A hose is an important accessory that sends the pressurized air flowing out of the compressor to attached application tools. Hose conveys the air flow and acts as connection between the two systems. All are familiar with the air hoses used in garages to inflate tires with air delivered by a compressor. However there is variety of hoses according to diameter, length and material which also determine their price.
While air compressor generates high pressure air, some connection is necessary to deliver the air flow from compressor outlet to the application tool. Hose pipe connects the two systems or dispatches air flow to the action site by two adapters fixed at its two ends. The compressed air flow may be necessary for functioning a nail-gun, sander, drills, paint guns and many other pneumatic tools and appliances that do not work on electricity. The compressor may be stationary and the application tool or site may be distant from it. Sometimes heavy portable compressors are carried by a car to the jobsite which may be a construction area and the compressor may need to deliver air flow to various pneumatic appliances from the car. Air compressor hose comes into play in these cases.
For general purpose and household applications a 25 ft long and 1/4 inch to 3/8 inch diameter hose is sufficient. Apart from these two common measures, other diameter hoses are also available for industrial purposes. Good quality hoses should be flexible, durable and withstand high temperature. The connectors at the two ends may be turned by a lathe or molded in parts. Lathe shaped connectors are durable while molded ones tend to crack or leak fast. Hose pipe should be free from leak and protected from damage during use. Connecting good quality hose at the application tool side gives better air flow supply. Long hose pipes come coiled up in a reel which can retract the hose. A good quality reel provides protection to hose pipes and house them inside a metal casing.
Body material of the hose is very important. Generally Polyurethane (PUR or PU), a polymer of organic units linked by urethane or carbamate linkage are used to manufacture high pressure compressor hose. This compound is physically flexible, resilient, lightweight, and can withstand frictional wearing to some extent. Poly Vinyl Chloride (PVC) is another synthetic material composed of thermoplastic polymers which is used to make hose for special applications. They can withstand high pressure up to 145 PSI or more. Rubber is the most preferred material for hose pipes. They are abrasion resistant, withstand high temperature and pressure and highly flexible.
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