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产品名称:
美国 BRAY 博雷20/21 316不锈钢 系列
产品型号:
SERIES 20/21
产品展商:
上海宏钲机械设备有限公司
简单介绍
SERIES 20/21316 Stainless Steel ValveFood, Beverage & Chemical IndustriesWafer/Lug 1"-12" (25mm - 300mm)
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美国 BRAY 博雷20/21 316不锈钢 系列
的详细介绍 |
High
Performance
Company
Bray Controls offers a new line of
butterfly valves with two-piece
316
Stainless Steel bodies in wafer style and
lug style.
This special line of valves has the
specific advantage of a high integrity
corrosion resistant exterior for use in
aggressive environments.
DISC/STEM
An important feature is the
one-piece design.
This design provides
outstanding protection from the particle
entrapment and bacterial growth.
The
thin disc profile allows a high flow
capacity
(Cv rating,
up to
50%
greater
than most through-stem designs)
and
greater pressure recovery thus resulting
in lower pressure drops and a more
energy efficient valve.
Disc/stems are
offered as investment cast
316
Stainless
Steel or fabricated
316
Stainless Steel.
FLANGE LOCATING HOLES
Provide quick and proper alignment
during installation,
thus allowing the
installer to center the valve in the
pipeline between the flanges.
holds securely between either slip-on or
weld-neck flanges and also allows simple
and fast field replacement.
This resilient
seat features lower torque than many
valves on the market today and provides
complete isolation of flowing media from
the body.
PRIMARY AND SECONDARY
SEALS
The Primary Seal is achieved by
an interference fit of the molded seat flat
with the disc hub.
The Secondary Seal is
an interference fit as a result of the stem
diamter.
These seals prevent line media
from coming in contact with the stem or
body.
ACTUATOR MOUNTING FLANGE
AND STEM CONNECTION
Designed for direct mounting of Bray
power actuators and manual operators.
This design meets ISO
5211.
Extended
neck allows easy access without
interference with pipe flanges.
No
brackets or adapters are required.
the Bray valve product line is
international compatibility.
These valves are compatible
with most world flange
125/150,
BS
10
Table D and E,
BS
4504
NP10/16,
DIN ND
10/16,
AS
2129
and JIS
10.
In
addition,
the valves are
designed to be able to comply
with ISO
5752
face to face.
Therefore,
one valve design
can be used in many different
20
valve is a wafer version
with flange locating holes,
and the
Series
21
is the companion lug version
for dead-end service and other flange
requirements.
All Bray valves are tested
to
110%
of full pressure rating before
shipment.
STEM BUSHING
is a non-corrosive,
heavy duty acetal bushing which
absorbs actuator side thrusts.
STEM SEAL
design is self-adjusting and gives
positive sealing in both directions.
BODY BOLTS
Standard material is
316
Stainless Steel.
VELOCITY LIMITS
For On/Off Services:
Valve Size
Mtg Flange Drilling
Lug Bolting Data
ins
mm
A
B
C
D
E
F
BC
No.
Holes
Hole
Dia.
G
H
J
K
BC
No.
Holes
Thrds
UNC-
2B
1
25
2.36
1.18
1.25
1.73
3.54
2.56
1.97
4
.28
.39
.32
1.00
.44
-
-
-
1
1/2
40
3.15
1.26
1.84
2.53
4.12
2.56
1.97
4
.28
.39
.32
1.00
1.35
-
-
-
2
50
3.69
1.62
2.00
2.84
5.50
3.54
2.76
4
.39
.55
.39
1.25
1.32
4.75
4
5/8-11
2
1/2
65
4.19
1.75
2.50
3.34
6.00
3.54
2.76
4
.39
.55
.39
1.25
1.91
5.50
4
5/8-11
3
80
4.88
1.75
3.00
4.03
6.25
3.54
2.76
4
.39
.55
.39
1.25
2.55
6.00
4
5/8-11
4
100
6.06
2.00
4.00
5.16
7.00
3.54
2.76
4
.39
.63
.43
1.25
3.57
7.50
8
5/8-11
5
125
7.12
2.12
5.00
6.16
7.50
3.54
2.76
4
.39
.75
.51
1.25
4.63
8.50
8
3/4-10
6
150
8.12
2.12
5.75
7.02
8.00
3.54
2.76
4
.39
.75
.51
1.25
5.45
9.50
8
3/4-10
8
200
10.50
2.50
7.75
9.47
9.50
5.91
4.92
4
.57
.87
.63
1.25
7.45
11.75
8
3/4-10
10
250
12.75
2.50
9.75
11.47
10.75
5.91
4.92
4
.57
1.18
.87
2.00
9.53
14.25
12
7/8-9
12
300
14.88
3.00
11.75
13.47
12.25
5.91
4.92
4
.57
1.18
.87
2.00
11.47
17.00
12
7/8-9
DIMENSIONS
SERIES
20
Wafer
SERIES
21
Lug
Valve-Size
ins
mm
1
25
61
56
36
21
11
5.6
2.7
.97
.07
1 1/2
40
147
129
87
50
26
12.8
5.9
1.7
.25
2
50
244
172
123
73
45
27
16
7
.89
2 1/2
65
439
310
201
115
71
43
25
11
1.4
3
80
691
488
290
165
102
62
35
16
2.01
4
100
1282
906
515
294
182
110
63
28
3.57
5
125
2070
1416
805
459
284
172
98
44
6
6
150
2786
1873
1065
607
376
227
130
59
7
8
200
5191
3402
1935
1147
714
427
244
106
13
10
250
8238
5385
3062
1815
1130
675
387
168
21
12
300
12102
7820
4448
2636
1642
981
562
245
31
Disc Position
(Degrees)
Cv VALUES-VALVE SIZING COEFFICIENT
TYPE
Max.
Min
EPDM
Buna-N
FKM*
PTFE-
Lined
EPDM
TEMPERATURE
RANGE OF SEATS
PRESSURE RATINGS
When valve is placed between flanges for
b-directional bubble-tight shut off,
disc in
closed position:
Disc/Stems for Resilient Seated Valves
EPDM and Buna-N molded:
Disc/Stems for PTFE Seated Valves
PTFE molded:
For Dead-end Service Applications:
With
downstream flanges installed,
the
dead-end pressure ratings are equal to
valves bi-directional ratings as stated
above.
With no downstream flanges,
the
valves is
75
psi
(5
bar).
MATERIALS SELECTION
Body:
316
Stainless Steel per ASTM A351
Type CF8M
Seat:
PTFE-Molded EPDM
EPDM-Food Grade
DISC/STEM
316
Stainless Steel per ASTM A351
Type CF8M
EPDM molded over
17-4
Stainless Steel per ASTM
A747
Type CB7Cu-1
Heat Treated
Buna-N molded over
17-4
ph Stainless Steel per
ASTM A747
Type CB7Cu-1
Heat Treated
PTFE molded over
17-4
ph Stainless Steel per
ASTM A747
Type CB7Cu-1
Heat Treated
ASTM A747
Type CB7Cu-1
Heat Treated
FKM*
Buna-N Food
Grade
*FKM is the ASTM D1418
designation for Fluorinated Hydrocarbon
Elastomers
(also called Fluoroelastomers).
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