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Constant Spring Supports — The Pipe Supports Blog

Stock Upthrust Constants Modified with an Auxillary Platform

January 16th, 2012 Comments off

200 U-Type Constant Spring Supports Designed for Large Spring Coils.

These 200 U-Type constant spring supports were modified to increase their installed height by adding a secondary plate and angles, which will be welded to the structural beam. The constants range in size from 25″ to 27″ in height, 52″ to 67″ in length, and 25″ in width. Their load capacities range from 10,300 lb. to 13,000 lb. with vertical movement ranging from 3″ to 4-1/2″. All constants were fabricated from A-36 carbon steel, and went through standard load and travel testing per MSS Standards prior to shipment.

Do you have a similar application that requires upthrust constants? Get pricing today!

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U-Type Constant Springs Custom Designed for Large Travel for an Oil Refinery

September 19th, 2011 No comments

U-Type Constant Springs Custom Designed for Large Travel for an Oil Refinery

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.

U-Type Constant Springs Custom Designed for Large Travel for an Oil Refinery

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

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Constant Spring Supports Designed with Special Lugs for Connecting to a Trolley

April 4th, 2011 No comments

Constant Spring Supports Designed with Special Lugs for Connecting to a Trolley

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! access-our-webinar-archives

100-C Constant Spring Supports with Double Lug Suspension and Chained Travel Stops for an Oil Refinery in Canada

January 31st, 2011 No comments

100-C Constant Spring Supports with Double Lug Suspension and Chained Travel Stops for an Oil Refinery in Canada

These figure 100 C-type constant springs were manufactured from A36 carbon steel for an oil refinery in Canada. Each constant was designed for 7″ of travel with a load of 35,144 lb. They measure 21.5″ W x 42″ L x 80″ H, and were specially designed to match a competitor’s dimensions in order to fit in the required application.

Do you require constant spring supports for your piping system? Get pricing today!

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Constant Spring Supports with Corrosion Resistant Coating Manufactured on a Rush Basis for Off-shore Drilling in Malaysia

January 17th, 2011 No comments
Fig. 200 C-Type Constants

Fig. 200 C-Type Constants

Fig. 200 U-Type Upthrust Constants

Fig. 200 U-Type Upthrust Constants

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A “U-Type” and 6 “C-Type” constant spring supports were designed to support piping in a corrosive environment located off-shore in Malaysia. The U-Type measures 21″ x 25″ x 57″ and C-Types range in size from 11-5/8″ x 17″ x 4″ to 18-3/4″ x 32″ x 80″.

Constant Spring Supports with Corrosion Resistent Coating

The constants are fabricated from A36 carbon steel with a fluorocarbon coating on the pins. The frame, housing, and all components were coated with a 3-coat paint system to resist corrosion. Standard load and travel tests were performed prior to shipping the constants on a rush basis.

Want to learn more about constant springs? Instantly view a past webinar on constants now!
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Constant Spring Supports vs. Variable Spring Supports

December 3rd, 2010 No comments

Ever wonder what makes a constant spring support different from a variable spring support? How does each one function? How do they support loads and allow for movement in a pipeline? Check out our new spring support article that provides all the answers to these questions and more.

F-Type Variable Springs with Slide Plates

F-Type Variable Springs with Slide Plates

Upthrust 200-U Type Constants for an Oil Refinery

Upthrust 200-U Type Constants for an Oil Refinery

 

 

Want to learn more about constants? Instantly view a past constants webinar now!


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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!

Special U-Type Constant Spring Supports

January 19th, 2010 No comments
Special U-Type Constant Spring Supports

Special U-Type Constant Spring Supports

PT&P designed a constant load support system for a fluid tank with a load of 105,000 lb. over an area of 5′ W x 20′ L. To prevent twisting of the fluid container, the support system is designed to allow for “level” vertical movement. This was achieved by using a special system composed of three U-Type constant units. Each unit employs two springs working in parallel with a common large base plate and a load flange to support the entire 5′ width of the container.

Special U-Type Constant Spring Supports

The constants will support loads of 39,000 lb., 36,000 lb., and 30,000 lb., with a total travel of 4″ in the “upwards” direction. The spring coils were coated in neoprene, and all the other major components were hot dip galvanized to inhibit corrosion. These constants were constructed primarily from carbon steel with the use of stainless steel and PTFE, 25% glass filled slide plates.

Want to learn more about constant springs? Instantly view a past constant webinar today!
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200-C Type Constants for a Steam Plant

July 29th, 2008 No comments
200-C Type Constants for a Steam Plant

200-C Type Constants for a Steam Plant

 

200-C Type Constants for a Steam Plant

Close-Up View

These 200-C type constants are fabricated from A-36 carbon steel and are designed for a load ranging between 17,800 lb. and 25,600 lb. The constants have a downward travel ranging between 12 1/2″ and 16″. This support maintains a constant load throughout the designed travel. The diameter of the spring coil housing is 21″. The design includes a universal locking device capable of locking the hanger rod at any desired position. It also includes lifting lugs that aid in installing the constant in the field. Standard load and travel testing was performed before shipping to a steam plant.

Do you require constant supports in your piping system? Get a price quote today!

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