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U.S. Bellows U.S. BELLOWS, INC.
METALLIC EXPANSION JOINT CATALOG
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Technical
 
U.S. Bellows Request for Quotation

PIPE GUIDE SPACING

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Pipe guides are necessary to assure that the thermal expansion of the pipeline is properly directed into the pipe expansion joint and to prevent buckling of the line. Additional guides located adjacent to the pipe expansion joint are necessary because of the inherent flexibility of the bellows and the compressive loading on the pipe caused by the pressure thrust of the pipe expansion joint.

The first guide must be located within a distance of four pipe diameters from the pipe expansion joint and the second guide within fourteen pipe diameters of the first guide. Additional guides should be located in accordance with the Pipe Guide Spacing Chart shown below for standard weight carbon steel pipe or calculated from the following formula:

Where L = maximum intermediate guide space, (feet)

E = modulus of elasticity of pipe material, (psi)

I = moment of inertia of pipe, (in4)

P = design pressure, (psig)

a = bellows effective area, (in 2)

= bellows spring rate, (lb/in)

= axial stroke of bellows, (in)

Note: When a bellows is compressed in operation, use when extended, use

pipe guide table

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Contact Us: +1 (281) 241-9418 Toll Free: (855) 591-0906 Fax: +1 (713) 731-8640 sales@usbellows.com
Our Parent Company: Piping Technology Pipe Supports, Pipe Clamps, Pipe Hardware & Insulated Pipe Shoes
Fellow Subsidiaries: Sweco Fab: ASME Vessels, Pig Launchers, Duct Work, Strainers & Spectacle Blinds
 Pipe Shields: Pre-Insulated Pipe Supports, Slides, Guides & Anchors

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