Dwyer | Series BFV | Instruction manual | Dwyer Series BFV Instruction Manual

Dwyer Series BFV Instruction Manual
Bulletin V-6
Series BFV Butterfly Valves
Specifications - Installation and Operating Instructions
øg
n = # of holes
h
A
øD
B
ead size
WAFER STYLE
“WF”
L
C
h
WAFER STYLE
ød
4 PLCS
øE
A
M = thread size
P
øK
B
øD1
BOLT CIRCLE
LUG STYLE
135°
n = # of holes
LUG STYLE
“LT”
Series BFV Butterfly Valves are bi-directional allowing control of fluid flow and
sealing in either direction, and are designed for installation between the faces of
125#/150# ANSI flanges. They do not require gaskets; the integral seat serves as
the gasket. The wafer and lug bodies have bolt hole locations for alignment and
attachment with mating flanges.
Prior to installation, close the valve. Spread the flanges apart far enough to allow
the valve to slip easily between the flanges. Insert the valve between the flanges.
Be sure to center the valve and not damage the liner. Allow the flanges to return to
their un-spread state. Install and hand-tighten all flange bolts. Slowly open the
valve, checking for free movement of the disc. If no obstruction is encountered,
leave valve in the open position and tighten all flange bolts. Be certain to keep
flange faces as parallel as possible during and after tightening bolts or studs. After
final tightening, again check the valve for full opening and closing.
Lug style bodies used for dead end service must be installed as marked on the
body (inlet–outlet).
DIMENSIONS [in (mm)]
C
B
Size A
6-11/32 3-11/32 1-21/32
2˝
(42.07)
(161.13) (85)
2-1/2˝ 6-57/64 3-55/64 1-49/64
(44.85)
(175.02) (98)
7-9/64 4-3/32 1-25/32
3˝
(181.37) (104) (45.24)
4-27/32 2-1/16
7-7/8
4˝
(200.03) (123) (52.39)
8-25/64 5-11/32 2-5/32
5˝
(213.12) (136) (54.77)
8-29/32 5-53/64 2-13/64
6˝
(226.22) (148) (55.96)
10-1/4 7-5/16 2-25/64
8˝
(260.31) (186) (60.72)
11-1/2 8-11/32 2-19/32
10˝
(292.10) (212) (65.88)
13-9/32 9-7/8 3-1/32
12˝
(337.34) (251) (76.99)
øD
2-5/64
(52.78)
2-35/64
(64.69)
3-7/64
(78.98)
4-7/64
(104.38)
4-55/64
(123.43)
6-9/64
(155.97)
7-63/64
(202.80)
9-7/8
(250.83)
11-7/8
(301.63)
øD1
4-3/4
(120.65)
5-1/2
(139.70)
6-1/16
(153.99)
7-1/2
(190.50)
8-33/64
(216.30)
9-33/64
(241.70)
11-49/64
(298.85)
14-17/64
(362.35)
17-1/64
(432.20)
n, WF n, LT M
4
4
5/8
(15.88)
4
4
5/8
(15.88)
4
4
5/8
(15.88)
4
8
5/8
(15.88)
8
8
3/4
(19.05)
8
8
3/4
(19.05)
8
8
3/4
(19.05)
12
7/8
12
(22.23)
12
12
7/8
(22.23)
W.E. ANDERSON DIV., DWYER
INSTRUMENTS, INC.
øK
3-1/32
(76.99)
3-1/32
(76.99)
3-1/32
(76.99)
3-35/64
(90.09)
3-35/64
(90.09)
3-35/64
(90.09)
4-59/64
(125.02)
4-59/64
(125.02)
5-33/64
(140.10)
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U.S.A.
SPECIFICATIONS
VALVE BODY
Service: Compatible liquids, gases, and steam.
Line Size: 2˝ to 12˝.
Body Style: 2-way, wafer, or lug butterfly.
End Connections: Flange, to be used with flanges that are ANSI Class 125
(B16.1) and ANSI Class 150 (B16.5) dimensions.
Pressure Limit: 225 psi (15.5 bar) WOG.
Wetted Materials:
Body Material: Ductile iron.
Disc: 316 SS.
Seat and O-ring: EPDM or PTFE.
Stem: 410 SS.
Temperature Limits: Disc: EPDM: -50 to 250°F (-46 to 121°C). PTFE: 0 to
300°F (-18 to 149°C).
Bearings: Nylatron.
Flow Rate: See Cv chart.
Operator: 2 to 6˝: 10-position locking hand lever. 8 to 12˝: manual gear.
øE
1-31/32
(50.01)
1-31/32
(50.01)
1-31/32
(50.01)
2-49/64
(70.25)
2-49/64
(70.25)
2-49/64
(70.25)
4-1/64
(102)
4-1/64
(102)
4-1/64
(102)
h
ød
9/32 1-25/64
(7.14) (35.32)
9/32 1-25/64
(7.14) (35.32)
9/32 1-25/64
(7.14) (35.32)
23/64 2-11/64
(9.13) (55.17)
23/64 2-11/64
(9.13) (55.17)
23/64 2-11/64
(9.13) (55.17)
29/64 2-49/64
(11.5) (70.25)
29/64 2-49/64
(11.5) (70.25)
29/64 2-49/64
(11.5) (70.25)
L
1-17/64
(32.15)
1-17/64
(32.15)
1-17/64
(32.15)
1-17/64
(32.15)
1-17/64
(32.15)
1-17/64
(32.15)
1-1/2
(38)
1-1/2
(38)
1-1/2
(38)
ISO 5211
LO
P
23/64 x 23/64 10-41/64 F05
(9.13 x 9.13) (270.27)
23/64 x 23/64 10-41/64 F05
(9.13 x 9.13) (270.27)
23/64 x 23/64 10-41/64 F05
(9.13 x 9.13) (270.27)
10-41/64 F07
7/16 x 7/16
(11.11 x 11.11) (270.27)
10-41/64 F07
9/16 x 9/16
(14.29 x 14.29) (270.27)
10-41/64 F07
9/16 x 9/16
(14.29 x 14.29) (270.27)
43/64 x 43/64 14-3/16 F10
(17.07 x 17.07) (360.36)
19-11/16 F10
7/8 x 7/8
(22.23 x 22.23) (500.06)
19-11/16 F10
7/8 x 7/8
(22.23 x 22.23) (500.06)
Phone: 219/879-8000
Fax: 219/872-9057
www.dwyer-inst.com
e-mail: info@dwyermail.com
VALVE DISASSEMBLY
1. After removal of valve from the piping system, open the valve fully;
2. Remove the handle or actuator;
3. Remove the stem retaining pins;
4. Pull out the upper stem;
5. Pull out the bottom stem;
6. Remove the disc from the liner. Do not damage the disc edge;
7. Remove the liner;
8. If the valve has bushings and o-rings, remove by tapping with blunt instrument;
9. Inspect all components for wear and replace as required.
VALVE ASSEMBLY
1. Clean all reusable parts;
2. If valve has bushings and o-rings, tap them carefully;
3. Apply a lubricant or soapy solution compatible with elastomers to facilitate
assembly;
4. Insert liner into body by pressing it into the body evenly;
5. Insert disc in open position into liner. Make certain broached end of disc is at
the upper stem end of the body;
6. Coat the upper stem with a general purpose lubricant & install into body;
7. Install bottom stem;
8. Install retaining pins to both stems;
9. Install the operator;
10. Check assembly by opening & closing the valve several times;
11. Follow installation instructions for reinstalling the valve in the piping system.
BREAK TORQUES IN INCH-POUNDS
Size (inches)
EPDM Seats
Service Pressure 2
2-1/2 3
4
50 psi
86 126 179 295
100 psi
108 144 195 310
150 psi
126 150 210 335
200 psi
150 198 297 400
PTFE Seats
Service Pressure
50 psi
100 psi
150 psi
200 psi
Size (inches)
2
2-1/2 3
125 130 195
130 145 210
142 160 248
180 220 340
Cv VALUES
DEGREE OPENING
Size 10° 20° 30° 40° 50°
2˝
0.1 5
45
12 24
2-1/2˝ 0.2 8
65
20 37
3˝
0.3 12 22 39
70
4˝
0.5 17 36 78
139
5˝
0.8 29 61 133 237
6˝
2
45 95 205 366
3
8˝
89 188 408 727
4
10˝
151 320 694 1237
5
12˝
234 495 1072 1911
4
390
430
443
490
5
540
610
699
725
6
750
780
847
940
5
650
690
720
795
6
890
940
974
1020
70°
90
144
183
364
620
958
1903
3240
5005
60°
64
98
116
230
392
605
1202
2047
3162
8
1440
1490
1549
1800
10
2466
2910
3360
3890
8
1690
1710
1770
1890
80°
125
204
275
546
930
1437
2854
4859
7505
12
3510
4100
5560
7558
10
3699
4365
5040
5835
12
5265
6150
8340
11367
FULL OPEN
90°
135
220
302
600
1022
1579
3136
5340
8250
Cv is the number of U.S. GPM of 60°F water that will pass through the valve with
a 1 PSI pressure drop.
MAINTENANCE
No regular maintenance or lubrication is required.
WARRANTY
The Series BFV Butterfly Valve is warranted from defects in materials and
workmanship for (1) year from the date of purchase. In the unlikely event the valve
should fail, the unit can be returned to the factory for warranty repair if the warranty
period has not expired. Contact our customer service department for an RGA
number and to set up the return.
MANUAL GEAR “MG”
F
Ø
C
B
G
HAND LEVER “HL”
A
LO
h1
E
g1
MANUAL GEAR DIMENSIONS [in (mm)]
Size A
8˝- 2-61/64
10˝ (75)
3-13/64
12˝ (81.36)
B
2-31/64
(63.10)
3-5/32
(80.17)
C
3-63/64
(101.20)
4-21/32
(118.27)
E
2-61/64
(75)
3-13/64
(81.36)
HAND LEVER DIMENSIONS [in (mm)]
6˝
5˝
4˝
3˝
2-1/2˝
Size 2˝
LO 10-41/64 10-41/64 10-41/64 10-41/64 10-41/64 10-41/64
(270.27) (270.27) (270.27) (270.27) (270.27) (270.27)
F
9-27/32
(250.03)
8-15/16
(227.01)
G
3-25/64
(86.12)
3-9/32
(83.34)
W.E. ANDERSON DIV., DWYER
INSTRUMENTS, INC.
g1
2-49/64
(70.25)
2-49/64
(70.25)
8
2
3/4
-10UNC
10
12
2-1/4 2-1/2
7/8
7/8
-9UNC -9UNC
FIGURE 1
LUG RECOMMENDED FLANGE BOLT LENGTHS (Fig. 1)
Valve Size (inches)
DIM 2
6
4
3
2-1/2
5
B
2
1-3/4
1-1/2
1-1/2
1-1/2
1-3/4
D
3/4
5/8
5/8
5/8
5/8
3/4
-11UNC -11UNC -11UNC -11UNC -10UNC -10UNC
©Copyright 2014 Dwyer Instruments, Inc.
h1
1/8
(3.18)
1/8
(3.18)
Ø
11-13/16
(300.04)
11-13/16
(300.04)
Printed in U.S.A. 9/14
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U.S.A.
Phone: 219/879-8000
Fax: 219/872-9057
FR# RV-440860-50 Rev. 2
www.dwyer-inst.com
e-mail: info@dwyermail.com
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