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Flat gate valve
Catalogue:
Cast steel gate,globe,check valves.pdf
Introduction for flat gate valve
The flat-plate gate valve is a slide valve with its closure member as a parallel wedge disc and the apparatus on the mouth of the petroleum and natural gas extracting well is just the said valve,with its closure member to be either a single wedge disc or a double one with an unfurling mechanism therein.
The pressing force of the wedge disc towards the seat ring is controlled by the medium pressure acting on the floating wedge disc or seat ring,The said valve features a small flow resistance,similar to that of a short straight pipe and without necking,The flat-plate gate valve with diversion holes is mounted on a pipeline and can
do pipe cleaning directly with a pipe cleaner.As the wedge disc slides on the surfaces of the two seat rings,so the flat-plate is also applicable for the medium with suspended grains,The sealing face of the said valve is positioned automatically in fact and will not get damaged along with the hot deformation of the body and overloaded along with
the hot extension of the stem when the valve is closed in cold state,The flat-plate gate valve without diversion holes
will not ask the closed position of the wedge disc for a higher precision when the valve is closed.
Material specifications~~~~~~~~~ER410 and 18-8SS orht(co-cra)
|
NO.
|
Part Name
|
Material
|
||||||||
|
WCB
|
LCB
|
WC6
|
WC9
|
C5
|
CF8
|
CF8M
|
CF3
|
CF3M
|
||
|
1
|
Body
|
A216 WCB
|
A352 LCB
|
A217 WC6
|
A217 WC9
|
A217 C5
|
A351 CF8
|
A351 CF8M
|
A351 CF3
|
A351 CF3M
|
|
2
|
Seat
|
A105
|
A350 LF2
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F316
|
A182 F304L
|
A182 F316L
|
|
3
|
Pluice Plate
|
A216 WCB
|
A325 LCB
|
A217 WC6
|
A217 WC9
|
A217 C5
|
A351 CF8
|
A351 CF8M
|
A351 CF3
|
A351 CF3M
|
|
4
|
O-Ring
|
NBR/FEP
|
||||||||
|
5
|
Gage Block
|
A193 B7
|
A320 L7
|
A193 B16
|
A320 B8
|
|||||
|
6
|
Stem
|
A182 F6a
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F316
|
A182 F304L
|
A182 F316L
|
|
7
|
Gasket
|
Flexible Graphite
|
||||||||
|
8
|
Bolt
|
A193 B7
|
A320 L7
|
A193 B16
|
A193 B8
|
A194 B8M
|
||||
|
9
|
Nut
|
A194 2H
|
A194 L7
|
A194 4
|
A194 8
|
A194 8M
|
||||
|
10
|
Bonnet
|
A216 WCB
|
A325 LCB
|
A217 WC6
|
A217 WC9
|
A217 C5
|
A351 CF8
|
A351 CF8M
|
A351 CF3
|
A351 CF3M
|
|
11
|
Backseat Bushing
|
A182 F6a
|
A182 F6
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F304
|
A182 F316
|
A182 F304L
|
A182 F316L
|
|
12
|
Clib Talker
|
Copper or Carbon steel or Stainless Steel
|
||||||||
|
13
|
Separate Link
|
ASTM A182 F410
|
||||||||
|
14
|
Packing
|
Graphite+ASBESTOS
|
||||||||
|
15
|
Yoke
|
A216 WCB
|
A325 LCB
|
A217 WC6
|
A217 WC9
|
A217 C5
|
A351 CF8
|
A351 CF8M
|
A351 CF3
|
A351 CF3M
|
|
16
|
Stem nut
|
A439 D-2~~Cu-Alloy
|
||||||||
|
17
|
Oil Cup
|
Copper or Carbon steel or Stainless Steel
|
||||||||
|
18
|
Retaining Nut
|
Carbon Steel or Alloy Steel
|
||||||||
|
19
|
Handwheel
|
A216 WCB
|
||||||||
|
20
|
Protector
|
A105N
|
||||||||
|
21
|
Indicator
|
ASTM A182 F410
|
||||||||
|
Seating face overlay
|
ER410/ER316/STL
|
|||||||||
The materials according to ASTM standard
PLATE GATE VALVE
|
Size
|
in
|
2
|
3
|
4
|
6
|
8
|
10
|
12
|
14
|
16
|
18
|
20
|
24
|
28
|
30
|
36
|
40
|
|
mm
|
50
|
80
|
100
|
150
|
200
|
250
|
300
|
350
|
400
|
450
|
500
|
600
|
700
|
750
|
900
|
1000
|
|
|
150Lb (20Kg/c?O)
|
L
|
7
|
8
|
9
|
10-1/2
|
11-1/2
|
13
|
14
|
15
|
16
|
17
|
18
|
20
|
24
|
26
|
32
|
38
|
|
d
|
2
|
3
|
4
|
6
|
8
|
10
|
12
|
13-1/4
|
15-1/4
|
17-1/4
|
19-1/4
|
23-1/4
|
27
|
29
|
34-1/2
|
38-1/2
|
|
|
H
|
23
|
26-3/4
|
34
|
45-3/8
|
52-3/8
|
59-1/2
|
68-5/8
|
76
|
82-7/8
|
90
|
98-1/4
|
113
|
127-1/4
|
136-1/4
|
157
|
172
|
|
|
H1
|
6
|
8
|
10
|
13-1/2
|
16-1/2
|
19-1/2
|
22-3/4
|
25-1/4
|
28-3/8
|
31-3/8
|
34-1/2
|
41-1/8
|
46-7/8
|
50
|
59
|
65-11/16
|
|
|
D0
|
10
|
10
|
10
|
14
|
14
|
16
|
18
|
20
|
24
|
24
|
24
|
24
|
24
|
24
|
36
|
36
|
|
|
Size
|
in
|
2
|
3
|
4
|
6
|
8
|
10
|
12
|
14
|
16
|
18
|
20
|
24
|
28
|
30
|
36
|
|
mm
|
50
|
80
|
100
|
150
|
200
|
250
|
300
|
350
|
400
|
450
|
500
|
600
|
700
|
750
|
900
|
|
|
300Lb (50Kg/c?O) |
L
|
8-1/2
|
11-1/8
|
12
|
15-7/8
|
16-1/2
|
18
|
19-3/4
|
30
|
33
|
36
|
39
|
45
|
53
|
55
|
68
|
|
d
|
2
|
3
|
4
|
6
|
8
|
10
|
12
|
13-1/4
|
15-1/4
|
17-1/4
|
19-1/4
|
23-1/4
|
27
|
29
|
34-1/2
|
|
|
H
|
23
|
26-3/4
|
34
|
45-3/8
|
52-3/8
|
59-1/2
|
68-5/8
|
75-5/8
|
80-5/8
|
88
|
97-3/4
|
114-1/8
|
129-1/8
|
139-1/8
|
161
|
|
|
H1
|
6
|
8
|
10
|
13-1/2
|
16-1/2
|
19-1/2
|
22-3/4
|
25-1/4
|
28-1/8
|
31
|
34-1/2
|
41-1/8
|
47
|
50-5/8
|
59-1/4
|
|
|
D0
|
10
|
10
|
10
|
14
|
14
|
16
|
18
|
20
|
24
|
24
|
24
|
24
|
24
|
36
|
36
|
|
|
Size
|
in
|
2
|
3
|
4
|
6
|
8
|
10
|
12
|
14
|
16
|
18
|
20
|
24
|
28
|
30
|
|
mm
|
50
|
80
|
100
|
150
|
200
|
250
|
300
|
350
|
400
|
450
|
500
|
600
|
700
|
750
|
|
|
400Lb (64Kg/c?O)
|
L
|
11-1/2
|
14
|
17
|
19-1/2
|
23-1/2
|
26-1/2
|
30
|
32-1/2
|
35-1/2
|
38-1/2
|
41-1/2
|
48-1/2
|
55
|
60
|
|
d
|
2
|
3
|
4
|
6
|
8
|
10
|
12
|
13-1/4
|
15-1/4
|
17-1/4
|
19-1/4
|
23-1/4
|
27
|
29
|
|
|
H
|
23-1/4
|
27
|
34-1/4
|
46-3/8
|
56-3/8
|
59-1/2
|
68-7/8
|
75-3/8
|
81
|
89-1/4
|
98-1/8
|
115-1/2
|
130
|
141
|
|
|
H1
|
6
|
8
|
10
|
13-5/8
|
16-1/2
|
19-3/4
|
23
|
26
|
28-3/4
|
31-1/2
|
35
|
41-7/8
|
51-1/2
|
60
|
|
|
D0
|
10
|
10
|
10
|
14
|
14
|
16
|
18
|
20
|
24
|
24
|
24
|
24
|
36
|
36
|
|
