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PT&P manufactured variable spring supports for a refinery in Oklahoma. These F-Type PTP-6 spring cans are 70 7/8″ tall and 17 3/4″ wide. They are completely fabricated from carbon steel with PTFE slide plates welded on the load flange and internal guide. They are designed for an operating load of 30,980 lb. .with a spring rate of 2,083 lb./in. and 0.49″ of movement. These variables were hydrotested with a load of 35,000 lb. prior to shipment.
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| Type: | Big Ton Spring Supports |
| Size: | 19-5/8″ x 19-5/8″ x 15″ |
| Material: | Hot-dipped Galvanized Carbon Steel | A193 Gr. B7 |
| Design: | Movements: 3/16 ” – 1/4″ | 16,619 lb. Load |
| Testing: | Load Cell throughout Operating Range |
These big ton spring supports were designed for a liquid natural gas (LNG) plant in Australia. They were selected because the application required supporting heavy loads as the supported equipment undergoes thermal expansion during operation. The assemblies are fabricated from hot-dipped galvanized carbon steel. The travel stop rods and nuts material is A193 Gr. B7. The units measure 19-5/8″ x 19-5/8″ x 15″ and are capable of supporting loads up to 13,619 lb. while accommodating movements from 3/16″ to 1/4″. The big tons were tested with a load cell to insure proper operation throughout the big ton’s operating range.
Read MoreLearn more about the variable springs constructed at Piping Tech.
Learn more about the various types of variable spring supports made at Piping Tech, ranging from F-Type, G-Type, springs for furnace applications and much more.
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| Type: | B-Type Variable Spring Hanger |
| Size: | PTP-2 Standard Variable Spring |
| Material: | Hot-dipped Galvanized Carbon Steel |
| Design: | 0.955″ Downward Movement | Cold Load: 12,183 lb. | Hot Load: 14,723 lb. |
| Testing: | Hydro-load Test: 15,750 lb. |
PT&P designed and fabricated variable spring hangers for an Ammonia Plant in Louisiana. This B-Type PTP-2 variable hanger is fabricated from carbon steel and hot-dipped galvanized to protect against corrosion. The variable is designed for 0.955″ of downward movement and an installed load of 12,183 and an operating load of 14,723 lb. This variable included a 1″ forged steel clevis and the assembly was tested at a hydro-load of 15,750 lb.
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| Type: | Variables with dual travelers |
| Design: | Operating load: 1,698-21,756 lbs |
| Material: | A36 Carbon Steel with HDG finish |
| Size: | Horizontal Travelers range from size 2 to size 4 |
These dual travelers with Type-C variable spring hanger assemblies were custom designed by Piping Technology & Products for valves in a de-coker unit in Texas. All completed assemblies were fabricated from A36 carbon steel with an HDG finish. The travelers range from size 2 to size 4 and are designed for 12″ of horizontal movement. The variables are designed for an operating loads ranging from 1,698-21,756 lbs.
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| Type: | Variable Spring Supports |
| Design: | 1,765 lb. Load | +/- 5% Spring Rate |
| Material: | Carbon Steel with Red Oxide Primer |
| Testing: | Standard Spring Rate & Calibration Tests |
PT&P custom designed variable spring supports for a furnace application at a Nitrogen Facility in Oklahoma. The furnace springs are fabricated from carbon steel and painted with a red-oxide primer to help prevent corrosion. The spring supports are designed to support loads up to 1,765 lb. With a spring rate calibrated to be within +/- 5% of the theoretical value.
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PT&P custom designed big ton spring supports with PTFE slide plates for an LNG facility in Australia. The components within the spring housing include load columns, travel stops, spring coils and lifting lugs. Each assembly is designed for an operating load ranging from 16,276 lb. to 34,479 lb. and will allow for movement between 0.16″ and 0.24″. They are fabricated from hot-dipped galvanized carbon steel and measure 29-7/8″ x 29-7/8″ x 16-1/2″. The big ton spring support is ideal for applications that have very heavy loads with thermal expansion because of the stability they provide throughout the range of travel. These supports were tested in the press connected to a load cell to insure proper operation throughout the entire working range of the coils.
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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 15 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.
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PT&P custom designed big ton spring supports for a propane dehydrogenation facility in Texas. The components within these assemblies include the spring housing, load columns, travel stops, spring coils and lifting lugs. While both assemblies measure 42” x 24” x 26-1/2”, they were each modified based on independent specifications for operating loads and movement. The first will accommodate a load of 94,261 lb. and 0.085” of movement, while the second will accommodate a load of 102,219 lb. with 0.08” of movement.
This type of support is ideal for applications, such as pressure vessels, that combine very heavy loads with thermal expansion because of the stability they provide. The big tons were tested in the load cell to insure proper operation throughout the entire working range of the coils.
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