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What is angular rotation on a fabric expansion joint?

The twisting of one side of the duct about an axis perpendicular to the longitudinal axis.

What is axial extension on a fabric expansion joint?

The increase in the breach opening along the axis of the duct. In certain configurations, the duct thermal expansion may ...Continue Reading

What is the breach opening for on fabric expansion joints?

What is axial compression on a fabric expansion joint?

The reduction in the breach opening along the axis of the duct. This is usually a result of thermal expansion ...Continue Reading

What is a mating flange on a fabric expansion joint?

It is a structural angle or channel that is welded to the end of the ducting facilitate bolting or welding ...Continue Reading

When do we use a rubber molded expansion joints?

The rubber molded expansion joint would be used for water services or applications with low temperature.

What does installed length refer to in a fabric expansion joint?

The installed length is the overall face-to-face length of the expansion joint to be installed.

Is there any other type of high temperature material that can be used other than metal?

We can also do fabric expansion joints but that would be for a very low-pressure application.

What fabric is used in manufacturing expansion joints?

The fabric is comprised of various layers: Inner layer: Comprised of highly thermal and abrasive resistant fabric material. It is usually used ...Continue Reading

For pipe stress analysis purposes, are there detailed engineering data on the lateral, axial, bending, and torsional stiffness’s of your fabric expansion joints?

The fabric joints do not have stiffness values as the metallic bellows do.

What is the maximum pressure for a fabric expansion joint?

The maximum pressure for fabric expansion joints is 100 inches of water or 3 PSIG (pounds per square inch).

Are neoprene and rubber expansion joints good for high temperature apps (600 deg. F)?

These expansion joints are not a good solution for high-temperature applications. The neoprene tends to burn at approximately 250 deg. F.

How many layers are in a non-metallic expansion joint?

The number of layers or plies is dependent upon the design conditions and we usually limit non-metallic expansion joints to two or ...Continue Reading

Do you manufacture fabric joints in any other material beside PTFE?

We do manufacture fabric expansion joints with other types of materials if the customer specifies it. Please see some of ...Continue Reading

For rubber bellows in CAESAR, do we need to specify any stiffness, since it is typically low?

Yes, the rubber expansion joints do have spring rates and that are required to be input into the stress model.

Do externally pressurized bellows need anchors for thrust load?

Yes, an externally pressurized expansion joint requires that the piping system be anchored.

What is the max axial deflection you can get on 8″ externally pressurized expansion joint?

We can allow for a total of 16″ of axial compression with a double x-flex expansion joint with an intermediate anchor base ...Continue Reading

Can we use the externally pressurized expansion joint in a floating roof fuel tank rain drain system?

You can use externally pressurized expansion joints in this application provided that the piping is anchored, supported, and guided correctly.

What are the different types of expansion joints?

Designing complex piping networks requires selecting appropriate flexible components to accommodate thermal expansion and mechanical vibration. Engineers must evaluate various ...Continue Reading

When cycle testing an expansion joint, what was the length of the stroke?

When cycle testing, the length of stroke is from neutral position to the compressed movement and back to neutral position of ...Continue Reading