Pipe Guides and Anchors

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Style IV Spider Type Guide

  • Available in sizes 1” through 24”
  • 4” movement standard, 12” movement model available
  • For carbon steel or copper pipe
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Riser Anchor Clamp

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

  • Available in sizes 1” through 24”
  • 4” movement standard, 10” movement model available.
  • Features a PTFE bearing pad
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Model PGQ Riser Pipe Guide

  • 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
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Modular Riser Guide

  • 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
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PG-PRE, Insulated Spider Guide

  • Available in sizes 1” through 24”
  • 4” Movement standard, 10” movement model available.
  • Features water and vapor resistant Calcium Silicate insulation
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Model PA Anchor Clamp

  • Lightweight anchor designed for use with Metraflex Metraloops, V Loops, and Dog Legs.
  • Easy to install, no welding required.
  • Available in sizes .75” to 12”
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PAPI Pre-insulated Anchor

  • Factory manufactured anchor with no metal to metal contact
  • Features high compression Xonolite calcium Silicate insulation
  • Can be tailored for jobsite conditions for high anchor loads.
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Custom Fabricated Guides

Our team of engineers can utilize our manufacturing capabilities to design a joint tailor made for your application.

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Structural I-Beam Anchors

  • Pipe diameters 2-inch through 16-inch
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Do I really need anchors for this expansion joint?

Yes you do. See, “How do I calculate in line bellows anchor loads.”


How do I calculate in line bellows anchor loads?

It is common mistake to underestimate the anchor loads developed by an inline bellows joint.  This is the case for both internally pressurized and externally pressurized joints.  For inline bellows joint, the anchor load can be calculated by adding the three major loads together.

 

Pressure Thrust  Pressure X effective area (Use the highest pressure possible, often the test pressure). The effective area of a bellows is often overlooked.  The effective area can be found by calculating the area of the “mean” diameter of the bellows.

 

Deflection Load Published Spring Rate X movement of the joint. The deflection load is the force it takes to bend the stainless steel bellows

 

Frictional Resistance   Total weight of pipe, media, insulation X .3 coefficient. The frictional resistance is the force it takes to overcome the friction of any hangers and guides in the piping system

 

For the effective area and spring rates vary from joint to joint.  You can find the data of each joint with the bellow links.

Metragator

MNLC

HP Compensator 3” Axial

HP Compensator 2” Axial 

HPFF compensator 2” Axial

HPFF compensator 3” Axial


How many anchors do I need for my thermal expansion application?

The rules are:

1. To divide up the piping system into the largest sections a single joint can handle

2. Place anchors between the joints.

3. Review that the anchor locations are suable for the installation of an anchor. In line bellows expansion joints can develop high anchor loads.  See How do I calculate in line bellows anchor loads?

4. Only install one expansion joint between anchors.

 

Find Your Piping Solution & More

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