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Tag: Video
Nano Constant Performance Test
See PT&P’s performance testing of our Nano Constant
Happy New Year from PT&P
Pipe Clamps Product Video
High Temperature Pipe Supports (Hot Shoes) Product Video
Hold-Down Pipe Clamps Product Video
Overview of PT&P’s Online Courses
Meet the presenters of PT&P’s Online Courses. Click on each video to learn about each course’s objectives, course outline, course module content, and grading breakdown.
Learn more here about PT&P’s online courses and register for a course
Happy 4th of July from Piping Technology & Products!
Have a look at Piping Technology & Product’s New Product Pages
Have a look at PT&P’s new product pages on pipingtech.com. All product pages now features:
– All information in one place
– New photos and videos
– Downloadable tables and charts
– Simple Request A Quote forms
Function of PT&P’s Bulletproof Protection Shield (Critical Defense Product)
Function of a Constant Spring
New Website Countdown Begins Now! #PTPRelaunch
Function of a Variable Spring Hanger
DESCRIPTION OF A VARIABLE SUPPORT HANGER
Variable support hangers are used to support components and structures (e.g. pipes, vessels, etc.) that experience vertical movement. Unlike constant support hangers, the variable support hangers are used where the supporting components have the capability to withstand load variations of up to 25%.
The vertical movement is accommodated by a compression spring coil (or stack of coils in series) which is pre-compressed to an initial load setting. During operation, the supported component will travel through its specified movement and the coil(s) will be compressed/decompressed to the final load setting. This difference, or variation, in loads between the initial setting and the final setting gives rise to the term “variable” spring support.
A maximum variability factor of 25% has been established by MSS to limit the load differential which may be prescribed in a variable spring support. The variability is a ratio of the change in load compared to the final load. When prescribing variable spring supports, attention must be given to the spring rate and the desired amount of travel to insure the variability factor remains below 25%.
The movement of a variable spring hanger rod supporting a load is animated in the video clip. The initial load position is designated as “cold position” in the animation. As the load moves upward, the spring is decompressed to the final load position designated as “hot position”. The load difference (variation) is produced by the coil’s change in compression multiplied by the spring rate. The change in compression of the coil causes a direct change in the supported load as seen at the hanger rod.
How to Remove Travel Stops from a Variable Spring Hanger
Function of a Constant Spring Hanger
DESCRIPTION OF A CONSTANT SUPPORT HANGER
Constant support hangers are used to support structures and components (e.g. pipes, vessels, etc.) that experience vertical movement. The constant hangers provide support at critical locations of a structure such that the temperature dependent deformation of the structure does not produce any excess stress in the structural system.
Theoretically, a constant support provides a constant force on the structure so that it does not experience any extra resisting forces from the support. However, in reality, complete constant load reaction is not possible. That is why the MSS standard allows a maximum tolerance of 6% of the constant load throughout the entire travel range.
Constant resistance to a moving load is achieved by balancing the moment of the moving structure by the moment produced by the force of a compressing/decompressing spring about a common pivot point.
The movement of the constant hanger rod, supporting a load, is animated in the video clip. As the hanger rod connected to the cam moves down (or up) on the left hand side, the spring on the right hand side is compressed (or decompressed) by the spring rod.
Here, the moment of the external load acting downward along the hanger rod varies as the supporting pipe moves (down or up). The variations of the moment (due to changing moment arm length) of the moving external constant force is balanced by compressing (or decompressing) the spring with the lever arm about the same pivot point.
In designing a constant support hanger, minimum variation of the load is optimized via selecting the proper arm lengths of the external force and the spring force, and the spring constant for a given total displacement of the external load.
5 Reasons Piping Technology & Products Crushes Their Competition
Piping Technology & Products gives you 5 reasons on why we crush the competition.
PT&P Engineering and Design
PT&P in the Community: Back To School
Piping Technology & Products joins the Houston Independent School District in giving back to the community.
PT&P's Sizzling Summer: Supports, Services & Safety
Have a look into our new Expansion Joint Course
Expansion Joint Application and Design Course:
This course covers how to provide flexibility in the piping system by employing expansion joints to accommodate thermal expansion and contraction of sections of pipes or ducts.
Learn more about the Expansion Joint Course and more