• Externally pressurized expansion joint
• Allows 3” of compression and .5” of extension
• Features nickel plated internal guides for quiet operation
• Rugged design protects the bellows
• Available in .75” through 4” in flanged or weld ends, and .75” through 3” with MPT ends

• Externally pressurized expansion joint
• Allows 3” of compression and .5” of extension.
• Features nickel plated internal guides for quiet operation.
• Rugged design protects the bellows.
• Available in .75” through 3” with sweat ends.

• Bolt on anchor clamps for riser applications.
• Easy to install, no welding required.
• Available in sizes 2” to 8”

• Urethane slide type guide to isolate noise and vibration.
• Isolates 96% of pipe-borne noise from structure.
• 5” movement standard
• Weld on and clamp on styles available

• Modular Riser Guide for pipe risers
• Combination of a pipe guide and water stop
• Features mechanical interlocking rubber links that isolates 52% of noise and vibration.
• Unlimited axial movement
• Easiest and fastest installation of any guide

WHITE PAPER: The modern skyscraper has been around for over a century. Like other elements of our built environment, the skyscraper can only exist because of other innovations in building technology, namely steel frame construction and safe elevators. Even though we have figured out how to build strong, tall structures and safely move the people inside, there are still the challenges of heating and cooling the building, moving fresh water in and dirty water out, providing fire protection and electricity. Defying gravity adds another twist to the challenges of providing services within tall buildings. This article will introduce some basics of pipe riser design and performance, explain some considerations in using different expansion joints in pipe risers, and briefly describe some of the codes and standards regarding guiding and supporting risers.