The Pipe Support Blog

These PTP-1 F-Type variable spring assemblies fabricated from A-36 carbon steel, were custom designed to accommodate a height of 11-11/16" while keeping the same spring rate. The F-Type variable is used to support the pipe from below and are typically mounted to concrete pads via anchor bolts or welded to structural steel. The variables are designed for loads up to 6,500 lb. and a total upward travel of 5/16".

Want to learn more about variable springs? Check out a recording of a past live webinar.

The live Webinar is over, but you can still view the recording at www.pipingtech.com/webinar

Subject: Variable Spring Support Design, Size Selection, Installation & Maintenance ** Webinar is worth 1 PDH Credit for TX Professional Engineers

Date: Thursday, January 5, 2012


This Webinar will focus on the different types of variable spring supports and big ton variable spring supports. Learn about the special features available, in addition to the design of a variable support. View how the different coil configurations produce a unique response to an applied load and see how a spring assembly is loaded. Discover the basic steps in selecting a hanger design and the step by step process used to size a spring for your application.

Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to replace or re-calibrate a variable spring support, as well as adjustments, shutdown and isolation procedures.

The featured presenter, Jerry Godina has over 13 years experience as a pipe support designer and manages PT&P's engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.

These figure 200 U-type constant springs were fabricated from A-36 carbon steel and range in size from 30-1/2" to 41" in height, 25" to 31" in width, and 68" to 80" in length. These are horizontal constants designed to support piping from below where the base plate is bolted directly to the top of the steel or the foundation using anchor bolts. Loads range from 9,000 lb. to 42,000 lb., and vertical movements range from 6" to 11". All the constants went through standard load and travel testing per MSS Standards prior to shipment.

Want to learn more about constant springs? Instantly view a recording of a past webinar.

Subject: Constant Spring Supports Design and Application ** Webinar is worth 1 PDH Credit for TX Professional Engineers This Webinar is over... visit www.pipingtech.com/webinar to view the recording.  

This Webinar will focus on the different types of constant spring supports. Learn about the special features available, in addition to the design of a constant support. View how the different cam/coil configurations produce a unique response to an applied load. Discover the step by step process used to size a spring for your application. Learn about the different attachments, testing, and installation and maintenance procedures. View examples of failed supports provided by our Field Service Division and learn why they failed and how to prevent it. Gain knowledge of the valuable tips used when deciding to adjust or replace a constant spring support, as well as shutdown and isolation procedures. The featured presenter, Jerry Godina has over 13 years experience as a pipe support designer and manages PT&P's engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.

This F-type variable spring support was customized with a wire rope isolator for a facility located in Canada. The variable spring was designed for a load of 12,000 lb. The wire rope isolator is essentially a 1.25" diameter stainless steel rope looped eight times between two chemically conversion coated aluminum alloy retaining bars. The wire rope isolator is effective in vibration isolation and energy absorption.

Need a similar support? We'd be happy to serve your needs!

A total of 90 variable spring supports were designed and manufactured to support pipe lines in a gas storage facility in Abu Dhabi. The pictures above show PTP-4 Double Spring B-Type, PTP-6 Triple Springs B-Type, PTP-1 Triple Springs D-Type, and PTP-4 Double Springs F-Type, (also known as F-Cans). Load capacities range from 1,000 lb. to 45,000 lb., and movements range from 3/8" to 3". A two-layer custom paint was applied over the hot-dip galvanized finish to protect against a severely corrosive environment. Travel stops were chained to the spring can housing, so they can be reused during plant shutdowns. Load and quality assurance tests were performed on all the supports prior to shipment.

Need variable spring supports for your piping system? Get pricing today.

This custom designed variable spring assembly is comprised of a standard PTP-1-160 type F variable spring with a supplementary extension and load flange with a stainless steel slide plate. The variable is fabricated entirely from carbon steel with a hot-dipped galvanize finish. The extension is schedule 40 pipe, 8" in diameter and 12-5/16" in height. The slide plate is fabricated from A240 grade stainless steel and is welded to the top of the load flange. This support will be used underneath a 16" diameter pipe with a dummy leg. It is designed for 1/16" vertical travel and 1/8" horizontal travel for an oil refinery in Algeria.

Do you require custom variables or slide plates for your piping system? Get pricing today!

 

These PT&P 200 series constants are fabricated from A36 carbon steel. The 200-A constants measure 18.5"w x 20"H x 65"L and will support a 22,200 lb. load. They are modified to avoid interference with the structure by shortening the frame. The 200-C constants measure 18.5"w x 29"H x 80"L and will support a 32,000 lb. load. The constants have specially fabricated lugs to allow for a 3 ton trolley to connect with it.

Do you have a need for constants in a current or upcoming project? Let us price them for you!

PTP-2 Type-G variable spring support assemblies were designed and fabricated for an expansion project at an oil refinery. The G-type spring is comprised of two standard variable spring housing-coil subassemblies joined together with an intermediate bridge assembly. The bridge assembly is customized to match existing site conditions, which allows for use in applications with limited space or interferences. This particular assembly was provided with extra large channels because the specified C-C dimension of 59" exceeded the maximum (48") of our standard G-type variable springs. The housings, internal components and channels were fabricated from carbon steel, and spring steel was used for the coils. The assembly was designed for a total operating load of 24,014 lb. with a design travel of 0.76" upward.

Want to learn more about variable springs? Watch an instant recording of a past variables webinar.