We recommend the use of furnace bags to seal high temperature tubes that penetrate the furnace floor.
Read MoreTag: faq
How do you remove an expansion joint from a pipeline?
In order to remove an expansion joint from a pipeline you must first shut off the fluid or gas flowing through the piping system. Then you must install braces across the bellows so that the expansion joint does not move. The expansion joint can then be removed by unbolting the flanges or cutting the expansion joint out of the pipeline.
Read MoreHow do you order an expansion joint?
As a minimum the following information should be provided when ordering an expansion joint:
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Size of the line.
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Design pressure.
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Design temperature.
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Design movements and required cycle life.
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Overall length requirement, if any.
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Type of end connections.
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Bellows material.
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Pipe material.
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Flange specification and material.
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Type of expansion joint.
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Accessories.
How do you decide the number of convolutions for a bellows?
The number of convolutions is based upon EJMA design formulas for bellows.
Read MoreHow do you connect duct pipe with expansion joints?
Connecting duct pipe with expansion joints can be accomplished by using angle iron flanges, weld bands or butt welding.
Read MoreHow do you attach a copper tube with a bellows?
A copper tube can be attached by brazing or soldering the tube to the bellows.
Read MoreHow do you anchor and guide an expansion joint on elevated pipe?
The anchoring and guiding of any expansion joint system would be per EJMA standards. Elevated piping systems will usually use some type of tied expansion joint to eliminate main anchors.
Read MoreHow do you adjust pipe expansion joint tie rods?
Tie rods on expansion joints are factory set in the manufacture process and should not be adjusted in the field.
Read MoreHow do the bellows flex when you have a solid rod connecting each end together?
The flow end bellows will compress and the balancing bellows will extend because they are connected by the rods.
Read MoreHow do I insulate large piping expansion joints?
An external cover can be provided as an accessory to expansion joints so that insulation can then be placed over the expansion joint unit.
Read MoreHow do I change a steam expansion joint?
The expansion joint can be replaced by an expansion joint of a similar design in the cold condition (when the plant is shut down). Shipping brackets should be placed on the expansion joint before un-flanging or cutting the expansion joint from the system.
Read MoreHow does one determine the design life of a particular bellow as opposed to cycle life?
Design life is fatigue life which is also the cycle life. They are all the same thing.
Read MoreHow does an expansion joint operate in a furnace?
Expansion joints are not installed inside furnaces due to the extremely high temperatures of the environment and the piping system. Expansion joints will typically be found in the piping coming in and out of the furnace.
Read MoreHow does an expansion bellows function?
A bellows functions by compressing or extending according to the axial motion that is required in the piping system.
How close should the expansion joint be set to the anchor?
The expansion joint should be located as close as possible to the main anchor. The first guide should be 4 pipe diameters from the expansion joint. The second guide should be 14 pipe diameters from the first guide.
Read MoreHow are the telescoping liner and liner seal installed?
They are installed before the fabric belt installation. Telescoping liners are welded on each side of the expansion joint, either on inner diameter base of flange or inner diameter of pipe. Liner seal is held by clips that are also welded on the inner diameter of the liners.
Read MoreHow are the seals retained?
Seals are retained with clips and welded to the inside diameter of the liner.
Read MoreFor field installation work do you have tools to punch holes in the expansion joint? Is it a mechanical or hydraulic punch?
Holes should never be punch on or in expansion joints.
Read MoreFor a fabric expansion joint, what does the joint frame take the place of?
The joint frame takes the place of the stiffener flange.
Read MoreDo you provide lifting lugs and/or lift points to be used during field installation?
Yes we do provide lifting lugs. Whether or not we provide them depends upon the size and weight of the unit.
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