| 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 |
Piping Technology & Products designed and manufactured custom dual travelers with type-C variable spring hanger assemblies for valve applications in a de-coker unit in Texas.
In a delayed coker unit, piping systems are concentrated around coke drums, switch valves, and overhead lines where they are exposed to extreme thermal cycling, vibration, and continuous operational switching. These conditions create significant movement and stress in the piping, which, if not properly supported and managed, can transfer excessive loads into critical components like valves and drum nozzles. Over time, this leads to fatigue cracking, misalignment, and premature equipment failure—resulting in leaks, costly unplanned shutdowns, and serious safety risks. Reliable piping support solutions are essential in these environments to control movement, protect critical assets, and ensure continuous, safe operation of the unit.
Dual-travel assemblies are especially useful in cokers, where large thermal movements, load variability, and tight spatial constraints all come into play. Instead of specifying an oversized spring with long travel (which may not fit), a dual traveler design provides the required movement capacity within a compact envelope while maintaining proper load control and protecting valve connections.
Fabricated from A36 carbon steel with a hot-dip galvanized (HDG) finish, these assemblies provide durability and corrosion resistance in demanding refinery environments. The dual traveler design accommodates up to 12 inches of horizontal movement, helping to reduce stress on piping and connected equipment.
The Type-C variable spring hangers were engineered to support operating loads ranging from 1,698 to 21,756 pounds, ensuring reliable load control throughout system operation.
This project highlights PT&P’s competitive advantage in delivering fully engineered, field-proven solutions that address complex challenges in both new and existing piping systems. By combining custom design, in-house manufacturing, and rigorous testing, PT&P ensures each solution performs reliably under extreme thermal movement and operating conditions. Our ability to integrate with pre-existing piping layouts, while maintaining system integrity and protecting critical equipment, enables customers to implement solutions that work in practice quickly, resulting in improved reliability, reduced downtime, and long-term operational confidence.
