
WCB、 304、 316、316SS、 CF8M
|
|
Stem
|
420、316SS、316L、304
|
|
Seal Ring
|
304、316、Flexible graphite
|
|
Packing
|
Flexible graphite、PTFE
|
|
Drivng Type
|
Manual、Worm wheel actuator、Electric、Pneumatic、Hydraulic
|
Dimension Table of Installation:
| D643H-16/25C.R.V |
|
Nominal Diameter
|
Face to Face Dimension
|
Outline Dimension
|
Connection Dimension
|
|
mm
|
inch
|
mm
|
inch
|
short
|
long
|
H2
|
A2
|
B2
|
D
|
D1
|
Z-d
|
D
|
D1
|
|
50
|
2
|
108
|
150
|
112
|
350
|
180
|
200
|
165
|
125
|
4-18
|
165
|
125
|
4-18
|
|
65
|
2-1/2
|
112
|
170
|
115
|
370
|
180
|
200
|
185
|
145
|
4-18
|
185
|
145
|
8-18
|
|
80
|
3
|
114
|
180
|
120
|
380
|
180
|
200
|
200
|
160
|
8-18
|
200
|
160
|
8-18
|
|
100
|
4
|
127
|
190
|
138
|
420
|
180
|
200
|
220
|
180
|
8-18
|
235
|
190
|
8-22
|
|
125
|
5
|
140
|
200
|
164
|
460
|
180
|
200
|
250
|
210
|
8-18
|
270
|
220
|
8-26
|
|
150
|
6
|
140
|
210
|
175
|
555
|
270
|
280
|
285
|
240
|
8-22
|
300
|
250
|
8-26
|
|
200
|
8
|
152
|
230
|
200
|
760
|
400
|
425
|
340
|
295
|
12-22
|
360
|
310
|
12-26
|
|
250
|
10
|
165
|
250
|
243
|
830
|
400
|
425
|
405
|
355
|
12-26
|
425
|
370
|
12-30
|
|
300
|
12
|
178
|
270
|
250
|
895
|
450
|
560
|
460
|
410
|
12-26
|
485
|
430
|
16-30
|
|
350
|
14
|
190
|
290
|
280
|
950
|
450
|
560
|
520
|
470
|
16-26
|
555
|
490
|
16-33
|
|
400
|
16
|
216
|
310
|
305
|
1190
|
535
|
580
|
580
|
525
|
16-30
|
620
|
550
|
16-36
|
|
450
|
18
|
222
|
330
|
350
|
1255
|
535
|
580
|
640
|
585
|
20-30
|
670
|
600
|
20-36
|
|
500
|
20
|
229
|
350
|
380
|
1305
|
535
|
580
|
715
|
650
|
20-33
|
730
|
660
|
20-36
|
|
600
|
24
|
267
|
390
|
445
|
1340
|
570
|
660
|
840
|
770
|
20-36
|
845
|
770
|
20-39
|
|
700
|
28
|
292
|
430
|
480
|
1520
|
750
|
550
|
910
|
840
|
24-36
|
960
|
875
|
24-42
|
|
800
|
32
|
318
|
470
|
530
|
1710
|
750
|
550
|
1025
|
950
|
24-39
|
1085
|
990
|
24-48
|
|
900
|
36
|
330
|
510
|
580
|
1810
|
750
|
550
|
1125
|
1050
|
28-39
|
1185
|
1090
|
28-48
|
|
1000
|
40
|
410
|
550
|
650
|
1960
|
900
|
750
|
1255
|
1170
|
28-42
|
1320
|
1210
|
28-56
|
|
1200
|
48
|
470
|
630
|
760
|
2250
|
1000
|
925
|
1485
|
1390
|
32-48
|
1530
|
1420
|
32-56
|
|
1400
|
56
|
530
|
710
|
850
|
2435
|
1000
|
925
|
1685
|
1590
|
36-48
|
1755
|
1640
|
36-62
|
|
1600
|
64
|
600
|
790
|
1030
|
2780
|
1000
|
925
|
1930
|
1820
|
40-56
|
1975
|
18460
|
40-62
|
|
1800
|
72
|
670
|
870
|
1230
|
3020
|
1100
|
980
|
2130
|
2020
|
44-56
|
2195
|
2070
|
44-70
|
|
2000
|
80
|
760
|
950
|
1350
|
3270
|
1100
|
980
|
2345
|
2230
|
48-62
|
2425
|
2300
|
48-70
|
| D643H-40C.P.R.V |
|
Nominal Diameter
|
Face to Face Dimension
|
Outline Dimension
|
Connection Dimension
|
|
H
|
D343H
|
PN4.0MPa
|
|
mm
|
inch
|
L
|
H2
|
A2
|
B2
|
D
|
D1
|
Z-d
|
|
50
|
2
|
108
|
112
|
350
|
180
|
200
|
165
|
125
|
4-18
|
|
65
|
2-1/2
|
112
|
115
|
370
|
270
|
280
|
185
|
145
|
8-18
|
|
80
|
3
|
114
|
120
|
380
|
270
|
280
|
200
|
160
|
8-18
|
|
100
|
4
|
127
|
138
|
420
|
270
|
280
|
235
|
190
|
8-22
|
|
125
|
5
|
140
|
164
|
460
|
380
|
420
|
270
|
220
|
8-26
|
|
150
|
6
|
140
|
175
|
555
|
380
|
420
|
300
|
250
|
8-26
|
|
200
|
8
|
152
|
200
|
760
|
400
|
425
|
375
|
320
|
12-30
|
|
250
|
10
|
165
|
243
|
830
|
400
|
425
|
450
|
385
|
12-33
|
|
300
|
12
|
178
|
250
|
895
|
450
|
560
|
515
|
450
|
16-33
|
|
350
|
14
|
190
|
280
|
950
|
450
|
560
|
580
|
510
|
16-36
|
|
400
|
16
|
216
|
305
|
1190
|
535
|
580
|
660
|
585
|
16-39
|
|
450
|
18
|
222
|
350
|
1255
|
535
|
580
|
685
|
610
|
20-39
|
|
500
|
20
|
229
|
380
|
1305
|
535
|
580
|
755
|
670
|
20-42
|
