21
AMERICAN BOA, INC. STANDARD INDUSTRIAL EXPANSION JOINT SERIES
AMERICAN BOA, INC.STANDARD INDUSTRIALEXPANSION JOINT SERIES
Sales office USA
American Boa Inc.P.O. Box 1301Cumming, Ga 30028Tel. 770.889.9400Telecopier: 770.781.3968Email: Homepage: www.americanboa.com
ISO 9001:1994No. 98:693
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Technical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Selection Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
“XP” Expansion Compensators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
“ECO” Externally Pressurized Expansion Joints . . . . . . . . . . . . . . . . . 10
“HVAC” Expansion Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
“SRV” Vent Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
“BCT” Bellows Flexible Connectors . . . . . . . . . . . . . . . . . . . . . . . . . 16
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Other American BOA Flexible Products . . . . . . . . . . . . . . . . . . . . . . 18
This catalog offers a series of expansion joints, expansion compensators and metal bellows flexible connectors to absorb thermalexpansion or vibration for the special requirements of “Light Industrial” piping systems.
How to Order American BOA Expansion JointsAll American BOA Standard Industrial Expansion Joint products are manufactured in large quantities with a consistent high qualitywhile parts and components are stocked to ensure the shortest possible delivery. Each model number is unique and describes thedesign, size, pressure rating and movement capacity.
For example:To order a 3” Expansion Compensator with Carbon Steel welding ends simply specify the model XPW 80. This unit includes a SS 304bellows with carbon steel welding ends and is rated for 200 psig at 750ºF. It allows for a rated movement of 1 3⁄4” compression and1⁄4” extension.
If you require a 10” expansion joint with weld ends rated for 300 psig at <400ºF and a movement of 7”, specify our model 10-ECO-300-L. This will describe the respective model with the 8” rated movement, sufficient for the desired application.
American BOA sales representatives and distributors are located throughout North America. Our experienced sales personnel are gladto provide professional service. To find the nearest representative or distributor, contact us by phone (770) 889-9400, by fax (770) 781-3968 or e-mail: [email protected]. Our website www.americanboa.com will provide additional information.
Contents Page
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
Applications
American BOA metal bellows are known for their superior flexibility. The bellows are able tocompensate for large movements in the axial, lateral and angular direction or mechanical vibration.BOA bellows ensure the lowest possible forces combined with extreme longevity. This makesAmerican BOA expansion joints and compensators ideal components that minimize stress and strainin pipes and extend the life of any system (steam, hot water, hot gas) exposed to elevated and vary-ing temperatures. American BOA flexible Bellows Connectors ensure that suction and dischargenozzles of pumps and compressors are protected from high forces and moments and that vibrationis not transmitted into the piping system. This will increase the durability of rotary equipment andreduce the noise level throughout the entire system.
“XP” Expansion Compensators
Compensators are used to absorb thermal growth of smalldiameter piping systems. By utilizing the externally pressurized bellows design, “XP” expansion compensatorsallow relatively large axial movements while maintaininghigh pressure capacity. “XP” expansion compensators areavailable in diameters from 3⁄4” through 4” with weldingends or male NPTs in carbon steel and from 3⁄4” through3” with copper ends. The shroud protects the bellows from external damage. This design offers anexcellent solution to handle thermal growth of pipes in hot and chilled water, steam and condensatesystems in buildings.
“ECO” Externally Pressurized ExpansionJoints
Externally pressurized expansion joints are designed tocompensate for the axial movements of long pipe runs.Available in diameters from 2” through 12” with weldingends or flanges, these standard expansion joints are ratedfor 300 psig with 4” and 8” axial movement respectively.The heavy housing completely encloses the flexiblebellows and provides utmost safety against external
damage. “ECO” externally pressurized expansion joints are a preferred choice for absorbingthermal growth of long distance heat transfer pipes and similar piping systems.
2
3
“HVAC” Expansion Joints
HVAC expansion joints are typically utilized tocompensate for moderate to large thermal expansionin the axial, lateral and angular directions. They areavailable in diameters from 3” through 24”, rated foreither 50 or 150 psig pressure with two movementranges. “HVAC” standard expansion joints with weld-ing ends or flanges offer an economical solution tomost 3-D pipe expansion problems.
“SRV” Vent Connectors
Vent Connectors are engineered to withstand the turbulent and high velocity flow typical for ventlines after pressure relief or safety valves. American BOA “SRV” Vent Connectors utilize multi-plybellows that ensure large movement capacity with lowest possible forces and moments at thevalve and equipment connections. Multi-ply bellows are superior to any other metal bellowsdesign in handling high frequency, flow induced vibration. The standard “SRV” design features a“full bore flow” that ensures minimum back-pressure and a heavy housing that protects againstdamage and uncontrolled flow medium discharge. Standard “SRV” Vent Connectors are availablein diameters from 11⁄2” through 12” with welding ends or flanges.
“BCT” Bellows Flexible Connectors
Bellows Connectors feature multi-ply bellows for superior vibration control, reduction of stress inpipes and equipment, misalignment compensation and reduction of noise. Utilize “BCT” BellowsConnectors for suction and discharge connections of pumps and compressors to enhance the lifeexpectancy of rotary equipment and piping, to ease installation and to reduce the noise levelthroughout the piping system. “BCT” Bellows Connectors are available in diameters from 2”through 16” and are rated for a pressure of 225 psig at 70ºF. The standard design includes 150lb.flanges and limit rods.
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
Thermal pipe expansion –– Thermal pipe expansion is the change in the length of a pipe due to the variation intemperature caused by the process or ambient conditions. To determine the correct thermal expansion, one shallalways consider the lowest possible and highest expected temperature.
Table 1: Thermal Expansion CoefficientThermal Expansion [in./100 ft.]
Axial Movement –– the difference in the length of abellows when moved from any given length to ashorter (compression) or longer (extension) length.
Lateral Movement –– the relative perpendiculardistance between the centerlines of the two ends of abellows. Sometimes referred to as lateral offset, lateralmisalignment or lateral shear.
Angular Movement –– the relative angle betweenthe centerlines of the bellows ends. Sometimesreferred to as angular rotation.
Example: Carbon Steel Pipe, 125 ft. longLowest temperature: -25ºFMax. temperature: 475ºFTotal thermal expansion = 1.25 x -0.68” + 1.25 x 3.39”= 5.0875” (inches)
Temp.[F]
CarbonSteel
StainlessSteel Copper
-25 -0.68 -0.98 -1.05
0 -0.50 -0.72 -0.79
25 -0.32 -0.46 -0.51
50 -0.14 -0.21 -0.22
70 0.00 0.00 0.00
100 0.22 0.33 0.34
125 0.41 0.61 0.62
150 0.60 0.89 0.90
175 0.80 1.17 1.77
200 1.00 1.46 1.48
225 1.20 1.74 1.77
250 1.40 2.03 2.05
275 1.61 2.32 2.34
300 1.82 2.61 2.62
325 2.04 2.91 2.91
350 2.25 3.20 3.19
375 2.48 3.50 3.48
400 2.70 3.80 3.88
425 2.93 4.10 4.17
450 3.16 4.41 4.47
475 3.39 4.71 4.76
500 3.62 5.01 5.06
525 3.86 5.31 6.35
550 4.11 5.62 5.64
575 4.35 5.93 -
600 4.60 6.24 -
625 4.86 6.55 -
650 5.11 6.87 -
675 5.37 7.18 -
700 5.63 7.50 -
725 5.90 7.82 -
750 6.16 8.15 -
775 6.43 8.47 -
800 6.70 8.80 -
Technical Information
4
Compression Extension
Spring Rate –– The spring rate is the force or moment required to move a bellows in the axial, lateral or angulardirection. The data units are specified in pounds/inch for axial and lateral movements and foot-pounds/degree forangular movements.
Spring Force / Moment –– The spring force or moment is the force required to move a bellows through the totalrequired axial, lateral or angular movement.
Bellows Effective Area –– The bellows effective area determines the pressure thrust when a bellows is subjectedto pressure. This area is specified in square-inches.
Pressure Thrust –– Pressure thrust is the force that is exerted when a bellows is pressurized. The pressure thrustis the result of the bellows effective area multiplied by the pressure. Always use the maximum possible pressure(typically the test pressure) when determining the pressure thrust.
The pressure thrust must be restrained either by means of pipe anchors or by the equipment itself to which theexpansion joint or pipe section is attached. If this cannot be achieved or proves expensive, the pressure thrustmust be restrained by suitable expansion joint hardware, (i.e., hinges, gimbals or tie-rods). Consult with AmericanBOA for the selection of the most economic expansion joint design.
Pipe Anchor –– A pipe anchor is the point along the piping system where the pipe is fixed. The anchor mustrestrain the pressure thrust, the spring forces of the bellows and the friction of the pipe guides. The distancebetween the pipe anchors determines the thermal expansion.
Pipe Guides / Supports –– Pipe guides prevent pipe instability (squirm, buckling) and control bellows movements.Pipe supports must support the weight so it does not adversively affect the bellows. It is recommended that anexpansion joint be installed near a pipe anchor and two pipe guides be located on the opposite side of the expansion joint. If this is not possible, two pipe guides are required on each side of the expansion joint. Refer tothe figures below for orientation and EJMA for appropriate spacing.
Fatigue Cycle –– A fatigue cycle is defined as one complete movement from the initial position in the pipingsystem to the operating position and back to the initial position.
The movement capacity (rated movement) of expansion joints and expansion compensators stated in thisbrochure refer to 1000 full fatigue cycles. If more than 1000 fatigue cycles are necessary to meet special plantdesign requirements, the permissible movement shall be determined as follows:
No. of Cycles Permissible movement1000 100%5000 63%10000 52%
5
Pressure thrust [lbs.] = bellows effective area [in2] x maximum pressure [lbs./in.]
Anchor force [lbs.] = pressure thrust + spring force + friction
Fatique Cycle Table A
6
Temperature (rated) –– The rated temperature is the maximum temperature to which rated pressures andmovements can be utilized. Refer to the data sheets for the temperature rating of the individual expansion joints /compensators.
Pressure (rated) –– The rated pressure is the maximum permissible operating pressure at rated temperature. Thedesign allows for a test pressure of 1.5 times design pressure. The data sheets of each design identify the ratedpressure.
Movement (rated) –– The rated movement is the amount of thermal expansion a bellows can absorb at the ratedtemperature, pressure and fatigue cycles. The movements specified in this catalogue are non-concurrent. Refer tothe table below to determine the affect of movement on fatigue cycles.
Percentage of movement utilized Expected no. of fatigue cycles
100% 1,00075% 2,70050% 10,60025% >100,000
Concurrent Movements –– Movements are concurrent when expansion joints are utilized to compensate forcombined movements in axial, lateral and angular directions. The allowable concurrent movements shall bedetermined as follows:
1– From this catalog, select an expansion joint that will accommodate all movement (axial, lateral andangular) requirements. Selected movements shall be larger or equal to the required movements.
2– Calculate the degree of utilization for each movement by dividing the required movement by the ratedmovement and sum the numbers. In order to determine the concurrent movement capability, the sumshall be less or equal to 1.0.
If the sum is >1.0, select an expansion joint with a larger movement capacity and repeat the calculation. If morethan 1000 fatigue cycles are required, refer to Table A to determine the permissible movements.
Fatigue Cycle Table (B)
Req. axial movement
Rated axial movement
Req. lateral movement
Rated lateral movement
Req. angular movement
Rated angular movement<=1.0+ +
Welding End –– A weld end is a pipe stub that is welded to the end of a bellows.The weld ends are beveled for joining the expansion joint / compensatorto the piping.
Flanged End –– A flange welded to the end of a bellows. It allows the expansion joint to be bolted to mating flanges.
Van Stoned End –– A van stoned end of a bellows is fitted with a floating flange. The flange can rotate and allows for easy alignment of the bolt-holes with the mating flange.
• Identify all existing pipe anchors, including all equipment connections in the piping system.• When flexible Bellows Connectors are used to dampen vibration of rotary equipment a pipe anchor shall be
located adjacent to the connector.
• Determine the expected thermal growth of each pipe section between anchors. (Refer to table 1 for thermalexpansion coefficient).
• Determine how many temperature cycles the piping system will experience during the design life of the plant.(Example: The design life of the plant is 20 years and the system will be started and shut-down 50 times per year,the total number of cycles will be 1000).
• Determine the pressure rating of the system in consideration of the design pressure and temperature.• From the data sheets in this catalog, select an expansion joint, expansion compensator, vent or flexible connector
that meets the design conditions with regard to material, pressure, temperature and movement ratings.• If the required movement exceeds the permissible movement of any standard expansion joint or expansion
compensator listed in this catalog, allow for additional intermediate pipe anchors that will reduce the distancebetween anchors and subsequently the amount of thermal growth per pipe section. Specify additional expansionjoints / compensators or consult American BOA for design options.
7
Selection Guidelines
20 years x 50 = 1000 cycles.
For alternative expansion joint solutions please contact American BOA.Ph. (770) 889 9400 Fax: (770) 781 3968
E-mail: [email protected]
Typical installation ofBCT pump connectors
Anchor
Anchor
Discharge
Suction
8
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
“XP” Expansion Compensators
Model XPW with Carbon Steel Weld Ends 200 psig 750ºF
Bellows:Welding ends:Shroud:Movement capacity:
Axial extension:Axial compression:
Pressure rating:Temperature rating:Test pressure:Number of cycles:
SS 304A106 / A 53 Gr. BCarbon steel
1⁄4”1 3⁄4”200 psig750º F300 psi>1000
American BOA XP Expansion Compensators offer the ideal solution to absorb thermal growth of pipesin hot and chilled water, steam and condensate piping systems. Utilizing engineered, multi-ply bellows,this series combines high flexibility with durability and is easy to install. The externally pressurizeddesign includes a heavy shroud that protects thebellows from external damage while the full-boreliner ensures free, unrestricted flow in both directions. XP Expansion Compensators are preset to fully utilize their large movement capability. After installation of pipe guides andanchors, remove the preset tabs and thecompensators are free to move. They areavailable in three standard designs:
Model XPW with CS Steel Weld EndsModel XPT with CS Male NPT EndsModel XPC with Copper Ends
PIPESIZE MODEL O/D O/L Springrate[Lb/In.]
EffectiveArea[in.2]
3⁄4”
1”
1 1⁄4”
1 1⁄2”
2”
2 1⁄2”
3”
4”
XPW 20
XPW 25
XPW 32
XPW 40
XPW 50
XPW 65
XPW 80
XPW 100
3”
3 1⁄2”
4”
4 1⁄2”
4 1⁄2”
5 1⁄2”
6 1⁄2”
7 3⁄32”
12 1⁄8”
12 1⁄8”
14 1⁄8”
14 1⁄8”
14 1⁄8”
15 1⁄2”
15 3⁄16”
15 3⁄16”
127
170
156
115
123
347
391
482
2.2
3.5
4.8
6.5
7.6
12.9
16.1
24.2
Wt.Lb.
5.5
7.0
10.2
12.3
13.2
19.6
24.4
27.5
9
Model XPT with Carbon Steel Male NPT 200 psig 750ºF
Bellows:End Fittings:Shroud:Movement capacity:
Axial extension:Axial compression:
Pressure rating:Temperature rating:Test pressure:Number of cycles:
SS 304NPT A 106 Carbon steel
1⁄4”1 3⁄4”200 psig750º F300 psig>1000
PIPESIZE MODEL O/D O/L Springrate[Lb/In.]
EffectiveArea[in.2]
Wt.Lb.
3⁄4”
1”
1 1⁄4”
1 1⁄2”
2”
2 1⁄2”
3”
4”
XPT 20
XPT 25
XPT 32
XPT 40
XPT 50
XPT 65
XPT 80
XPT 100
3”
3 1⁄2”
4”
4 1⁄2”
4 1⁄2”
5 1⁄2”
6 1⁄2”
7 3⁄32”
12 1⁄8”
12 1⁄8”
14 1⁄8”
14 1⁄8”
14 1⁄8”
15 1⁄2”
15 3⁄16”
15 3⁄16”
127
170
156
115
123
347
391
482
2.2
3.5
4.8
6.5
7.6
12.9
16.1
24.2
5.5
7.0
10.2
12.3
13.2
19.6
24.4
27.5
Model XPC with Copper End Fittings 200 psig 430ºF
Bellows:End fittings:Shroud:Movement capacity:
Axial extension:Axial compression:
Pressure rating:Temperature rating:Test pressure:Number of cycles:
SS 304Copper Sweat EndsSS 304
1⁄4”1 3⁄4”200 psig430º F300 psig>1000
PIPESIZE MODEL O/D O/L Springrate[Lb/In.]
EffectiveArea[in.2]
Wt.Lt.
3⁄4”
1”
1 1⁄4”
1 1⁄2”
2”
2 1⁄2”
3”
XPC 20
XPC 25
XPC 32
XPC 40
XPC 50
XPC 65
XPC 80
2 3⁄8”
2 3⁄8”
2 3⁄4”
2 3⁄4”
3 3⁄4”
4 3⁄8”
5”
12 1⁄2”
12 1⁄2”
13 13⁄16”
13 13⁄16”
13 13⁄16”
14 7⁄16”
14 7⁄16”
136
136
131
130
124
320
374
2.2
2.2
3.5
3.5
6.5
9.6
12.9
2.2
2.4
3.1
3.3
5.5
7.5
10.0
10
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
“ECO-” - Externally Pressurized Expansion Joints 150 & 300 psig 400ºF
PIPESIZE[IN.]
PRESS.RATING
[PSI]
MOVEMENT[IN.] MODEL WEIGHT O.D.
[IN.]O/L[IN.]
Springrate[Lb./In.]
EffectiveArea[in.2]
2”
2 1⁄2”
3”
4”
5”
150300150300150300
150
300
150
300
44444448484848
2-ECOW-150-S2-ECOW-300-S
2.5-ECOW-150-S2.5-ECOW-300-S3-ECOW-150-S3-ECOW-300-S4-ECOW-150-S4-ECOW-150-L4-ECOW-300-S4-ECOW-300-L5-ECOW-150-S5-ECOW-150-L5-ECOW-300-S5-ECOW-300-L
29293333484886
14586
145110175110174
2626262626262646264626462646
565565565565565565770385770385770385770385
“ECO” Externally Pressurized Expansion JointsAmerican BOA “ECO” externally pressurized expansion joints combine extreme movement capacitywith high pressure capability.
Rated for a pressure of 300 psig at 400ºF, this seriesallows to compensate for 4” and 8” of axial movementat very low spring rates. Additional features include anexternal shroud for bellows protection and a full boreinner liner that ensures unrestricted flow and allowsreverse flow conditions. The standard design is preset toabsorb maximum compression.
ECO externally pressurized expansion joints are utilizedto compensate the thermal expansion of long pipingsystems.
6 5⁄8”
6 5⁄8”
6 5⁄8”
8 5⁄8”
8 5⁄8”
16
16
35
35
MODEL ECO-W with Weld-ends
Bellows:Welding Ends:Flanges:
Shroud:Movement capacity:
Axial compression:Pressure rating:Temperature rating:Test pressure:Number of Lifecycles:
SS 304A 106 / A 53 Gr.BRFWN 150# and 300#Per ANSI B 16.5, A 105Carbon steel
4” / 8”150 and 300 psig400º F225 & 450 psig>1000
11
PIPESIZE[IN.]
PRESS.RATING
[PSI]
MOVEMENT[IN.] MODEL WEIGHT O.D.
[IN.]O/L[IN.]
Springrate[Lb./In.]
EffectiveArea[in.2]
2”
2 1⁄2”
3”
4”
5”
6”
8”
10”
12”
150300150300150300
150
300
150
300
150
300
150
300
150
300
150
300
444444484848484848484848484848
2-ECOF-150-S2-ECOF-300-S
2.5-ECOF-150-S2.5-ECOF-300-S3-ECOF-150-S3-ECOF-300-S4-ECOF-150-S4-ECOF-150-L4-ECOF-300-S4-ECOF-300-L5-ECOF-150-S5-ECOF-150-L5-ECOF-300-S5-ECOF-300-L6-ECOF-150-S8-ECOF-150-L6-ECOF-300-S6-ECOF-300-L6-ECOF-150-S8-ECOF-150-L8-ECOF-300-S8-ECOF-300-L
10-ECOF-150-S10-ECOF-150-L10-ECOF-300-S10-ECOF-300-L12-ECOF-150-S12-ECOF-150-L12-ECOF-300-S12-ECOF-300-L
414749576878
116175136195148213150238187273223309167364323420331483409567420600540720
31”31 1⁄2”31 1⁄2”
32”31 1⁄2”32 1⁄4”
32”52”
32 3⁄4”52 3⁄4”
33”53”
33 3⁄4”53 3⁄4”
33”53”
33 3⁄4”53 3⁄4”
36”56”
37 1⁄4”57 1⁄4”
36”56”
37 1⁄4”57 1⁄4”
37”57”
38 1⁄4”58 1⁄4”
565565565565565565770385770385770385770385845423845423
1233616
1233616
1400700
1400700
1750875
1750875
6 5⁄8”
6 5⁄8”
6 5⁄8”
8 5⁄8”
8 5⁄8”
10 3⁄4”
12 3⁄4”
14 1⁄2”
16 3⁄4”
PIPESIZE[IN.]
PRESS.RATING
[PSI]
MOVEMENT[IN.] MODEL WEIGHT O.D.
[IN.]O/L[IN.]
Springrate[Lb./In.]
EffectiveArea[in.2]
6”
8”
10”
12”
150
300
150
300
150
300
150
300
4848484848484848
6-ECOW-150-S6-ECOW-150-L6-ECOW-300-S6-ECOW-300-L8-ECOW-150-S8-ECOW-150-L8-ECOW-300-S8-ECOW-300-L
10-ECOW-150-S10-ECOW-150-L10-ECOW-300-S10-ECOW-300-L12-ECOW-150-S12-ECOW-150-L12-ECOW-300-S12-ECOW-300-L
139225139225189286189286227379227379260440260440
26462646284828482848284828482848
845423845423
1233616
1233616
1400700
1400700
1750875
1750875
103⁄4”
123⁄4”
141⁄2”
163⁄4”
54
88
118
163
MODEL ECO-F with Flanges
16
16
35
35
54
88
118
163
For larger sizes refer to the Expansion Joint Design Standards catalog or contact American BOA.
12
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
“HVAC-” - Expansion Joints 50 & 150 psig 600ºF
Bellows:Welding Ends:Flanges:
Pressure rating:Temperature rating:Test pressure:Number of cycles:
“HVAC” Expansion Joints
American BOA “HVAC” Expansion Joints are theeconomical solution to compensate for moderate tolarge thermal expansion in various piping systems(i.e., chilled or hot water, steam or condensate,coolants or hot gases). Designed for either 50 or 150psig, “HVAC” expansion joints are available indiameters from 3” through 24” with either weld endsor flanges. The highly flexible bellows allowsmovements in axial and lateral directions and/orangular rotation. The special Titanium stabilizedbellows material ensures resistance against manycorrosive media and environments.
HVAC-W HVAC-F HVAC-FL
SIZEEff.
Area[in2]
PRESSRATING
[PSI] AXIAL[IN.]
LATERAL[IN.]
ANGULAR[DEG.]
O/L[in.]
WT.[lb.]
O/L[in.]
WT.[lb.]
O/L[in.]
WT.[lb.]
MOVEMENT MODELHVAC-W
MODELHVAC-F
MODELHVAC-FL
3”[12.2]eff.
Area
4”[20.2]
50
150
50
150
1.15
2.29
1.08
1.47
1.29
2.58
0.99
1.62
S
L
S
L
S
L
S
L
0.34
1.36
0.31
0.93
0.3
1.21
0.23
0.79
15
15
15
15
15
15
15
15
9 1⁄2”
13”
9 1⁄2”
13 1⁄4”
9 1⁄2”
13”
9 1⁄2”
13 1⁄2”
5
5
5
6
8
8
8
9
6 3⁄8”
9 7⁄8”
6 3⁄8”
10 1⁄8”
6 5⁄8”
10 1⁄8”
6 5⁄8”
10 5⁄8”
16
17
17
18
27
28
28
29
6 7⁄8”
10 3⁄8”
6 7⁄8”
10 5⁄8”
7 1⁄8”
10 5⁄8”
7 1⁄8”
11 1⁄8”
16
17
17
18
27
28
28
29
SS 316 Ti / 321A 106 / A 53 Gr.BRFSO 150# per ANSI B 16.5A 10550 and 150 psig600º F75 & 225 psig>1000
AXIAL[LB/IN.]
LATERAL[LB/IN.]
ANGULAR[IN.LB/DEG.]
SPRINGRATE
571
286
571
966
543
271
1268
1240
969
128
1018
384
1471
194
3482
809
19
10
19
33
30
15
71
70
SERIES
13
SIZEEff.
Area[in2]
PRESSRATING
[PSI] AXIAL[IN.]
LATERAL[IN.]
ANGULAR[DEG.]
O/L[in.]
WT.[lb.]
O/L[in.]
WT.[lb.]
O/L[in.]
WT.[lb.]
AXIAL[LB/IN.]
LATERAL[LB/IN.]
ANGULAR[IN.LB/DEG.]
MOVEMENT MODELHVAC-W
MODELHVAC-F
MODELHVAC-FLSPRINGRATE
5”[30.8]
6”[42.5]
8”[70.1]
10”[105]
12”[145]
14”[176]
16”[229]
18”[286]
20”[349]
22”[418]
24”[494]
50
150
50
150
50
150
50
150
50
150
50
150
50
150
50
150
50
150
50
150
50
150
1.73
3.14
1.21
2.07
1.73
3.38
1.27
2.28
2.39
3.78
1.4
2.57
2.39
4.01
1.35
2.54
2.43
4.55
1.33
2.51
2.57
5.15
1.5
3.01
2.57
5.41
1.49
2.98
2.57
5.33
1.48
2.97
2.57
5.29
1.48
2.95
2.57
5.26
1.47
2.93
2.56
5.23
1.46
2.92
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
S
L
0.37
1.42
0.27
0.97
0.32
1.3
0.24
0.9
0.42
1.39
0.26
0.97
0.34
1.2
0.2
0.79
0.3
1.15
0.17
0.67
0.27
1.14
0.17
0.69
0.24
1.06
0.14
0.6
0.21
0.93
0.13
0.54
0.19
0.84
0.12
0.49
0.18
0.76
0.11
0.44
0.16
0.74
0.1
0.41
15
15
15
15
15
15
15
15
15
15
15
15
15
15
13.38
15
15
15
11.28
15
15
15
11.5
15
15
15
10.06
15
15
15
8.92
15
14.62
15
8.02
15
12.85
15
7.28
14.57
11.75
15
6.67
13.34
10”
14 1⁄2”
10 1⁄4”
14 3⁄4”
10”
14 1⁄2”
10 1⁄4”
14 3⁄4”
11”
16 1⁄4”
11 1⁄4”
16 3⁄4”
11”
16 1⁄4”
11 1⁄4”
16 3⁄4”
11”
16 1⁄4”
11 1⁄4”
16 3⁄4”
10 3⁄4”
16”
11”
16 1⁄4”
10 3⁄4”
16”
11”
16 1⁄4”
10 3⁄4”
16”
11”
16 1⁄4”
10 3⁄4”
16”
11”
16 1⁄4”
10 3⁄4”
16”
11”
16 1⁄4”
10 3⁄4”
16”
11”
16 1⁄4”
11
11
11
12
13
13
13
15
20
21
20
23
27
28
27
30
32
33
32
36
37
37
37
40
40
41
40
45
48
50
48
54
53
55
53
60
58
60
58
65
64
66
64
72
7 7⁄8”
12 3⁄8”
8 1⁄8”
12 5⁄8”
7 5⁄8”
12 1⁄8”
7 7⁄8”
12 3⁄8”
9”
14 1⁄4”
9 1⁄4”
14 3⁄4”
9 3⁄8”
14 5⁄8”
9 5⁄8”
15 1⁄8”
9 7⁄8”
15 1⁄8”
10 1⁄8”
15 5⁄8”
9 3⁄4”
15”
10”
15 1⁄4”
10 1⁄4”
15 1⁄2”
10 1⁄2”
15 3⁄4”
10 5⁄8”
15 7⁄8”
10 7⁄8”
16 3⁄8”
11”
16 1⁄4”
11 1⁄4”
16 3⁄4”
11 1⁄2”
16 3⁄4”
11 3⁄4”
17 1⁄4”
11 3⁄4”
17”
12”
17 1⁄2”
33
34
34
35
41
43
42
44
65
68
67
70
93
96
95
98
136
140
138
142
188
192
191
195
205
210
208
213
276
281
279
285
347
354
351
358
389
396
393
400
463
470
468
475
7 7⁄8”
12 3⁄8”
8 1⁄8”
12 5⁄8”
8 1⁄8”
12 5⁄8”
8 3⁄8”
12 7⁄8”
9 1⁄2”
14 3⁄4”
9 3⁄4”
15 1⁄4”
9 7⁄8”
15 1⁄8”
10 1⁄8”
15 5⁄8”
10 3⁄8”
15 5⁄8”
10 5⁄8”
16 1⁄8”
10 1⁄4”
15 1⁄2”
10 1⁄2”
15 3⁄4”
10 3⁄4”
16’
11”
16 1⁄4”
11 1⁄8”
16 3⁄8”
11 3⁄8”
16 7⁄8”
11 1⁄2”
16 3⁄4”
11 3⁄4”
17 1⁄4”
12”
17 1⁄4”
12 1⁄4”
17 3⁄4”
12 1⁄4”
17 1⁄2”
12 1⁄2”
18”
33
34
34
35
41
43
42
44
65
68
67
70
93
96
95
98
136
140
138
142
188
192
191
195
205
210
208
213
276
281
279
285
347
354
351
358
389
396
393
400
463
470
468
475
283
336
1563
1060
245
325
1617
998
255
396
2506
1453
312
407
3175
1781
592
358
3724
2090
520
387
3036
1518
590
380
3441
1721
659
424
4679
2340
728
468
5170
2585
580
513
5660
2830
924
557
6150
3075
905
257
4584
761
1090
346
6536
996
1236
459
10939
1575
2279
717
20759
2901
5866
880
33497
4687
6565
1206
1495
4467
9564
1529
52034
6504
13360
2131
86997
10855
18047
2874
117319
14638
25216
3773
153975
19211
32399
4841
197569
24651
24
28
134
89
29
38
192
117
49
75
491
282
91
117
931
520
239
143
1502
839
18
191
1495
717
372
243
2176
1088
520
338
3735
1867
702
456
5036
2518
981
599
6610
2830
1261
768
8481
4241
For larger sizes refer to the Expansion Joint Design Standards catalog or contact American BOA.
SERIES
14
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
“SRV” - Vent Connectors
Bellows:Welding Ends:
Flanges:
Shroud:
SS 321A 106 Gr.B / A 53 Gr.BStd. wallRFSO, 150#,Per ANSI B 16.5, A 105A 106 Gr.B / A 53 Gr.B
“SRV” Vent ConnectorsVent Connectors are engineered to withstand the turbulent and highvelocity flow that is typical for vent lines. American BOA “SRV” VentConnectors provide a completely closed venting system betweenthe pressure relief or safety valve and the silencer. American BOA“SRV” Vent Connectors eliminate the risk of uncontrolled dischargeof flow media inside a building which may occur if drip-pans areused and the back-pressure exceeds design predictions. AmericanBOA “SRV” Vent Connectors utilize multi-ply bellows technologythat is superior to any other bellows design in handling high fre-quency, flow induced and mechanical vibration. The compactdesign provides large movement capacity with the lowest possiblespring rates. This design reduces forces and moments at the valveand other equipment connections. Standard “SRV” bellows aremade of 321 Stainless Steel for enhanced corrosion resistance.
The “SRV” design also features a full-bore liner for unrestricted flowand a heavy wall housing that provides protection against damageand uncontrolled discharge of flow. A drain nozzle to removecondensate is standard.
SIZE
INLET OUTLET AXIAL
MOVEMENT SPRINGRATE
AXIALLATERAL LATERAL W
MODEL
FS
SHROUDO.D. W
LENGTH WEIGHT
FS W FS
PRESSURE
RATING
11⁄2”Eff.
Area[12.9]
2”[19.5]
2 1⁄2”
3
4
5
6
3 1⁄2”
4
5
6
8
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
95
95
95
95
95
154
154
154
154
154
19
19
19
19
19
45
45
45
45
45
6 5⁄8”
6 5⁄8”
6 5⁄8”
6 5⁄8”
6 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
29
29
29
29
27
26
26
26
26
24
33
33
33
33
29
30
30
30
30
26
54
54
54
54
46
74
74
74
74
62
65
67
73
76
73
91
93
96
97
106
1x2WSRV
1x3WSRV
1x4WSRV
1x5WSRV
1x6WSRV
2x3WSRV
2x4WSRV
2x5WSRV
2x6WSRV
2x8WSRV
1x2FSSRV
1x3FSSRV
1x4FSSRV
1x5FSSRV
1x6FSSRV
2x3FSSRV
2x4FSSRV
2x5FSSRV
2x6FSSRV
2x8FSSRV
150
150
150
150
150
150
150
150
150
150
+/-3.1
+/-3.1
+/-3.1
+/-3.1
+/-3.1
+/-2.5
+/-2.5
+/-2.5
+/-2.5
+/-2.5
15
SIZE
INLET OUTLET AXIAL
MOVEMENT SPRINGRATE
AXIALLATERAL LATERAL W
MODEL
FS
SHROUDO.D. W
LENGTH WEIGHT
FS W FS
PRESSURE
RATING
21⁄2”Eff.
Area[19.5]
3”[29.9]
4”[41.9]
5”[68.7]
6”[68.7]
8”[105.4]
10”[144.9]
12”[224.8]
3 1⁄2”
4
5
6
8
3 1⁄2”
4
5
6
8
4
5
6
8
10
5
6
8
10
12
6
8
10
12
8
10
12
14
10
12
14
16
12
14
16
18
20
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
0.5
154
154
154
154
119
119
119
119
119
119
102
102
102
102
102
103
103
103
103
103
103
103
103
103
94
94
94
94
110
110
110
110
116
116
116
116
116
45
45
45
45
45
71
71
71
71
71
64
64
64
64
64
127
127
127
127
127
127
127
127
127
178
178
178
178
317
317
317
317
460
460
460
460
460
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
8 5⁄8”
10 3⁄4”
10 3⁄4”
10 3⁄4”
10 3⁄4”
10 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
12 3⁄4”
14”
14”
14”
14”
16”
16”
16”
16”
20”
20”
20”
20”
20”
26
26
26
26
24
27
27
27
27
24
29
29
29
29
26
27
27
27
27
24
27
27
27
24
35
35
35
25
34
34
34
24
40
40
40
40
26
30
30
30
30
26
32
32
33
33
27
33
34
34
34
28
33
33
33
33
26
33
33
33
26
39
39
39
28
40
40
40
27
48
48
48
48
29
75
75
75
75
63
83
83
83
83
67
108
108
108
108
101
163
163
163
163
141
167
167
167
145
223
223
223
161
267
267
267
200
391
391
391
391
288
94
96
103
108
112
103
106
110
115
118
146
150
154
172
208
196
200
218
231
239
209
227
240
248
293
306
336
306
359
389
419
379
536
565
593
606
518
2.5x3.5WSRV
2.5x4WSRV2.5x5WSRV
2.5x6WSRV2.5x8WSRV3x3.5WSRV
3x4WSRV
3x5WSRV
3x6WSRV
3x8WSRV
4x4WSRV
4x5WSRV
4x6WSRV
4x8WSRV4x10
WSRV5x5
WSRV5x6
WSRV
5x8WSRV
5x10WSRV5x12
WSRV6x6
WSRV6x8
WSRV6x10
WSRV
6x12WSRV
8x8WSRV8x10
WSRV8x12
WSRV
8x14WSRV
10x10WSRV10x12WSRV10x14WSRV10x16WSRV
12x12WSRV
12x14WSRV12x16WSRV
12x18WSRV12x20WSRV
2.5x3.5FSSRV
2.5x4FSSRV2.5x5
FSSRV
2.5x6FSSRV2.5x8
FSSRV3x3.5
FSSRV3x4
FSSRV3x5
FSSRV
3x6FSSRV
3x8FSSRV
4x4FSSRV
4x5FSSRV
4x6FSSRV
4x8FSSRV
4x10FSSRV
5x5FSSRV
5x6FSSRV
5x8FSSRV
5x10FSSRV
5x12FSSRV
6x6FSSRV
6x8FSSRV
6x10FSSRV
6x12FSSRV
8x8FSSRV
8x10FSSRV
8x12FSSRV
8x14FSSRV
10x10FSSRV10x12
FSSRV10x14
FSSRV10x16
FSSRV
12x12FSSRV
12x14FSSRV12x16
FSSRV
12x18FSSRV12x20
FSSRV
150
150
150
150
150
125
125
125
125
125
110
110
110
110
110
90
90
90
90
90
90
90
90
90
65
65
65
65
60
60
60
60
55
55
55
55
55
+/-2.8
+/-2.8
+/-2.8
+/-2.8
+/-2.8
+/-3.2
+/-3.2
+/-3.2
+/-3.2
+/-3.2
+/-3.8
+/-3.8
+/-3.8
+/-3.8
+/-3.8
+/-4.0
+/-4.0
+/-4.0
+/-4.0
+/-4.0
+/-4.0
+/-4.0
+/-4.0
+/-4.0
+/-4.7
+/-4.7
+/-4.7
+/-4.7
+/-4.2
+/-4.2
+/-4.2
+/-4.2
+/-4.7
+/-4.7
+/-4.7
+/-4.7
+/-4.7
Larger sizes are available upon request.
16
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
“BCT” - Flexible Bellows Connectors 225 psig 70ºF
Bellows:Flanges:
Control rods:Pressure rating:Temperature rating:Test Pressure:
Multi-ply SS 304Plate flanges drilled perANSI B16.5 - 150# - C.S.CS225 / 210 psig70 / 360ºF335 psig
“BCT” Flexible Bellows Connectors
American BOA “BCT” flexible Bellows Connectors are thepreferred solution to protect pumps and compressors in pipingsystems from stress, strain and vibration. “BCT” connectors utilizemulti-ply bellows design for superior vibration control andmaximum reduction of noise. The design allows for thecompensation of misalignment and supports easy and quickinstallation.
BCT connectors ensure minimum loads on suction and dischargeflanges and enhance the life expectancy of mechanical equipmentand reduce maintenance. The ability to dampen the noise levelthroughout the piping system makes “BCT” flexible BellowsConnectors the preferred choice for pump installations inresidential, office and public buildings.
SIZE MODEL #@ 70ºF @ 360ºF
OVERALLLENGTH
[In.]
LIVELENGTH
[In.]
FITTINGLENGTH
[In.]
WT.[Lb.]
EFFECTIVEAREA[In.2]
WORKING PRESSURE
22 1⁄2
3456810121416
BCT-50BCT-65BCT-80BCT-100BCT-125BCT-150BCT-200BCT-250BCT-300BCT-350BCT-400
225225225225225225225225225225225
210210210210210210210210210210210
4 3⁄84 3⁄84 3⁄84 5⁄84 7⁄8
55 7⁄86 1⁄46 5⁄89 1⁄210
3 1⁄83 1⁄83 1⁄83 1⁄83 3⁄83 1⁄23 7⁄84 1⁄44 5⁄8
77 1⁄2
5⁄85⁄85⁄83⁄43⁄43⁄4111
1 1⁄41 1⁄4
10.514.516.52632376586112183217
6.96.98.815.123.533.259.393.5134171220
Larger sizes are available upon request.
17
INSTALLATION INSTRUCTIONS
American BOA flexible metal products are engineered to meet the special requirements of the Light Industrialmarkets. They are designed to withstand common handling, shipping and installation practices while provid-ing superior flexibility to compensate for the thermal growth of piping systems and to control vibration ofrotary equipment. They are extremely safe and increase plant reliability. The following guidelines shall beused to ensure the proper function of expansion joints, expansion compensators or other flexible metalproducts during service.
• Check the product for any visual damage, especially for dents in the bellows, broken or bent shipping barsor preset tabs.
• Store the product in a clean and dry area, ensure that no obstacles are jammed between bellowsconvolutions or have entered the inside of the expansion joint or compensator.
• Protect the bellows against weld splatter whenever welding near adjacent piping.
• Do not attempt to strike an arc on any part of an expansion joint, especially the bellows.
• When installing expansion joints with fixed flanges, do not attempt to torque the bellows if the boltholes donot align with the mating flanges. It is a good practice to weld one mating flange to the pipe after theexpansion joint is bolted to this flange or utilize expansion joints with a van stone flange.
• Exercise caution when applying torque to the bolts of flanged expansion joints to avoid damaging thebellows. It is good practice to have the head of the bolts facing the bellows and the nuts facing the matingflanges.
• Do not use expansion joints to compensate for excessive piping misalignment unless explicitly permitted.
• Do not remove bellows covers, shipping bars or preset tabs before the installation is completed and allpipe guides, supports and anchors are firmly installed and secured.
• Do not remove shipping bars, preset tabs or temporary bellows covers until all pipe anchors, supports andguides are in place and secured.
• Never exceed the permissible test pressure. Avoid pressure peaks that may occur when filling the pipingsystem too rapidly.
• Avoid water and steam hammer.
Handling and installation instructions are included in all American BOA flexible product shipments. Ensurethat the personnel handling and installing the products are aware of these guidelines. Installed correctly,American BOA expansion joints, expansion compensators, SRV’s and flexible connectors will ensure safe andreliable plant operation with a life expectancy often surpassing other equipment.
Typical installation ofaxial expansion joints
AMERICAN BOA, INC.STANDARD INDUSTRIAL EXPANSION JOINT SERIES
Other American BOA flexible products
American BOA designs and manufactures a large variety of flexible metal products that exceed thecontents of this brochure. Our manufacturing capabilities for metal bellows expansion joints rangefrom the smallest diameters through 20 feet for pressure exceeding 1000 psig. Many of these heavyindustrial expansion joints operate in systems with flow temperatures above 1500ºF. Whether utilizedin the Power Generation, Petrochemical, Pulp and Paper, Chemical, Water Treatment or FoodProcessing Industries, American BOA flexible metal products provide reliable solutions whereverthermal expansion and vibration in piping systems and equipment are of concern.
Request more information and catalogs for the followingAmerican BOA expansion joint products:
• Engine Exhaust Products• Industrial Expansion Joint Products
• Rubber Expansion Joints
18
AMERICAN BOA, INC.STANDARD INDUSTRIALEXPANSION JOINT SERIES
Sales office USA
American Boa Inc.P.O. Box 1301Cumming, Ga 30028Tel. 770.889.9400Telecopier: 770.781.3968Email: Homepage: www.americanboa.com
