The spring rate is equal to the spring rate of both flow bellows plus the spring rate of the balancing bellows.
What’s the typical spring rate for a 20″ pressure balanced expansion joint?
August 6, 1990
Tag: faqs
For a higher pressure system, how do you absorb pipe axial displacement without pressure thrust going to equipment with use of the expansion joint?
By using an in-line pressure balanced expansion joint.
For rubber bellows in CAESAR, do we need to specify any stiffness, since it is typically low?
July 31, 1990
Yes, the rubber expansion joints do have spring rates and that are required to be input into the stress model.
What’s the typical spring rate for a 20″ pressure balanced expansion joint?
The spring rate is equal to the spring rate of both flow bellows plus the spring rate of the balancing bellows.
What’s the typical spring rate for a 20″ pressure balanced expansion joint?
July 30, 1990
The spring rate is equal to the spring rate of both flow bellows plus the spring rate of the balancing bellows.
How do you design universal bellows with two different sizes?
The preferred method to design universal expansion joints would be to use a larger diameter bellows and use a reducer at the end of the expansion joint. This would ensure angular rotation and axial movement between the two bellows.
While tie-rods may stabilize the expansion joint from sideways displacements does it not restrict the joint from thermal growth and thus reduce the functionality of the expansion joint?
The expansion joint is designed to accommodate all the needed displacements. The tie-rods are part of the expansion joint and designed to absorb all the specified displacements.
When is a universal expansion joint preferred over a single expansion joint?
Universal expansion joints are usually used when there is large lateral motion.
