Hyspan designs and manufactures a comprehensive selection of products for power piping applications. Both equipment and balance-of-plant expansion joints and hoses are supported. Most applications involve thermal expansion or contraction. Other needs require vibration isolation and relative motion compensation for tanks, building and structure settlement, seismic isolation, structural support, and flow measurement.  

For more than a half-century, we have designed, engineered, manufactured, tested, and acquired various expansion joint technologies. This unique and extensive experience provides Hyspan exceptional capabilities in this critical industry.  

Hyspan’s complete line of products includes metal bellows expansion joints, packed expansion joints, ball joints, metal hoses, and accessory products such as pipe guides, strut joints, hydraulic vibration snubbers, and flow measurement venturis.  

Although the product selected can be a standard Hyspan configuration or an adaptation of a standard, many power applications are custom designed to meet specialized requirements and demanding customer specifications. Hyspan can meet challenging engineering problems and manage major contracts.  

Hyspan is an ISO 9001:2015 registered company with a quality system that supports requirements of the piping and boiler pressure vessel codes. These include popular ASME B31.1, ASME B31.3, and ASME Section VIII Division 1 codes. European Pressure Equipment Directive (PED) standards, with CE markings, can be supported in many applications. Canadian Registration Number (CRN) support is available. 

Nondestructive testing and inspections are performed by company personnel including radiography. Quality personnel are certified to the standards of the American Society of Nondestructive Testing (ASNT). Hyspan is a member of the Expansion Joint Manufacturers Association (EJMA ®). A copy of our Hyspan EJMA ® certificate is available. 

Combined Cycle
Combined Cycle
Waste to Energy
Waste to Energy
Concentrated Solar Power
Concentrated Solar Power


Series 1500 Hyflex Bellows Expansion Joints

Series 1500 Hyflex Bellows Expansion Joints tbkg 2in

1507-1510 Hyflex Single Bellows Exp Joint
1511-1512 Hyflex Uni Bellows Exp Joints
1511IS Inline Seismic Uni Bellows Exp Joints
1507HG-1510HG Hyflex Single Hinge/ Gimbal Bellows
Exp Joints

Series 2500 Low Pressure Round & Rectangular Bellows Expansion Joints

2504-2507 Low Pressure 1 Ply Bellows Joint
2524-2527 Low Pressure 1 Ply All 304/304L Bellows Joint
2534-2537 Low Pressure 1 Ply All 316L Bellows Joint
2509-2511 Low Pressure 3 Ply Bellows Joint
2529-2531 Low Pressure 3 Ply A 304/304L Bellows Joint
2539-2541 Low Pressure 3 Ply All 316L Bellows Joint
2554-2555 HySeal Low Pressure 1 Ply Penetration Seal Bellows Joint
25RECT Low Pressure Rectangle Bellows Expansion Joint

Series 3500 External Pressure Bellows Expansion Joints

3501-3506 Single/Dual 3 Ply Ext. Pres. Exp. Joints
3501PB-3502PB Single 3 Ply Pres. Balanced Ext. Pres. Exp. Joints
3501IS-3502IS Single Inline Seismic & Settling Ext. Pres. Exp. Joints
3501SRV-3502SRV Safety Relief Valve 3 Ply Ext. Pres. Vent Exp. Joint

Series 4500 Braided Hose Connectors

4501-4505 Straight Braided Hose Connectors
45V1-45V8 V-Flex Seismic Connector
Anaconda Vibration Eliminators with Copper Ends
Universal Metal Hose Braided Hose, Strip Wound, and Assemblies
Anaconda Metal Hose and Braided Connectors

Series 6500 Perma-Pax Slip Expansion Joints

6501-6506 Packed Slip Single & Dual Expansion Joints

Series 6800 Flexible Strut Joints/Vibrasnubs


Flexible Strut Joints
Vibrasnub Hydraulic Vibration Snubbers

Series 9500 Alignment Guides

Pipe Guide, Steel & Stainless Steel, 3/4″ to 14″ NPS
Tube Guide, Copper, 3/4″ to 4″ NOM

ASME Section VIII Heat Exchanger Bellows and Slip Joint

CE/PED Joint

Abrasion Service Bellows and Slip Expansion Joint

Heavy Wall Fabricated Acid Plant .120/.135” Duct Expansion Joint

Heavy Wall Flanged & Flued Pipe Expansion Joint

Safety Relief Valve Bellows Seal

Custom Made 1” To 20’ Engineered Bellows Expansion Joint

Anaconda Metal Bellows Expansion Joints

Flexible Metal Bellows Expansion Joints