How to select the proper rubber expansion joints

To select the proper expansion joint, consider:

Pipe size
Pumped medium: type of liquid, gas, or vapor in system Temperature range
Pressure/vacuum range
Movements needed
Environment: degree of exposure to:

› Weathering › Sunlight
› Liquids
› Gases

› Oil
› Open flame › Chemicals
› Other

› Vapors
Installed face-to-face dimensions
Degree of pipe misalignment
Drilling: if other than standard 125Ib. ANSI, determine:

› Flange O.D.
› Bolt circle
› Number of bolt holes

› Diameter of hole Need for retaining rings Need for control units

› Recommended for use with most expansion joints

› Must be used in cases of insufficient pipe support Need for special construction