Flowserve BTV 2000 User Manual
Brand and product name
Installation
Description
Code
Brand and product name
Installation
Operation
Maintenance
Description
Code
BTV/BUV 2000
Operation
FCD DVENIM0000-01
Maintenance
MAINTENANCE SCHEDULE AND NOTES
Date Comments
Date Comments
BTV/BUV 2000
Date Comments
Date Comments
2
BTV/BUV 2000
FOREWORD
The Flowserve Corporation, Flow Control Division has
established this Installation, Operating and Maintenance
Manual to facilitate field installation, operation and repair of
BTV-2000 and BUV-2000 Series Butterfly Valves.
It is recommended that questions or concerns regard ing the
processes described in this manual be directed to Flowserve
Field Sales Representative, authorized stocking distributor
or the Flowserve Corporation, Flow Control Division.
Part numbers referenced in the following sections are
available from the Flowserve Corporation, Flow Control
Division.
Only Flowserve replacement repair parts and assembly
tooling made or designed by the Flowserve Corporation
should be used.
HOW TO SPECIFY
12 - B T L 4 8 1 - V P1
SIZE
2” - 24”
Blank = ANSI 150
VALVE TYPE
B = Butterfly
LINER MATERIAL
T = PTFE
U = UHMWPE
BODY STYLE
W = Wafer
L = Lug
1 = Enclosed Gear
BODY MATERIAL
4 = A395 GR. 60-40-18
(2” - 24”) DCI
1 = A744 GR. CF8M
(All Sizes) D4
0 = A351/A744 GR. CD4M-CU D100
1 = A351/A744 GR. CF8M D4
2 = A351/A744 GR. CN7M D20
3 = A494 GR. M-35-1 DMM
5 = A494 GR. N7M DC2
6 = A494 GR. CW6M DC3
7 = B367 GR. TI-PD 8A TIP
8 = PFA COATED DIPA
9 = UHMWPE COATED DIPE
S = A351/A744 GR. CK-3MCuN 254 SMO*
FLANGE
DRILLING
P1 = DIN PN10
P6 = DIN PN16
ELASTOMER
SEALS
Blank = Silicone
V = Viton
ACTUATOR
0 = 10 Position
Locking Lever
9 = Bare Stem
(Specify Type)
STEM & DISC
MATERIAL
PRESSURE CONTAINING FASTENERS
Material Selection
Selecting the proper fastener material is the ultimate
responsibility of the customer because the supplier does
not typically know in what service the valves will be used
or what elements may be present in the en vironment.
Flowserve normally supplies B7 (carbon steel) for ductile
cast iron and carbon steel valves. For stain less steel and
high alloy valves, B8 (stainless steel) fasteners are supplied
as standard. All fasteners used must have a minimum yield
strength of 40,000 PSI, a minimum elongation of 12% and
be compatible with the process fluid. Determining compatibility to the process fluid goes beyond a material being
resistant to general corrosion because the more important
con sid eration is a material’s resistance to stress corrosion
cracking. Depending on the service, it may make sense to
use B7 fasteners on high alloy valves. One such service
would be marine environments because of stainless steel’s
susceptibility to stress corrosion cracking in chloride
environments. Another key aspect of fasteners is frequent
visual inspection. Because of the common practice of using
steel fasteners rather than stainless steel to avoid chloride
stress corrosion cracking, visual inspection is recommended to monitor the general corrosion of these fasteners.
If jacketing or insulation is used on a valve, it must be
periodically removed for visual inspection of the fasteners.
If you wish assistance in determining the proper fasteners
to use, please refer to the attached chart or contact
Flowserve Materials Engineering Group at (937) 226-4475.
Design & Type
The Flowserve valve design standards adopt ANSI B18.2.1
(1981) as the standard for fastener type and design. This
national standard requires that finished hex “head” cap
screws be used when the head of the fastener is turned. A
finished hex “head” cap screw and a heavy hex cap screw
have a bearing surface under the head to minimize frictional
resistance during tightening. They also comply to qualified
body dimen sions and fully formed head dimensions.
Cookeville Flow Control Division’s policy is to use finished
hex “head” and heavy hex “head” cap screws for all
pressure retaining fasteners. This includes top caps, packing
adjusters, plug adjusters, bottom caps, body halves or other
pressure retaining components. Compliance is made with
ANSI B18.2.2 (1987), Square and Hex Nuts, when studs and
heavy hex nuts are required. Additional information on these
items may be obtained from the Flowserve Corporation,
Cookeville Flow Control Division, Cookeville, Tennessee.
the
+ Coated Disc Insert Material: A395 GR. 60-40-18 (2”-24”) DCI
*Registered Trademark of Avesta AB
3
FASTENERS
TABLE 1
Cap Screws-Studs
HHCS - Finished Heavy Hex Head Cap Screw
HCS - Finished Hex Head Cap Screw
SCS - Socket Head Cap Screw
STUD - Stud
SCYC - Socket Head Cap Screws for Retainer plates per ASTM A574-
4037 Alloy Steel, Yellow Zinc Dichromate Plated
Dimensions per ANSI B18.2.1
Alloy identification stamp required on each piece.
Certification required.
Alloy Specification (40 KSI Minimum Yield Strength,
12% Min. El.)
ASTM Material Specifications
B840 - 304 Stainless Steel per ASTM A193, Grade 8B, Class 1, 40
KSI Min. Yield Strength, 12% Min. El.
B7 - Chromium - Molybdenum Alloy Steel per ASTM A193, Grade
B7
B7M - Chromium - Molybdenum Alloy Steel per ASTM A193,
Grade B7M, 100% hardness tested
B7MT - Chromium - Molybdenum Alloy Steel per ASTM A193,
Grade B7M, 100% hardness tested, PTFE coated, DuPont
SP11C, type B - Color blue or green.
B8M - 316 Stainless Steel per ASTM A193, Grade B8M, Class 1,
40 KSI Min. Yield Strength, 12% Min. El.
B8C2 - 304 Stainless Steel per ASTM A193, Grade B8, Class 2.
C20 - Carpenter C20, CB-3 (UNS N08020), ASTM B473, 40 KSI
Min. Yield Strength, 12% Min. El.
HC - Hastelloy C276 (UNS N10276), ASTM B574
I625 - Inconel 625 (UNS N006625), ASTM B446
I825 - Incoloy 825 (UNS N08825), ASTM B425, 40 KSI Min. Yield
Strength, 12% Min. El.
IN - Inconel 600 (UNS N0660), ASTM B166, 40 KSI Min. Yield
Strength, 12% Min. El.
M - Monel (UNS N04400), ASTM B164, Class A or B, 40 KSI Min.
Yield Strength, 12% Min. El.
HB - Hastelloy B (UNS 10665), ASTM B335
I718 - Incoloy 718, AMS 5596B
MKH - Monel K-500, Cold drawn and aged hardened, QQN-286
and ASTM F468
L7 - Chromium-Molybdenum Alloy Steel per ASTM A320, Grade
L7
L7M - Chromium-Molybdenum Alloy Steel per ASTM A320, Grade
L7M, 100% hardness tested
L7T - Chromium-Molybdenum Alloy Steel per ASTM A320, Grade
L7, PTFE coated, DuPont SP11C, Type B - Color blue or green
L7MT - Chromium-Molybdenum Alloy Steel per ASTM A320,
Grade L7M, 100% hardness tested, PTFE coated, DuPont
SP11C, Type B - Color blue or green.
N - Nickel per ASTM B160 (UNS N0220), 40 KSI Min. Yield
Strength, 12% Min. El.
B7YC - Chromium-Molybdenum Steel per A193, Grade B7, Yellow
Zinc Dichromate Plated
BTV/BUV 2000
TABLE 2
Nuts
HN - Finished Heavy Hex Nut
XN - Finished Hex Nut
HXN - Regular Heavy Hex Nut
Dimensions per ANSI B18.2.2
Alloy identification stamp is required on each piece.
Certification required.
ASTM Material Specifications
8 - 304 Stainless Steel per ASTM A194, Grade 8
8M - 316 Stainless Steel per ASTM A194, Grade 8M
2H - ASTM A194, Grade 2H
2HM - ASTM A194, Grade 2HM
7M - ASTM A194, Grade 7M, 100% hardness tested
7MT - ASTM A194, Grade 7M, 100% hardness tested, PTFE
coated, DuPont SP11C, Type B - Color blue or green
M - Monel (UNS N04400), ASTM B164, Class A or B, or QQN-
281, Class B
HB - Hastelloy B (UNS N10665), ASTM B335
HC - Hastelloy C276 (UNS N10276), ASTM B574
I625 - Inconel 625 (UNS N06625), ASTM B446
I718 - Incoloy 718, AMS 5596B
I825 - Incoloy 825 (UNS N08825), ASTM B425
L7 - Chromium-Molybdenum Alloy Steel per ASTM A194,
Grade 7
L7M - Chromium-Molybdenum Alloy Steel per ASTM A194,
Grade 7M, 235 BHN Max, ASTM A320, Section 9
MKH - Monel K-500, Cold drawn and aged hardened, QQN-286
and ASTM F467
8F - 303 Stainless Steel per ASTM A194, Grade 8F
2HYC - ASTM A194, Grade 2H, Yellow Zinc Dichromate Plated
4
BTV/BUV 2000
SECTION V
Section Title Page
A. VALVE ASSEMBLY –
1
/2” & 3/4” G4, G4R
TABLE OF CONTENTS
Foreword 3
I. Safety Precautions 5
II. Installation 6
III. Disassembly Procedure 7
IV. Parts List 7
V. Repair Kits 9
VI. Assembly Instructions 10
VII. Gear Operator Installation 17
VIII. Changing Gear Operator Quadrants 17
IX. Locking Lever Installation 18
X. Changing Locking Lever Quadrants 18
XI. Stud Bolts and Cap Screw Lengths – Wafer Style Body 19
XII. Cap Screw Lengths – Lug Style Body 19
SECTION I
Safety Precautions
To ensure that the valve is installed in a safe manner, please
adhere to the following precautions before removal or
disassembly of any valve.
1. There is a possibility of pressurized media build
up behind the valve liner. Wear suitable protective
equipment for the fluid involved when removing a
valve from the pipeline.
2. Depressurize and bleed the line on both sides of the
valve before removing the valve.
Design Changes
In order to follow the Flowserve commitment to contin uous
improvement, we reserve the right to change product and
performance specifications without notice.
3. Check nameplate before installation to ensure that the
valve is not installed in systems where service conditions
exceed those for which the valve was designed.
4. Remove or install the valve with the disc in the closed
position.
5. Never attempt to adjust the disc in the seat while the
valve is pressurized.
5
SECTION II
INSTALLATION
BTV/BUV 2000
1. The protective covers provided on each valve should
remain in place during any storage and handling
operations.
2. The Durco Butterfly Valve is designed for installation
between ANSI Class 150 flanged piping systems. All
types of flanges are permissible if clearance is provided
for the swing of the disc and support is provided for the
valve liner. Table 3 lists disc swing clearance requirements for mating pipe flanges. IMPORTANT – Fittings
such as tees and elbows cannot be bolted directly to the
valve. Spacers must be used.
3. Check the valve nameplate before installation to ensure
that the pressure rating and materials of construction
are compatible with the intended service conditions.
4. Inspect adjoining pipelines and remove any material that
could damage the valve liner.
5. Use flange gaskets to protect the valve liner during
installation.
6. Keep the valve in the closed position during all handling
and installation operations. This is necessary to protect
the disc sealing edge from damage and to ensure proper
positioning of the liner until the valve is installed.
7. Keep the valve liner clean. Any dirt or debris left in the
valve can scratch the liner or disc edge. Such damage
can impair the bubble tight shutoff provided by this
valve.
8. Do not allow the liner to catch on the mating pipe I.D.
and fold over. This will cause flange leakage and severe
damage to the liner.
9. While the BTV valve is bidirectional and will function
properly with the shaft orientation either vertical or
horizontal, the preferred orientation is with the shaft
horizontal and the disc lower edge opening downstream
for optimal service life.
10. Proper alignment of the valve in mating flanges is
required. This is especially true if oversize bolt holes
are used in piping flanges.
Flange bolts should be torqued to values listed in Table 4.
11.
12. After the valve has
been installed between
flanges and all
flange bolts have
been tightened, slowly
turn the disc and
check for freedom of
Disc Dimension
disc movement.
at Valve Face
13. If the valve is to be
removed from the
pipeline for any
reason, the
valve must be closed
Disc Projection
loosened. The valve must remain closed until removed
before any of the
flange bolts are
from the pipeline. SEE SAFETY PRECAUTIONS.
14. For recommended flange bolting sizes and lengths, refer
to Tables in Section XI and XII.
DO NOT run sharp instruments between the valve and liner
or between the liner and the pipe flanges. This practice will
result in severe liner damage.
TABLE 3
TABLE 4
Flange Bolting Torques
These are minimum torque values as established in Section
VIII of the ASME Boiler Code. Your piping practices,
materials and gaskets may dictate the use of torque values
greater than those listed. Refer to Section VIII of the ASME
Code for proper bolting torques.
VALVE DISC DISC DIM. AT
SIZE PROJECTION VALVE FACE
IN (MM) IN (MM) IN (MM)
2 (51) 0.390 (9.91) 1.805 (45.85)
3 (76) 0.672 (17.06) 2.586 (65.68)
4 (102) 0.994 (25.24) 3.487 (88.56)
6 (152) 1.860 (47.24) 5.510 (139.9)
8 (203) 2.688 (68.27) 7.379 (187.4)
10 (254) 3.626 (92.10) 9.569 (243.0)
12 (305) 4.438 (112.7) 11.564 (293.7)
14 (356) 5.071 (128.8) 12.758 (324.1)
16 (406) 5.626 (142.9) 14.718 (373.8)
18 (457) 6.407 (162.7) 16.719 (424.7)
20 (508) 7.157 (181.8) 18.656 (473.9)
24 (610) 7.781 (197.6) 20.750 (527.2)
VALVE SIZE TORQUE
in (mm) Ft.-Lbs. (Nm)
2 (51) 49 (66)
3 (76) 84 (114)
4 (102) 61 (83)
6 (152) 123 (167)
8 (203) 164 (222)
10 (254) 155 (210)
12 (305) 198 (268)
14 (356) 246 (334)
16 (406) 230 (312)
18 (457) 331 (449)
20 (508) 303 (411)
24 (610) 458 (620)
6
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