These constant hanger assemblies are used to support piping systems subjected to vertical movement. They are capable of supporting loads ranging from 3,000 lbs to 63,000 lbs with a travel range of 5″. They have dimension between 73″ long, 36″ tall, and 23″ wide to 80″ long, 27″ tall, and 12 3/4 ” wide. Standard testing was performed for quality assurance.
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Constant hangers provide constant support for pipes subject to vertical movement due to thermal expansion. These Type E Constant Hangers are made from carbon steel ranging from 5 to 7 in length. Their applicable loads range from 17,300 lbs to 30,000 lbs. The total travel ranges from 2 to 9 . Standard constant load testing was performed for quality assurance per customers request.
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These PTP-200 type C constants measure 23″ x 64″. are designed for an operating capacity of 14,400 lbs and a travel range of 4″. The constants are made of A36 carbon steel and weigh 1,770 lbs each. They have been modified to accommodate a specialized spring coil and have a modified casing. Standard load and travel testing were performed prior to shipping to ensure quality.
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All of the custom designed variables consist of a single flange with two spring supports in order to meet the customer’s height restrictions. These PTP1-140 Type F variable springs are fabricated from A36 carbon steel with an overall weight of 16,900 lbs. They are designed for upward movement of 0.079″ with a hot load of 4,490 lbs., and a cold load of 4,620 lbs.
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This (PTP-13) size horizontal E-type constant is for an energy plant in Iowa. It measures 14″ 9″ 24″ with a total travel range of 5″ and an operating load of 388 lbs. It is fabricated out of A36 carbon steel, and weighs 95 lbs. Standard load and travel testing were performed on the constant prior to shipping to ensure quality.
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Piping Technology & Products, Inc. custom designed and manufactured Type 200-C constant springboxes for an energy plant in Louisiana.
The constant measures 23 x 40 designed for an operating load capacity of 8,300 lbs. and a total travel range of 8. The constant is fabricated of A36 carbon steel. To ensure quality,
standard load and travel tests were performed prior to shipping.
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All of the spring components are made of A4150H and carbon steel. Per customer’s request, a two coat epoxy paint was applied to the springs. The Type-A variable spring assemblies measure 22″ x 79″ with an installed load of 45,000 lb., operating load of 56,000 lb., and a downward travel of 5″. The Type-C assemblies measure 22″ x 89″ with an installation load of 38,000 lb., operating load of 47,000 lb., and a downward travel of 5 1/2″. Each spring coil was tested to insure the wire diameter, coil height, and spring rates.
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These constants are manufactured from A36 carbon steel and measure 11″ x 29″ x 61″. Total weight of each constant is 430 lb. The loaded capacity is 2,160 lb. and the maximum travel is 15″. Standard load and travel test were done to ensure quality and performance. The turn around for this product was four days.
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Piping Technology & Products, Inc. recently custom designed and fabricated PTP Fig. 200 Constant Hangers for a coker unit in St. Croix.
These supports, with operating loads ranging from 4,000 lb. to 58,000 lb., will be used to support flue gas ducts at the oil refinery. The overall lengths of the Horizontal Constants are 5′ to 7′, and the heights of the Vertical Constants ranged from 4′ to 6′. The combined weight of the constants totaled over 24,000 lb. Color-coded rivets for hot and cold loads and universal locking devices are also installed per customer’s request.
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The constants‘ dimensions are 25” x 56” with 17” pipe OD, and 29” x 68” with 21” pipe OD. These constants have a loaded capacity of 8,400 to 17,800 lbs. This constant is designed to support piping from below. The tests that were conducted on this product were standard loading and travel testing to ensure quality and performance. The constant is manufactured from A36 carbon steel.
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Piping Technology & Products, Inc. recently custom designed and manufactured 32 spring supports with PTFE, 25% glass filled, slide plates for a plant in China. The total weight of the spring supports supplied is 13,143 lbs. and they have a travel range of ¾”. These products support the vessel and the PTFE, 25% glass filled, slide plates allow height adjustment as well as mobility. These spring supports are designed for operating loads of 42,266 lbs. and were constructed of carbon steel.
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The constants measure 35” x 12” x 20 ¼” and 29” x 10” x 19 ½”. The products have a maximum travel of 5” and can support loads up to 790 lbs. and 430 lbs. They are constructed of A36 steel with a hot dip galvanized finish. The frames on the custom designed constants were elongated to meet customer’s specifications. Standard load and adjustment testing was performed to ensure quality prior to shipping.
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The constants measure 61 x 17 x 40 and weighs 560 lbs. a piece. They are designed to operate in temperatures from -40° F to 660° F. The unique construction of the constants permits extensive vertical travel, ranging from 20.5 to 26. Standard load and adjustment testing was performed to ensure quality prior to shipping.
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Piping Technology & Products, Inc. recently custom designed and fabricated 63 variable spring assemblies used to support a boiler in a power plant. Three sets of custom springs were designed for this project. The first group measures 14 x 14 x 17 1/8 and can support 45,000 lbs. per inch. The next group can support up to 28,000 lbs. per inch and measures 16 x 16 x 17 11/16. The third group measures 15 x 15 x 17 9/16 and can support 38,000 lbs. per inch. The coils in the assembly are made from 2 15/16 diameter coil with 2 3/4 or 3 active coils.
The variable spring assemblies are carbon steel with an inorganic zinc primer finish. The spring coils are A4161-H material with a neoprene exterior coating. Each spring coil was tested to insure the wire diameter, coil height and spring rates met customer specifications.
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Piping Technology & Products, Inc. custom designed and manufactured eight Type F vertical constant supports for a refinery in Ohio. The constants are capable of supporting 2,000 to 3,500 lbs. and have a maximum travel of 5. They are constructed of carbon steel and each weighs 270 lbs. Standard load and adjustment testing was performed to ensure quality prior to shipping.
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Piping Technology & Products, Inc. custom designed and manufactured four PTP-100 Type G constants and three PTP-100 Type C constants for a power station in Missouri. The PTP-100 Type C constants are designed for operating loads of 8,300 lbs. to 25,200 lbs. and have a travel range of 2.5 to 3.5. These constants are fabricated from A36 carbon steel with dimensions ranging from 66×18 to 88×20.
The PTP-100 Type G constants are designed for operating loads ranging from 2,800 lbs. to 38,800 lb. and a travel range of 2.5 to 3.5. They are fabricated out of A36 carbon steel with dimensions ranging from 75×26.5 to 95×50. Standard load and adjustment testing was performed to ensure quality prior to shipping.
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Piping Technology & Products, Inc. custom designed and manufactured 46 PTP 100-C size 50 constants for a hydrogen reformer in Chile. The constants measure 30 x 48, designed for a vertical travel range of 11 and an operating load capacity of 2,600 lbs. They are fabricated out of A36 carbon steel. To ensure quality, standard load and travel tests were performed prior to shipping.
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These constants are designed for a vertical travel range of 8.5 and an operating load capacity of 70,000 lbs. They are fabricated out of A36 carbon steel with dimensions of 45×80. Prior to shipping, standard load and travel tests were performed to ensure product quality.
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Piping Technology and Products, Inc. custom designed and manufactured variable springs to be used in conjunction with a rod and clevis assembly for a power plant in West Virginia. Since the operating loads specified by the customer were greater than the maximum loads for the largest PT&P spring, custom units needed to be built for this application. The springs were fabricated using a large spring coil, normally only used in constant spring assemblies. The spring is 20 1/2″ in diameter and has a standing height of 51″. All components of the pipe hanger assembly were made from carbon steel and were supplied with a hot-dipped galvanized finish. The spring is 20 1/2″ in diameter and has a standing height of 51″. The rods will be attached to type A variable springs designed to support loads from 850 lbs. to 13,300 lbs. Manufactured from A-36 carbon steel, the rods are 3/4″ to 2″ in diameter and range in length from 68″ to 95″.
To prevent contamination at high temperatures, a non-galvanized finish was applied to the rods per customer’s request. Prior to delivery, a 100% dye-penetrant test was preformed to ensure quality. The variable springs were tested in the load cell to insure proper operation and also to set the cold load to the specifications as provided by the customer.
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Piping Technology & Products, Inc. recently fabricated 48 PTP-200 type U and 54 PTP-100 type B constants for an oil refinery in Texas. The PTP 200 type U with base support constants are designed for operating loads ranging from 650 lbs. to 7700 lbs. and a travel range of 3″ to 4″. They are fabricated out of A36 carbon steel with dimensions ranging from 15″x22″ to 27″x38″. The PTP 100 type B constants are fabricated from A36 carbon steel with dimensions ranging from 11.5″x23″ to 12″x29″ and total travel of 3″ to 4″. These constants are designed for operation loads ranging from 1100 lbs. to 2800 lbs. Space restrictions required a customized compact design. Standard load testing was performed to ensure product quality prior to shipping.
Do you require constant supports for your piping system? Let us price them for you today!
Sign-up for a Live Technical Webinar…
This Webinar will focus on installation and maintenance guidelines and offer valuable tips on inspecting a wide variety of pipe supports and expansion joints in your piping system. We will cover various pipe support applications and point out signs that indicate if a particular support needs replaced or adjusted. Obtain the knowledge you need to avoid the possibility of a potentially catastrophic situation. View examples of real-world problems and see how we were able to solve them with timely and cost-effective solutions.
September 12th: U.S. Bellows 101 - The Basics of Expansion Joints 10:00 am OR 2:00 pm
September 19th: Constant Spring Supports Design and Application Webinar 10:00 am OR 2:00 pm
September 26th: Shock Control, Restraint & Support Devices Webinar 10:00 am OR 2:00 pm
Piping Design and Analysis Influence on Pipe Support Selection and Design
Surveying a piping system? Need to change a current system?
This course is also great for…
• New Engineers, Management and Operations
• Field, Process, Maintenance and New Engineers
• Piping and Piping System Designers and/or Instructors
*This online course is approved for 8 hrs. P.E. Credits
