Understanding The Flexibilities Of Hose

By Author: Salvatore Andrea
Total Articles: 6244
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Any water work design is dependent on the hose. Hose plays a major role in the transport of the fluid. Based on the type of fluid being transported, the material and the type of hose is decided. Hose basically is a hollow tube and can also be referred to as a pipe. Generally, the pharmaceutical hose is a preferred name as the terminology pipe is used for rigid tube. On the contrary, hose is flexible, cylindrical with a circular cross section. Hoses are designed based on the application and performance requirement. Few parameters like chemical compatibility, pressure rating, weight, length, coil hose or straight hose and size are considered while designing a hose.

The application area of the chemical hose determines the material of the hose. The material can be either a single type or can be a combination of different materials. The usually used materials are nylon, PVC, polyethylene, polyurethane, natural rubber and the synthetic rubber. In the current times, the LDPE and LLDPE materials are used. These materials are the the derivatives of a special grade ...
... of polyethylene. Other materials such as PTFE, stainless steel and Teflon are also preferred.

Industries such as Pharmaceutical requires a special type of hoses as the properties of fluid transferred is varied and different. Also, the hoses should be more flexible. Special treatment or lining is required to ensure hoses are performing. The pharmaceutical hose should be tough, flexible, resistant to high pressure and vacuum and should be compatible for a range of chemicals. The preferred material in this case is PTFE. PTFE is chemical resistant, non reactive and non contaminating for different fluid and chemical types. The chemical hose should also be easy to clean and maintain. It should also be non sticky and should be capable of handling high temperature and acids, alcohol, bases etc.