Expansion Joints

Product Details:

A Universal Expansion Joint is a type of metallic expansion joint that consists of two bellows connected by a center pipe or spool piece. It is designed to absorb large axial, lateral, and angular movements in a piping system.

• Two bellows with an intermediate pipe
• Absorbs multiple movements (axial, lateral, and angular)
• No restraint on pressure thrust unless provided with control rods or tie rods
• Commonly used in piping systems where large movements occur

1. Unrestrained Universal Expansion Joint – Absorbs large lateral movements but requires anchors and guides.
2. Tied Universal Expansion Joint – Incorporates tie rods to eliminate pressure thrust while allowing lateral movement.
3. Gimbal or Hinged Universal Expansion Joint – Provides controlled movement with structural supports.

• Steam, gas, and liquid pipelines
• HVAC ducting systems
• Power plants
• Chemical and petrochemical industries.

Product Details:

An Inline Pressure Balanced Expansion Joint is a specialized type of expansion joint designed to absorb thermal expansion, contraction, and small lateral movements while maintaining a balanced pressure system. It is commonly used in pipelines where axial movement needs to be accommodated without transferring excessive forces to the anchors or surrounding structures.

• Pressure Balanced Design: It counteracts the pressure thrust caused by internal pressure, reducing the need for heavy anchoring.
• Axial Movement Absorption: It absorbs thermal expansion and contraction along the pipeline.
• Minimal Reaction Forces: The inline pressure-balanced design ensures that forces transferred to the adjacent equipment or anchors are minimal.
• Bellows Configuration: Usually consists of multiple bellows elements with a balancing bellow connected by tie rods or an internal balancing system.

• The main bellows absorb the thermal expansion in the pipeline.
• The balancing bellows, connected through a system of tie rods or piping, counteract the pressure thrust.
• The result is that only the spring force of the bellows acts on the pipeline, preventing excessive loads on the fixed points.

• Steam and hot fluid pipelines
• Power plants
• Chemical and petrochemical industries
• Refinery and process piping systems
• HVAC and district heating systems