| Type: | Constant Spring Supports |
| Size: | 35-7/16″ Height & 75-3/4″ Length |
| Material: | A36 Carbon Steel with HDG | 304 Stainless Steel |
| Design: | 9″ Total Travel at 979°F | Operating Load 6,183 lb. |
| Testing: | Hydro tested at 6,744 lb. |
These products are used across a wide range of industrial facilities worldwide, including petroleum refineries, renewable diesel plants, chemical processing facilities (such as propane/propylene splitter units), and power plants. PT&P has the capability to custom design and manufacture constant spring supports for specific load requirements and diverse environmental conditions. Notably, just last year we supplied similar constant spring supports carrying loads in excess of 150,000 lb for crude oil processing at one of the largest refineries in the world.
Petroleum refineries convert crude oil into products such as jet fuel, gasoline, polypropylene, polyethylene, propane, sulfur, carbon black feedstock, and diesel, which are used for transportation, heating, chemical feedstocks, power generation, renewable energy applications, and roadway paving.
Constant spring supports use a spring coil or series of coils to accommodate pipe movement from the installed (cold) condition to the operating (hot) condition. A defining feature of constant supports is that the supported load remains uniform throughout the entire deflection range, ensuring no variation in load on the piping or connected equipment.
These 200 U-Type constant spring supports with slide plates were designed for a plant in Texas. They are fabricated from A36 carbon steel with an HDG finish and are typically designed for vertical movement only. However, when there is lateral or axial movement in the piping system, slide plates can be used in conjunction with these constants. In this instance, graphite slide plates are bolted to the constant’s load flange and used with an upper slide plate manufactured from 304 stainless steel with a mirror finish. The upper slide plate can be welded to the base of a pipe shoe, trunnion, or the saddle of a pressure vessel. Each of the constant spring dimensions is 35-7/16″ in height and 75-3/4″ in length. They are designed for a piping system with 9″ of total travel at 979°F and an operating load of 6,183 lb. Each of these units were load tested to meet the hydro test load of 6,744 lb. before shipment.
Learn more about constant spring supports.
