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pipe hanger — The Pipe Supports Blog

F-Type Variable Springs for a Local Chemical Plant

December 22nd, 2008 No comments
F-Type Variable Springs with Slide Plates

F-Type Variable Springs with Slide Plates

Pictured above are F-type variable spring supports designed for a local chemical plant. They are designed for a vertical movement of 1/8″ and an operating load ranging from 638 lb. to 2,612 lb. Fabricated using A-36 carbon steel components from our shop inventory, these variables include PTFE, 25% glass filled, slide plates to allow for translational movement. Each spring is preset to the specified installed load prior to shipment.

Do you see a need for variable springs in your plant? Get pricing today!
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A-36 Carbon Steel G-Type Constant on a Rush Basis

November 12th, 2008 No comments
Refurbished A-36 Carbon Steel G-Type Constant on a Rush Basis

Refurbished A-36 Carbon Steel G-Type Constant on a Rush Basis

Refurbished A-36 Carbon Steel G-Type Constant on a Rush Basis

Damaged Constants in the Field

This constant spring support is fabricated from A-36 carbon steel and measures 39″ long x 29″ high x 11″ wide. This replacement support is designed to carry 11,000 lb. of piping load with a travel of 2 1/2″ upward. The limiting design factor was to stay within existing structural boundaries while allowing the constant assembly to move through its designed travel range.

Do you require g-type constants for your upcoming project? Contact us for pricing!

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A-Type Variable Spring Supports with a Load Capacity of 596 lb.

August 29th, 2008 No comments

A-Type Variable Spring Supports with a Load Capacity of 596 lb.

A-Type Variable Spring Supports with a Load Capacity of 596 lb.

 

A-Type Variable Spring Supports with a Load Capacity of 596 lb.

Drawing of Variable Spring

Fabricated from A-36 carbon steel, these PTP-4 A-Type variable spring supports measure 6 5/8″ OD x 19 9/16″ in length with an installed load of 596 lb. They have a spring rate of 56 lb/in., and a downward travel of 1.375″. These supports are designed to suspend from a rod that is threaded through the upper portion of the variable (see Fig. PTP-4). This particular design is generally used to keep the variable further away from the beam to avoid interference.

Want to learn more about variable springs? Instantly view a past variables webinar!
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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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8 Foot Long Big Ton Variable Spring Assembly

May 28th, 2008 No comments

8 Foot Long Big Ton Variable Spring Assembly

8 Foot Long Big Ton Variable Spring Assembly

8 Foot Long Big Ton Variable Spring Assembly

Slideplates on Big Ton Spring Assembly

This big ton spring assembly is designed for a local area refinery, and is fabricated from carbon steel components with a painted finish. The top of the load flange has three PTFE, 25% glass filled slide plates. The base is 96″ x 18″ and the installed height is 24″. This big ton spring will be utilized to support heavy (in excess of 76,000 lb.) loads where a standard variable spring would be undersized. The big ton spring design includes an array of parallel coils within one frame to produce large load carrying capacity while maintaining the same spring rate. The assembly is designed to withstand an operating load of 76,800 lb. and has a downward travel of 0.894″.

Prior to fabrication, each of the coils were individually tested to insure correct spring rate and load capacity. After fabrication, the entire assembly was tested throughout the entire load and travel range.

Want to learn more about big ton springs? View an engineered spring support webinar today!


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63″ x 63″ Big Ton Springs for an Oil Refinery

April 14th, 2008 No comments
63" x 63" Big Ton Springs for an Oil Refinery

63" x 63" Big Ton Springs for an Oil Refinery

The base measures 63 inches square while the top load flange measures 55 inches square. One of the springs has an overall height of 22-7/16″ and the other an overall height of 28-5/8″. Both big ton springs are custom designed and fabricated from carbon steel with a hot-dipped galvanized finish. The top of the load flange is covered by a stainless steel slide plate. These big ton springs will be used to support heavy (in excess of 100,000 lb.) loads where a standard variable spring would be undersized.

One of the big ton springs is designed with a operating load of 126,000 lb. and the other with an operating load of 225,000 lb. Prior to fabrication, all of the coils, within the frame, were individually tested to insure correct spring rate and load capacity. After the units are fabricated, the entire assembly is tested throughout the entire load/travel range.

Do you require a similar spring support in your piping system?  Let us price it for you now! 
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23″ Modified F-Type Variable Springs with Rollers

January 16th, 2008 No comments

23" Modified F-Type Variable Springs with Rollers

23" Modified F-Type Variable Springs with Rollers

PT&P custom designed and fabricated these F-type variable springs with rollers to be used in a refinery in Kansas. The variables are fabricated from carbon steel with a stainless steel clamp-on shoe that attaches to the load column. These F-type variable spring assemblies measure 23″ in height and have an upward travel of 3″. The operating load is 1,000 lb. and the installed load is 1,300 lb. The function of this custom designed variable spring is to allow large axial movement along the axis of the pipe centerline. The load column is modified to accommodate the special clamp-on shoe. The customized wheels allow for movement of the entire spring assembly in conjuction with the pipe.

Do you require variable springs for a similar application? Get a price quote today!
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7′- 6" Long Custom Variable Spring Hangers

November 21st, 2007 No comments
7'- 6" Long Custom Variable Spring Hangers

7'- 6" Long Custom Variable Spring Hangers

These variable spring hangers were custom designed per customer specifications for a power plant in Turkey. The pipe hanger assembly measures 7′- 6″ long and the diameter of the can measures 12″. The variable spring hanger is capable of 55,137 lb. of hot load and 63,339 lb. of cold load. The assembly allows for 1″ upward travel.

In order to achieve the required spring rate, PT&P utilized a set of stacked coils (5 5/8″ O.D.) nested inside a larger coil. This produced an overall spring rate of 9,235 lb/in. The upper and lower attachments were minimized to fit within the space requirements provided.

Do you see a need for variable springs in your application? Get pricing today!
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80" U-Type Constants for a Power Plant

October 10th, 2007 No comments
80" U-Type Constants for a Power Plant

80" U-Type Constants for a Power Plant

– U-Type constant spring supports for a power plant in Thailand
– Fabricated from A36 carbon steel
– Dimensions = 25″W x 28″H x 80″L
– Load = 24,000 lb.
– 3″ of total travel upward
– Standard load and travel testing was performed

Want to learn more about constant springs? Instantly view a constant webinar today.


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43" Angulating Constants for a Power Plant

August 29th, 2007 No comments
43" Angulating Constants for a Power Plant in Utah

43" Angulating Constants for a Power Plant in Utah

The design of this constant requires that it be connected by pins from the top and from the bottom to allow it to angulate. The constant assemblies are fabricated from A36 carbon steel. The constants measure between 23″ and 43″ in length with a take-off between 29″ and 55″. The load range is 60 lb. to 2,605 lb. and each constant assembly underwent standard load and travel testing.

Do you see a need for constants in your plant or refinery? Get pricing today!
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