Mistakes Avoiding When Use PTFE Tubing

Update:15 Aug 2017
Summary:

China PTFE tubing are rarely used in conventional hydra […]

China PTFE tubing are rarely used in conventional hydraulic or pneumatic systems, but dominate in aerospace and harsh industrial environments. This is how to choose the right tubing and avoid some common mistakes when doing so.

There are differences between the materials used in the hose, so the use of the same substrate of the hose, such as PTFE is different. The following are some of the basic features that need to be considered when selecting a hose for a particular application.

Smooth or pleated holes The main difference is size and bend radius. Smoothing holes are usually available only at 1 inch or less of aperture size. For that size, the minimum bend radius of the smooth hole hose is 12 inches, and a circular hose has 3 inches. Minimum bending radius.

Conductive or non-conductive? Fuel tubes that carry petrol or other low-viscosity hydrocarbons at high flow rates often produce static charge that can pass through the braids and produce pinholes in PTFE. Specifying conductive polytetrafluoroethylene will allow static charge to be leaked to the accessory.

Wall thickness Thicker walls are better for hose bending and bending applications because they are more resistant to bending. Thick-walled hoses are also less permeable to gases. Thin-walled hoses tend to be less expensive because they contain less material.

Weaving material Type 304 stainless steel is the baseline braided material for most Teflon hoses. It is recommended to use 316 stainless steel for marine hose applications. Can be used for exposure to severe marine corrosive environments, bronze can be used for marine applications, and hoses can be friction or friction with other equipment. In this case, the excellent lubricity of bronze may extend the service life than stainless steel.