Dwyer Instruments WE20 Series, BFV205LTB341HL0, BFV210WFB342MG0, BFV204LTB341HL0, BFV202WFB341HL0 User manual

Series BFV Butterfly Valves

B

A

n = # of holes

h

L

A

B

øD1

BOLT CIRCLE

n = # of holes

M = thread size

øD

C

øg

h

135°

øK

P

øE

ø

d

4

PLCS

Specifications - Installation and Operating Instructions

WAFER STYLE

“WF”

WAFER STYLE

Bulletin V-6

LUG STYLE

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.

SPECIFICATIONS
VALVE BODY
Service: Compatible liquids, gases, and steam.
Line Size: 2˝ to 12˝.
Body Style: 2-way, wafer, or lug butterfly.

LUG STYLE

“LT”

End Connections: Flange, to be used with flanges that are ANSI Class 125

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.

(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).
Lug style bodies used for dead end service must be installed as marked on the
body (inlet–outlet).

Bearings: Nylatron.

Flow Rate: See Cv chart.

Operator: 2 to 6˝: 10-position locking hand lever. 8 to 12˝: manual gear.

DIMENSIONS [in (mm)]

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)

Size

6-11/32

2˝

(161.13)
6-57/64

2-1/2˝

(175.02)
7-9/64

3˝

(181.37)
7-7/8

4˝

(200.03)
8-25/64

5˝

(213.12)
8-29/32

6˝

8˝

10˝

12˝

(226.22)
10-1/4
(260.31)
11-1/2
(292.10)
13-9/32
(337.34)

3-11/32
(85)
3-55/64
(98)
4-3/32
(104)
4-27/32
(123)
5-11/32
(136)
5-53/64
(148)
7-5/16
(186)
8-11/32
(212)
9-7/8
(251)

1-21/32
(42.07)
1-49/64
(44.85)
1-25/32
(45.24)
2-1/16
(52.39)
2-5/32
(54.77)
2-13/64
(55.96)
2-25/64
(60.72)
2-19/32
(65.88)
3-1/32
(76.99)

C

B

A

W.E. ANDERSON DIV., DWYER
INSTRUMENTS, INC.

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U. S. A.

Find Quality Products Online at: [e-mail]

n, WF

4

4

4

4

8

8

8

12

12

n, LT

4

4

4

8

8

8

8

12

12

M

5/8
(15.88)
5/8
(15.88)
5/8
(15.88)
5/8
(15.88)
3/4
(19.05)
3/4
(19.05)
3/4
(19.05)
7/8
(22.23)
7/8
(22.23)

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)

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)

ød

9/32
(7.14)
9/32
(7.14)
9/32
(7.14)
23/64
(9.13)
23/64
(9.13)
23/64
(9.13)
29/64
(11.5)
29/64
(11.5)
29/64
(11.5)

h

1-25/64
(35.32)
1-25/64
(35.32)
1-25/64
(35.32)
2-11/64
(55.17)
2-11/64
(55.17)
2-11/64
(55.17)
2-49/64
(70.25)
2-49/64
(70.25)
2-49/64
(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)

P

23/64 x 23/64
(9.13 x 9.13)
23/64 x 23/64
(9.13 x 9.13)
23/64 x 23/64
(9.13 x 9.13)
7/16 x 7/16
(11.11 x 11.11)
9/16 x 9/16
(14.29 x 14.29)
9/16 x 9/16
(14.29 x 14.29)
43/64 x 43/64
(17.07 x 17.07)
7/8 x 7/8
(22.23 x 22.23)
7/8 x 7/8
(22.23 x 22.23)

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]

www.GlobalTestSupply.com

LO

10-41/64
(270.27)
10-41/64
(270.27)
10-41/64
(270.27)
10-41/64
(270.27)
10-41/64
(270.27)
10-41/64
(270.27)
14-3/16
(360.36)
19-11/16
(500.06)
19-11/16
(500.06)

ISO 5211

F05

F05

F05

F07

F07

F07

F10

F10

F10

ALVE DISASSEMBLY

LO

F

C

B

A

E

Ø

G

h1

g1

V

. After removal of valve from the piping system, open the valve fully;

1

. Remove the handle or actuator;

2

. Remove the stem retaining pins;

3

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;

. Remove the liner;

7

. If the valve has bushings and o-rings, remove by tapping with blunt instrument;

8

. Inspect all components for wear and replace as required.

9

VALVE ASSEMBLY

1. Clean all reusable parts;

2. If valve has bushings and o-rings, tap them carefully;

. Apply a lubricant or soapy solution compatible with elastomers to facilitate

3

ssembly;

a

. Insert liner into body by pressing it into the body evenly;

4

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;

. Install retaining pins to both stems;

8

. Install the operator;

9

0. Check assembly by opening & closing the valve several times;

1

11. Follow installation instructions for reinstalling the valve in the piping system.

MAINTENANCE

No regular maintenance or lubrication is required.

ARRANTY

W

he Series BFV Butterfly Valve is warranted from defects in materials and

T
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.

REAK TORQUES IN INCH-POUNDS

B

EPDM Seats

ervice Pressure

S

50 psi

00 psi

1

50 psi

1
200 psi

PTFE Seats

ervice Pressure

S

0 psi

5
100 psi

50 psi

1
200 psi

v VALUES

C

EGREE OPENING

D

ize

0°

S

1

2˝

0.1

2-1/2˝

0.2

3˝

0.3

˝

.5

4

0

˝

.8

5

0

˝

6

2
3

8˝

4

10˝

5

12˝

v is the number of U.S. GPM of 60°F water that will pass through the valve with

C

a 1 PSI pressure drop.

20°

5
8

2

1

7

1
29
45
89
151

34

2

ize (inches)

S

2

2

126

6

8

1

108

150

26

1

1

50

1

Size (inches)

2

2

125

130

30

1

1

142

160

80

1

2

40°

30°

24

12

7

3

0

2

9

3

2

2

8

7

6

3

133

61

205

95

408

188

694

320

072

1

95

4

-1/2

3

4

179

295

44

95

1

10

3

210

335

98

97

2

00

4

-1/2

3

4

195

390

45

10

2

30

4

248

443

20

40

3

90

4

60°

50°

64

45

8

9

5

6

16

1

0

7

30

2

39

1

392

237

605

366

1202

727

2047

1237

162

3

911

1

ANUAL GEAR “MG”

M

5

40

5
610

99

6
725

5
650

90

6
720

95

7

70°

90

44

1

83

1

64

3
620
958
1903
3240

005

5

6
750
7
847
9

6
890
9
974
1

80

40

40

020

8

125
204
275
5
9
1
2854
4859
7505

8
1440

490

1
1549

800

1

8
1690

710

1
1770

890

1

FULL OPEN
9

0°

1
220
302
600

46

1

30

1

437

3
5340
8250

0°

35

022
579
136

0

1
2466

910

2
3360

890

3

0

1
3699

365

4
5040

835

5

2

1
3510

100

4
5560

558

7

2

1
5265

150

6
8340

1367

1

HAND LEVER “HL”

HAND LEVER DIMENSIONS [in (mm)]

2˝

Size

10-41/64

LO

(270.27)

2-1/2˝

10-41/64
(270.27)

3˝

10-41/64
(270.27)

4˝

10-41/64
(270.27)

5˝

10-41/64
(270.27)

6˝

10-41/64
(270.27)

MANUAL GEAR DIMENSIONS [in (mm)]

G

F

E

C

Size
8˝­10˝

12˝

LUG RECOMMENDED FLANGE BOLT LENGTHS (Fig. 1)

DIM

B
D

B

A

2-31/64

2-61/64

(63.10)

(75)

3-5/32

3-13/64

(80.17)

(81.36)

Valve Size (inches)

2-1/2

2

1-1/2

1-1/2

5/8

5/8

-11UNC

-11UNC

3-63/64
(101.20)
4-21/32
(118.27)

3

1-1/2
5/8

-11UNC

2-61/64
(75)
3-13/64
(81.36)

FIGURE 1

4

1-3/4
5/8

-11UNC

9-27/32
(250.03)
8-15/16
(227.01)

5

1-3/4
3/4

-10UNC

3-25/64
(86.12)
3-9/32
(83.34)

6

2
3/4

-10UNC

Ø

11-13/16
(300.04)
11-13/16
(300.04)

8

2
3/4

-10UNC

g1

2-49/64
(70.25)
2-49/64
(70.25)

10

2-1/4
7/8

-9UNC

h1

1/8
(3.18)
1/8
(3.18)

12

2-1/2
7/8

-9UNC

©Copyright 2014 Dwyer Instruments, Inc. Printed in U.S.A. 9/14 FR# RV-440860-50 Rev. 2

W.E. ANDERSON DIV., DWYER
INSTRUMENTS, INC.

P.O. BOX 358 • MICHIGAN CITY, INDIANA 46360 U. S. A.

Find Quality Products Online at: [e-mail]

Phone: [phone] www.dwyer-inst.com
Fax: [phone] e-mail: [e-mail]

www.GlobalTestSupply.com