The term jacket refers to insulators that are used for covering processing components. These components vary a lot and they include filters, pumps, valves, pipes, and accessories. The main purpose that jackets are used to serve is to provide thermal insulation. The cover is wrapped around the item by joining hooks firmly together using ropes. This setup is to be maintained as long as the item is in use.
There is a wide range of thermal-jacketed products that are used in various industries. Jacketed valves are used for both inorganic and organic chemical processors. Some of the industries that find use for jacketed products include petroleum plants, food processors, polymer producers, and pharmaceutical plants among others. There are three broad classifications for jackets, that is, hybrid, swaged, and standard systems.
The most often used system of jacketing is standard jacketing. Preference for standard jacketing is as a result of its capacity to permit even heat distribution by having pipes and valves covered right from the flange. What this implies is that oversize valves are to be used in order to cater for bolts.
Swaged jacketing is not in common use. It is only used in special cases. For instance, it finds use in cases where cross-contamination needs to be prevented. One condition of using swaged jacketing systems is that temperature discontinuities at the flanges must be able to be tolerated. Usually, swaged jacketing are cheaper in comparison to standard jacketing. The reason for this is that small in-line flanges can be used with swaged jacketing to form what is called partial or capped jacketing.
As suggested by the name, both swaged jacketing and standard jacketing can be combined to produce hybrid jacketing. Hybrid jacketing may also use removal and/or special jacketing. Swaged jacketing can be used to jacket straight-line piping. On the contrary, standard or removable jacketing can be used to jacket valves and fittings. This would assist in preventing discontinuities of temperature at very important flow areas.
All valve types can be jacketed seamlessly, thanks to contemporary technology. Standard fabrication technique allow for modification of valves using a number of techniques. Normally, the valve body is elongated as required in order to reach specific standards. The jacket is added upon completion of the modification. After the jacketing, the valve has to maintain an internal tolerance similar to that of the unjacketed valve.
There are many reasons that make it necessary to place a jacket around a valve. These reasons are also the advantages of jacketing. First, jacketing makes it possible to maintain processing temperatures within close tolerances. Secondly, high rates of heat transfer are achieved from the heating medium to the process. Lastly, it is possible to do unit construction with jacketing.
A few shortcomings are also involved in jacketing as well. They include availability of a limited selection of jacketed components and relatively long deliveries for the components. Secondly, there is a lack of industry-wide fabrication standards. This has led to major inconsistencies in products and components produced.
There is a wide range of thermal-jacketed products that are used in various industries. Jacketed valves are used for both inorganic and organic chemical processors. Some of the industries that find use for jacketed products include petroleum plants, food processors, polymer producers, and pharmaceutical plants among others. There are three broad classifications for jackets, that is, hybrid, swaged, and standard systems.
The most often used system of jacketing is standard jacketing. Preference for standard jacketing is as a result of its capacity to permit even heat distribution by having pipes and valves covered right from the flange. What this implies is that oversize valves are to be used in order to cater for bolts.
Swaged jacketing is not in common use. It is only used in special cases. For instance, it finds use in cases where cross-contamination needs to be prevented. One condition of using swaged jacketing systems is that temperature discontinuities at the flanges must be able to be tolerated. Usually, swaged jacketing are cheaper in comparison to standard jacketing. The reason for this is that small in-line flanges can be used with swaged jacketing to form what is called partial or capped jacketing.
As suggested by the name, both swaged jacketing and standard jacketing can be combined to produce hybrid jacketing. Hybrid jacketing may also use removal and/or special jacketing. Swaged jacketing can be used to jacket straight-line piping. On the contrary, standard or removable jacketing can be used to jacket valves and fittings. This would assist in preventing discontinuities of temperature at very important flow areas.
All valve types can be jacketed seamlessly, thanks to contemporary technology. Standard fabrication technique allow for modification of valves using a number of techniques. Normally, the valve body is elongated as required in order to reach specific standards. The jacket is added upon completion of the modification. After the jacketing, the valve has to maintain an internal tolerance similar to that of the unjacketed valve.
There are many reasons that make it necessary to place a jacket around a valve. These reasons are also the advantages of jacketing. First, jacketing makes it possible to maintain processing temperatures within close tolerances. Secondly, high rates of heat transfer are achieved from the heating medium to the process. Lastly, it is possible to do unit construction with jacketing.
A few shortcomings are also involved in jacketing as well. They include availability of a limited selection of jacketed components and relatively long deliveries for the components. Secondly, there is a lack of industry-wide fabrication standards. This has led to major inconsistencies in products and components produced.
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