Series 9500 Alignment GuidesHyspan low-pressure multiply bellows joints for gaseous applications including exhaust, air, MRI Cryogenic Vent, Digester gas, Process Air, and others. Standard designs include 304 stainless steel bellows and carbon steel end fittings. Liners, Shrouds, Rods, Hinges, Gimbals, and other options are available.
2529-2531 Low Pressure 3 Ply All 304/304L Bellows Joints
Information at a Glance
Series
2500 Low Pressure Round & Rectangular Bellows Expansion Joints
Material
Steel
Size
4 – 240 in. / 100-6000 mm
Pressure
≤15 PSI / 1 Bar
Canadian Registration
This product is registered throughout Canada under
CRN 0D9278.59870YTNADD3
Other Products
Product Description
Technology & Advantages
All Series 2500 Laminated Bellows Expansion Joints are designed for a maximum pressure (including test pressure) of 15 psig and a full vacuum. They are intended for applications such as engine exhaust, fan connections, vents and other very low pressure applications. The design temperature varies with the construction. The materials of construction for standard assemblies are: type 304 stainless steel bellows, van stone ends and flow liners; ASTM A-36 carbon steel plate flanges and angle flanges, and ASTM A-53 standard weight carbon steel pipe weld ends. Optional materials are available including the substitution of stainless steel for flanges and pipe. Recommended design temperatures are 775ºF for Types 2509 & 2511 with carbon steel fittings, 1100ºF for Type 2510 with carbon steel backup flanges and 1250ºF for all configurations if the component parts are stainless steel.
Design Features
Common Applications
The lateral offset installation illustrated is a typical application of a Series 2500 Laminated Bellows Expansion Joint installed on an engine exhaust, fan intake or discharge. The high flexibility and internal damping provided by the laminated construction permits absorption of lateral movement from thermal expansion or mechanical motion. Refer to Column 5 of the Design Data for the maximum lateral off-set of each configuration. For applications of this type it is good practice to add Tie Rods to the expansion joint – see Tie Rods below.
Lateral Offset
Laminated Bellows Expansion Joints can also be installed in axial applications as shown in the axial travel illustration. The maximum Axial Compression and Axial Extension for each configuration is given in Columns 3 & 4 of the Design Data. Most Series 2500 applications do not require the amount of rated axial extension. For these applications the expansion joint can be ordered preset if additional travel is needed. As an example a 3″ joint (-040-5) rated for 5″ compression factory cold sprung 1″ (extended 1″) can be rated for 5″ compression. The allowable axial extension will be reduced from 2.5″ to 1.5″.
Axial Travel
2509 Fixed Flange
2510 Van Stone Flange
2511 Weld End
Design Data
| Nominal Size | Part Number | Axial Compression (inches) | Axial Extension(inches) | Lateral Off-Set(inches) | Axial Spring Rate (lb./in.) | Lateral Spring Rate (lb./in.) | Part No. 2529 & 2530 Overall Length (inches) |
Part No. 2529 & 2530 Weight (lbs.) |
Part No. 2531 Overall Length(inches) |
Part No. 2531 Weight (lbs.) |
|---|---|---|---|---|---|---|---|---|---|---|
3 |
040-3 040-5 |
3.00 5.00 |
1.50 2.50 |
1.79 5.13 |
159 78 |
75 12 |
9.0 14.0 |
16 |
11.0 16.0 |
7 |
4 |
048-3 048-5 |
3.00 5.13 |
1.50 2.57 |
1.40 4.14 |
131 78 |
100 20 |
9.0 14.0 |
22 |
11.0 16.0 |
8 |
5 |
055-3 055-5 |
3.00 5.13 |
1.50 2.57 |
1.16 3.41 |
153 91 |
172 35 |
9.0 14.0 |
22 |
11.0 16.0 |
11 |
6 |
060-3 060-5 |
3.00 5.25 |
1.50 2.63 |
1.00 2.94 |
178 94 |
278 51 |
9.0 14.0 |
28 |
11.0 16.0 |
14 |
8 |
067-3 067-5 |
3.00 5.31 |
1.50 2.66 |
0.78 2.30 |
162 94 |
419 84 |
9.0 14.0 |
43 |
11.0 6.0 |
18 |
|
10 |
074-3 074-5 |
3.00 5.31 |
1.50 2.66 |
0.63 1.87 |
191 112 |
752 151 |
9.0 14.0 |
50 |
11.0 16.0 |
30 |
|
12 |
080-3 080-5 |
3.25 5.63 |
1.63 2.78 |
0.55 1.62 |
134 76 |
776 149 |
9.0 14.0 |
65 |
12.0 17.0 |
35 |
|
14 |
081-3 081-5 |
3.25 5.63 |
1.63 2.82 |
0.50 1.49 |
125 72 |
873 172 |
9.0 14.0 |
85 |
12.0 17.0 |
45 |
|
16 |
082-3 082-5 |
3.25 5.63 |
1.63 2.82 |
0.44 1.31 |
131 76 |
1179 233 |
9.0 14.0 |
85 |
12.0 17.0 |
52 |
|
18 |
083-3 083-5 |
3.25 5.63 |
1.63 2.82 |
0.40 1.17 |
139 81 |
1558 309 |
9.0 14.0 |
100 |
12.0 17.0 |
61 |
Tie rods are available as an option on Series 2500 Laminated Bellows Expansion Joints. They react the pressure thrust in piping and ducting that is not anchored such as the lateral offset application illustrated above. They may also function as Limit Rods. Limit rods do not react the pressure thrust in service but they are designed to react the pressure thrust in the event of an anchor failure. Their main function is to limit the axial extension and compression of the bellows to the rated values. Hyspan normally refers to both tie rods and limit rods as Tie Rods but the factory settings are important – factory settings as Tie Rods do not permit axial extension but limits compression to the rated value of the bellows. Factory settings as Limit Rods will permit axial extension and compression in accordance with the rated travel specified in the Design Data.
Flow liners or internal sleeves are optional features that are available for all configurations. Liners provide a means of isolating the bellows element from direct contact with the flow and as a result eliminating flow induced vibration, minimizing pressure loss and creating dead air space between the bellows that insulates the bellows. Hyspan installed flow liners follow the recommendations outlined in the Standards of the Expansion Joint Manufacturers Association (EJMA) summarized as follows.
Flow liners are recommended for:
- Gas applications exceeding 4 ft./sec./inch of diameter up to 6″ NPS
- Gas applications exceeding 25 ft./sec. over 6″ NPS.
- Liquid applications exceeding 2 ft./sec./inch of diameter up to 6″ NPS.
- Liquid applications exceeding 10 ft./sec. over 6″ NPS.
- All applications when flow turbulence is generated within 10 diameters from the expansion joint.
The minimum thickness of a stainless flow liner is:
| Nominal Diameter(NPS) |
Minimum Thickness |
| 3” 4”-10”12”-18” |
0.024 0.0360.048 |
These values must be increased when:
- The flow liner length, L, exceeds 18″. Multiply the tabulated values by the factor,.
- The velocity, V, exceeds 100 ft./sec. Multiply the tabulated values by the factor,.
- When the flow is extremely turbulent such as downstream from valves, tees and elbows. Multiply the calculated velocity by 4 to determine if the velocity exceeds 100 ft./sec.
- If the liner length exceeds 18″ and the velocity exceeds 100 ft./sec., apply both factors.
There are special circumstances involving the use of flow liners:
- Standard liners are rigidly attached on the upstream end of the expansion joint and open on the downstream end. If reverse flow conditions exist, the liner thickness must be very heavy gauge or a telescoping design should be used.
- If the expansion joint is installed is a vertical run and the flow is upward, drain holes should be added at the lowest point of the liner to avoid trapped liquid.
- Unless a special oversize bellows design is used, the flow liner will intrude into the pipe or duct flow path. If the expansion joint motion is axial only this intrusion will be minimal, and the liner inside diameter may be comparable to the adjacent pipe or duct.
- If there is lateral or angular motion the gap between the liner outside diameter and the bellows inside diameter must be great enough to allow for this movement – see illustration.
- Connectors designed for axial compression with flow liners must be designed so that the liner does not extent beyond the end of the joint – see illustration.
Ordering Information
Refer to the illustrations (2509, 2510 & 2511) above for the configuration required. Refer to the Design Data table for the rated motions, spring rates, lengths and weights.
Example:
12″ nominal diameter
Single fixed flange,
Standard bellows material, 304 stainless steel
Standard Flange Material, A-36 carbon steel
3.0″ axial compression, 1.5″ extension
Flow Liner
Installation Procedure
Operating Conditions: Series 2500 Laminated Bellows Expansion Joints are designed for applications where the pressure including tests does not exceed 15 psig. The design temperature varies with the configuration and materials of construction. Consult the purchase specification for the design temperature and the rated travel of the product purchased. Be certain that the system operating conditions and test conditions do not exceed the rated values.
Guides, Supports, Anchors: Series 2500 Laminated Bellows Expansion Joints are light weight construction. Guides, supports and anchors are important to prevent damage. Refer to the installation drawings for the correct location.
Flow Direction:The flow direction can be from either direction for Series 2500 expansion joints that do not include a flow liner. The flow direction for expansion joints with flow liners is from the fixed (welded) end to the free end and indicated on the exterior. Confirm that the joint is oriented correctly.
Shipping Restraints: External restraints are installed at the factory to ensure installation at the correct length and alignment. They are painted yellow and labeled – Shipping bars, remove after installation. Leave these restraints installed until after the installation of the expansion joint is complete – but they must be removed prior to pressure testing and operating the system. CAUTION: Shipping restraints may be installed by welding. Provide protection for the bellows element from cutting or grinding during removal.
Tie Rods: Tie rods, limit rods and control rods are devices that limit the travel of the expansion joint. They are available as an option on Series 2500 Laminated Bellows Expansion Joints. If they are included, be certain that the installation allows the design movement of the expansion joint.
Post Installation Inspection
1. Inspect the expansion joint for damage with close attention to the bellows element.
2. Is the expansion joint installed at the correct location; are the anchors, guides and supports installed in accordance with the system design?
3. Are the guides and supports free to allow the movement of the expansion joint?
4. Is the flow direction correct if a flow liner is installed?
5. Have the shipping restraints been removed?
Hyspan products are available from Sales Representatives and Distributors, or they can be purchased direct from the factory. The minimum factory order for open account customers, COD shipments, or bank card sales is $100.00 (USD). All major credit or debit cards are accepted. The minimum order for new account applicants is $100.00. Our Confidential Credit Application can be downloaded and forwarded to Hyspan for processing. All orders are subject to the following Terms and Conditions, and the above warranty applies to all material. Please read these documents.
Confidential Credit Application (13.9 KB), can be completed on line.
Downloads
General Downloads
- Catalog
- Approval Submittal
- Specifications
- Installation Instructions
- Warranty