Choosing the right pneumatic hose, tubing and how to use it?

The fundamental function of pneumatic tubing and hose is to transport pressurized air to actuators, valves, tools, and extra devices. There are various types & sizes of hoses and tubing in the market, hence one should consider a number of important factors when selecting the right one.

Firstly, it’s construction.

Tubing for air applications may be squeezed out of a single material or reinforced internally, normally with textile fibers for greater strength. Pneumatic hose usually entails an inner tube, one or more layers of strengthening braided or spiral-wound fiber as well as an external protective cover. In general terms, a hose is rougher than tubing but it costs more.

Flow requirements help control hose or tubing size. Tubing is usually specified by OD and wall thickness, meanwhile, a hose is indicated by ID. Nevertheless, choosing too small an inner diameter “chokes” flow and outcomes in pressure losses, ineffectiveness and extreme fluid velocity that can shorten service life. Whereas, if it’s too large a diameter, it results in higher than necessary weight, size and cost.

There are 2 common physical characteristics to ruminate when choosing tubing, which is flexibility and kink resistance. It’s usually very subjective, but it’s best to compare samples rather than to completely rely on the manufacturer’s literature. An additional physical attribute is a colour. Tubing comes in a variety of colors as well as clear, subjected to the compound.

Meanwhile, do not overlook the effect of temperature and heat on tubing material, both inside as well as outside the assembly. It always has to operate within a minimum and maximum temperature limits. Particularly, be conscious that eminent temperatures will effect working pressure, particularly as tubing materials reach their upper-temperature limit.

Fittings are generally used to build pneumatic tubing and hose assemblies for assembly.

This can include any types of fittings such as push-in fittings, KJ Series Miniature Push-in Fittings, KQ2 Series Push-in Fitting, Speed Controllers, Metal Push In Fittings, Rapid Metal Fittings as well as couplers.

It is important to ensure that the fitting and tubing or hose are compatible with each other. Other significant considerations for fittings include ease of installation, pressure-holding capacity, size and weight, corrosion resistance and cost.

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