Feature：
1. The seat adopt the structure of matching inside step and outside step to prevent the ball block or leave form the seat.
2. when the eccentric body and eccentric ball turn with the seat and stem, oriented in the same rbit, will become more closer during the closure proceeding, fully achieve the good sealing.
3. Elastic non-metal material inserted in the metal seat to protect the sealing face of the seat.
4. Semi-ball and sear make a filtering function, especially suitable for the meduim containing fiber, little grains,slurry, etc..
5. Over-flowing area is big, flow resistance factor is small, the flowing capacity is big, the meduim won’t stay in the body.
6. With precise adjusting and reliable positioning functions, flow characteristics is nearly percentage, the adjusting range is wide, and the max ration is 100:1..
Standard:
DESIGN & MANUFACTURING:API 6D & API 608
Face to Face Dimension: ANSI B 16.10
Flanged End Dimension : ANSI B 16.5
Testing & Inspection: API 598
Fire Safe Design: API 607
Structure：
|
|
|
1-Body
2-Stud
3-Nut
4-O ring
5-O ring
6-Circlet
7-Key
8-Stem
9-O ring
10-Gland
11-O ring
12-Bolt
|
13-Worm gear set
14-Bevelling spring
15-O ring
16-Seat
17-V shape ball
18-Trunnion
19-Bush
20-A djusting cushion
21-O ring
22-Down-end cap
23-Bolt
|
Main parts material
|
Body、Bonnet
|
ASTM
|
WCB
|
CF8
|
CF8M
|
WC9
|
|
Ball
|
ASTM
|
WCB
|
CF8
|
CF8M
|
WC9
|
|
Stem
|
ASTM
|
420
|
304
|
316
|
F22a
|
|
Seat
|
ASTM
|
420
|
304
|
316
|
F22a
|
|
Packing
|
ASTM
|
Soft Graphite
|
Soft Graphite
|
Soft Graphite
|
Soft Graphite
|
|
Bolt
|
ASTM
|
A193 B7
|
A320 B8
|
A193 B8M
|
F22a
|
|
Nut
|
ASTM
|
A194 2H
|
A194 8
|
A194-8M
|
A194-4
|
Main Dimensions
Dimensions
|
Nominal pressure(PN)
|
Nominal diameter(DN)
|
Size(mm)
|
|
L
|
D
|
K
|
d
|
Y
|
b
|
Z-dO
|
Ws
|
Hs
|
Hw
|
Hd
|
|
Class 150
|
2"
|
124
|
152
|
120.5
|
92
|
-
|
19
|
4-ф19
|
230
|
164
|
260
|
310
|
|
2(1/2)"
|
145
|
178
|
139.5
|
105
|
-
|
23
|
4-ф19
|
250
|
180
|
275
|
330
|
|
3"
|
165
|
190.5
|
152.5
|
127
|
-
|
24
|
4-ф19
|
300
|
200
|
300
|
360
|
|
4"
|
194
|
229
|
190.5
|
157
|
-
|
24
|
8-ф19
|
320
|
235
|
335
|
390
|
|
5"
|
210
|
254
|
216
|
186
|
-
|
24
|
8-ф22
|
400
|
260
|
335
|
405
|
|
6"
|
229
|
279
|
241.5
|
216
|
-
|
26
|
8-ф22
|
500
|
280
|
375
|
440
|
|
8"
|
243
|
343
|
298.5
|
270
|
-
|
29
|
8-ф22
|
800
|
320
|
410
|
470
|
|
10"
|
297
|
406
|
362
|
324
|
-
|
31
|
12-ф25
|
1000
|
355
|
485
|
550
|
|
12"
|
338
|
483
|
432
|
381
|
-
|
32
|
12-ф25
|
1200
|
400
|
530
|
595
|
|
14"
|
400
|
533
|
476
|
416
|
-
|
35
|
12-ф29
|
-
|
-
|
580
|
650
|
|
16"
|
400
|
597
|
540
|
470
|
-
|
37
|
16-ф29
|
-
|
-
|
650
|
730
|
|
18"
|
502
|
635
|
578
|
533
|
-
|
40
|
16-ф32
|
-
|
-
|
710
|
790
|
|
20"
|
533
|
699
|
635
|
584
|
-
|
43
|
20-ф32
|
-
|
-
|
760
|
840
|
|
24"
|
686
|
813
|
749.5
|
692
|
-
|
48
|
20-ф35
|
-
|
-
|
870
|
960
|
|
28"
|
762
|
927
|
864
|
800
|
-
|
71
|
28-ф35
|
-
|
-
|
910
|
1080
|
|
32"
|
864
|
1060
|
978
|
914
|
-
|
81
|
28-ф41
|
-
|
-
|
935
|
1125
|
|
36"
|
914
|
1168
|
1086
|
1022
|
-
|
90
|
32-ф41
|
-
|
-
|
995
|
1255
|
|
40"
|
|
1289
|
1200
|
1124
|
-
|
90
|
36-ф41
|
-
|
-
|
1080
|
1385
|
|
48"
|
|
1511
|
1422
|
1359
|
-
|
108
|
44-ф41
|
-
|
-
|
1175
|
1490
|
|
56"
|
|
1746
|
1651
|
1575
|
-
|
124
|
48-ф48
|
-
|
-
|
1280
|
1565
|
|
Class 300
|
2"
|
124
|
165
|
127
|
92
|
-
|
23
|
8-ф19
|
250
|
180
|
275
|
325
|
|
2(1/2)"
|
145
|
190.5
|
149
|
105
|
-
|
26
|
8-ф22
|
300
|
200
|
290
|
345
|
|
3"
|
165
|
210
|
168.5
|
127
|
-
|
29
|
8-ф22
|
320
|
220
|
315
|
375
|
|
4"
|
194
|
254
|
200
|
157
|
-
|
32
|
8-ф22
|
400
|
260
|
350
|
405
|
|
5"
|
210
|
279
|
235
|
186
|
-
|
35
|
8-ф22
|
500
|
290
|
370
|
420
|
|
6"
|
229
|
318
|
270
|
216
|
-
|
37
|
12-ф22
|
800
|
310
|
390
|
455
|
|
8"
|
243
|
381
|
330
|
270
|
-
|
42
|
12-ф25
|
1000
|
350
|
435
|
495
|
|
10"
|
297
|
445
|
387.5
|
324
|
-
|
48
|
16-ф29
|
1200
|
390
|
510
|
575
|
|
12"
|
338
|
521
|
451
|
381
|
-
|
51
|
16-ф32
|
-
|
-
|
555
|
620
|
|
14"
|
400
|
584
|
514.5
|
416
|
-
|
54
|
20-ф32
|
-
|
-
|
605
|
675
|
|
16"
|
400
|
648
|
571.5
|
470
|
-
|
58
|
20-ф35
|
-
|
-
|
675
|
755
|
|
18"
|
502
|
711
|
628.5
|
533
|
-
|
61
|
24-ф35
|
-
|
-
|
735
|
815
|
|
20"
|
533
|
775
|
686
|
584
|
-
|
64
|
24-ф35
|
-
|
-
|
785
|
870
|