Danfoss has been a pioneer in the production of hoses made with Teflon™ fluoropolymer® resin. Everflex hoses are ideally suited for use in applications where high and low temperature, chemical resistance, low coefficient of friction, flexibility, and non-aging characteristics are required. Since 1961, Everflex has been the premier brand of hose products made from Teflon™ fluoropolymer resin for use in truck, chemical, hot melt, paper and pulp, hot presses, steam, packaging, paint, machinery and many other demanding applications. The Winner PTFE compliments the Everflex portfolio, by adding a competitive, standard tier offering to Eaton’s PTFE family of products.
Smooth Bore vs. Convoluted
The primary differentiators between smooth and convoluted tubes are size and bend radius. Smooth bore hoses are generally only available in tube diameters of one inch or less, and they will have much greater minimum bend radii. For example, one inch smooth bore hose has a minimum bend radius of 12 inches while the same size convoluted hose has a minimum bend radius of only three inches. Convoluted hoses are also more resistant to collapse in vacuum. Smooth bore hoses tend to have a lower price than same-sized convoluted hoses.
Wall Thickness
In applications where a hose is flexed severely, thicker walls will provide better resistance to buckling. Thick wall hoses are also less permeable with both fluids and gases than thin wall hoses. Thin wall hoses tend to have a lower price because they contain less material. Most Everflex hoses are classified as either thin wall (.030”) or thick wall (.040”).
Fittings
Hoses made with Teflon™ fluoropolymer can use crimp, swage, or reusable fittings. The choice is largely one of individual preference, since there are no significant performance differences between the systems.
Interior & Exterior Treatments
Hoses exposed to severe environmental conditions can be fitted with several different forms of external protection. Options include extruded thermoplastic and silicone sleeves, slip-over or integral fire-resistant sleeves, and a variety of metallic and fabric protective braids. Hoses used in vacuum applications, particularly at high temperatures, are often fitted with internal coils or sleeves to prevent collapse.
Conductive vs. Non-Conductive Teflon™ fluoropolymer
Hoses, typically fuel lines carrying low-viscosity hydrocarbons at high flow rates, tend to build-up static electrical charges that can arc through the Teflon™ fluoropolymer to the braid. This can create a pin-hole in the Teflon™ fluoropolymer. Specifying conductive Teflon™ fluoropolymer will allow the static charge to bleed off harmlessly to the fitting.
Braid Material
304 Stainless is the baseline braid material for most hoses made with Teflon™ fluoropolymer. 316 Stainless is the recommended material for marine hose applications. Monel is available for hoses exposed to severe corrosion environments, and bronze is used in applications where hoses may rub together or against other pieces of equipment. In the latter case, the excellent lubricity of bronze often can deliver longer wear life than stainless steel. Braid material is also a major factor in the pressure rating for a given hose. Special braid materials and configurations are available to handle pressures up to 5,000 psi.
• Everflex hose made from Teflon™ fluoropolymer resin has excellent temperature characteristics. It works well in high ambient, fluid or gas media temperatures (+450°F). It works equally well in cryogenic applications (-65°F).
• Everflex hose has a broad range of chemical resistance. It is inert to most commercial chemicals, acids, alcohols, coolants, elastomers, petroleum compounds, solvents, vinyls, synthetic lubricants, and hydraulic fluids. Chemical Resistance Guidelines are found on pages I-2.
• Everflex hose withstands continuous flexing, vibration, or impulse.
• Everflex hose is compatible with steam. It absorbs no moisture, hot or cold.
• Everflex hose is noncontaminating Conveyed materials, fluids, or gases will not contaminate in service. It is easy to clean and sterilize for FDA or pharmaceutical applications.
• Everflex hose has high flow rates. Its low coefficient of friction with anti-stick properties insures continuous lower pressure drop during service with good pressure rating.
• Everflex hose resists deterioration. It is impervious to weather and can be stored for long periods of time without aging.
• Everflex hose has a long life expectancy when applied within its temperature and pressure ratings.
• Everflex hose can handle many substances such as adhesives, asphalt, dyes, greases, glue, latex, lacquers and paints. It has no carbon build-up when used as a compressor discharge line.
For use with hose: 2807, FC465, S-TW and SC-TW