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Engineered Spring Supports — The Pipe Supports Blog

Replacement Constant Spring Supports with Neoprene Coating for a Highly Corrosive Application at a Salt Water Cooler Tower

October 19th, 2010 No comments
Original Supports (not fabricated by PT&P)

Original Supports (not fabricated by PT&P)

PT&P received a call to inspect spring supports in operation at a salt water cooler tower. It was quickly determined that replacement supports would be needed due to the heavy corrosion of the original supports not fabricated by PT&P.

Neoprene Coated Fig. 200 U-Type Upthrust  Constant Spring Supports

Neoprene Coated Fig. 200 U-Type Upthrust Constant Spring Supports

A total of 40 constant and variable spring supports were fabricated as replacements. Each support was sealed with a neoprene coating over a hot-dip galvanized finish instead of stainless steel. This type of finish will ensure a much longer life-span. The spring supports ranged in loads from 800 lb. to 15,000 lb. with various travel ranges.

Neoprene Coated Fig. 100 U-Type Upthrust Constant Spring Supports

Neoprene Coated Fig. 100 U-Type Upthrust Constant Spring Supports

Do you need to replace some springs in your plant? Contact us for a quote today!
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How To: Remove Travel Stops from a Constant

October 8th, 2010 No comments

Check out this video of our field service manager instructing how to remove travel stops from a constant effort support. This procedure is a very critical and necessary step in the installation of constant spring supports.

More helpful instructional videos are available on our website!

Variable Spring and Cro-Moly 3-bolt Clamp Assemblies for a Power Generation Facility

October 5th, 2010 No comments

Variable Spring and Cro-Moly 3-bolt Clamp Assemblies for a Power Generation Facility

The variable spring and clamp assemblies are fabricated using a combination of carbon steel for the housing and internal components, spring steel for the spring coils, and Cro-Moly (A-387 GR. 22) for the high temperature 3-bolt clamps. This pipe hanger assembly is an example of PT&P’s standard variable spring design wherein multiple coils are arranged in series to produce adequate load carrying capacity and coil deflection to compensate for the anticipated pipe movement. These particular assemblies are capable of an overall load range of 9,320 lb. to 15,970 lb. with a total travel range of 5″. All pipe hanger assemblies underwent standard load and travel testing, 100% deflection testing, and load cell calibration before shipping to a power generation facility.

Want to learn more about variable springs? Watch a recorded variables webinar!

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Custom U-Type Constant for an Oil Refinery

July 13th, 2010 No comments

U-Type Constant Spring Support for an Oil Refinery

This custom designed carbon steel constant measures 19 5/8″ wide, by 59 1/2″ tall, by 52 1/8″ long. It is designed for a 500 lb. load with a total travel of 17 1/2″. The support frame was increased in height to meet a large take-off of 59 1/2″. The constant spring will be used to support piping in an oil refinery.

Do you have a need for custom constant springs? Let us price them for you today!
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Custom U-Type Constant Spring Supports with Slide Plates

June 15th, 2010 No comments
Custom U-Type Constant Spring Supports with Slide Plates

Custom U-Type Constant Spring Supports with Slide Plates

PT&P fabricated 12 constant spring supports of various sizes with PTFE, 25% glass filled slide plates. The smallest constant is 38.25″ length x 13″ width x 28″ height, and the largest is 52″ length x 19″ width x 28″ height. The designed loads vary from 13,264 lb. to 15,962 lb. and the total travel range is 2″ to 3″.

Do you require constants or slide plates in your piping system? Get a quote today!

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Custom Constant Spring Hangers and Pipe Clamps

June 8th, 2010 No comments
Custom Constant Spring Hangers and Pipe Clamps

Custom Constant Spring Hangers and Pipe Clamps

The constant spring hangers are manufactured from A36 carbon steel and have custom 4-bolt pipe clamps due to heavy loads. The dimensions are 40″ length x 18″ width x 85″ height and are designed for a 1,784 lb. load with 10″ of travel. The constants will be used to support radiant inlet manifolds and have a unique paint applied due to the highly corrosive condition. The entire pipe hanger assembly went through load and travel testing prior to shipping.

Want to learn more about constant springs? Instantly view a past constant webinar!
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Big Ton Springs with a Custom 3-Coat Paint System

May 18th, 2010 No comments
Big Ton Springs with a Custom 3-Coat Paint System

Big Ton Springs with a Custom 3-Coat Paint System

PT&P fabricated big ton spring supports for an expedited delivery of six weeks from conceptual design to final delivery. The big tons measure 26″ long x 26″ deep x 34-5/8″ tall and will be used to support substantial vertical loads while simultaneously providing a base support structure. They are designed for operating loads of 36,000 lb. with a travel of .5625″ down.

Due to the harsh and corrosive environment, the exposed metal surfaces were finished with a three-coat urethane paint while the threaded components were cadmium plated with a blue Fluorocarbon coating. The big tons were also salt water spray tested according to ASTM B117 standards, and load tested to verify the springs’ functionality throughout the entire travel range.

Do you need big ton springs for your piping system? Get pricing today!
request-a-quote

F-Type Variable Springs with Slide Plates

May 4th, 2010 No comments
F-Type Variable Springs with Slide Plates

F-Type Variable Springs with Slide Plates

PT&P fabricated variable springs from hot-dipped galvanized carbon steel components and a neoprene coated spring steel coil. P.T.F.E. slide plates are welded to the load flange to reduce frictional forces generated during lateral movement of the supported pipe. Internal guides are also installed to help maintain vertical alignment of all moving components throughout the anticipated thermal deflection cycle. The installed (cold) load is set to 10,413 lb. With a design travel of 0.720” up, the final operating (hot) load will be 8,974 lb. Each spring is equipped with travel stops and went through load testing prior to shipping.

Want to learn more about variable springs? Instantly view a past variables webinar!

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Big Ton Spring Supports with Slide Plates Designed for a Chemical Processing Plant

April 13th, 2010 No comments
Big Ton Spring Supports for a Chemical Processing Plant

Big Ton Spring Supports for a Chemical Processing Plant

A total of 18 big ton springs of various sizes were fabricated from A516 Gr. 70N carbon steel. The big tons were designed in a rectangular configuration in order to match the existing vessel saddle supports and the concrete foundation below the springs. PTFE, 25% glass filled slide plates will be welded on the load flanges to allow horizontal movement in addition to the vertical movements specified. The largest of the big ton assemblies has an operating load of 79,000 lb. with a travel of .706″ down.

Want to learn more about big ton springs? Watch a recording of a spring support webinar now!

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Custom Vertical Constant Hangers

April 6th, 2010 No comments
Custom Vertical Constant Hangers

Custom Vertical Constant Hangers

PT&P manufactured constant spring supports to custom dimensions of 21″ height x 13″ width x 7.5″ depth. The total travel is 7″, with an actual travel of 3.5″ in both up and down directions. The rated load is 180 lb. and they will be used to support pipe lines for a power plant in Louisiana.

Do you see a need for constant hangers in your plant? Get pricing today!
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Mailing: P.O. Box 34506, Houston, TX 77234-4506 Location: 3701 Holmes Road, Houston, TX 77051
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