Oxygen and nitrogen refilling hoses are specialized, high-pressure conduits designed to safely transfer high-purity gases between storage tanks, bulk containers, and smaller cylinders. Unlike standard air hoses, these refilling lines must withstand extreme pressures—often ranging from 2,000 to over 3,000 psi—and are constructed with a focus on gas permeability and material compatibility. Oxygen hoses, in particular, require strict adherence to 'oxygen cleaning' standards to remove all traces of oil, grease, or hydrocarbons, which could cause spontaneous combustion when in contact with pure high-pressure oxygen.
The construction of these hoses typically features a multi-layered design for maximum durability and safety. The inner core is frequently made of high-grade PTFE (Teflon) or specialty thermoplastic, chosen for its chemical inertness and low gas diffusion rates. This core is then reinforced with one or more layers of high-tensile Stainless Steel (SS 304 or 316) wire braiding. This outer braiding not only protects the hose from external abrasion and kinking but also provides the structural strength necessary to contain the high internal gas pressures without bursting.
Safety features are a critical component of refilling hoses, given the hazards associated with high-pressure gas handling. Many industrial refilling hoses are equipped with safety whip-socks or 'anti-whip' ropes at each end. These secondary restraints prevent the hose from violently thrashing or 'whipping' if a fitting fails under pressure, which could otherwise lead to severe injury or equipment damage. Additionally, color-coding is often used to prevent accidental gas cross-contamination: black or green is industry-standard for oxygen refilling, while nitrogen lines may be marked differently to ensure they are never interchanged.
Discover the wide range of industries and applications where Oxygen And Nitrogen Refilling Hoses delivers exceptional performance and reliability.
Thus, at hospitals, ambulances and clinics there are numerous oxygen hoses filled with medical oxygen for resupplying the cartridges. While they are used in life-supporting applications, it should go without saying that these hoses have to meet high standards on safety, cleanliness and performance.
Meanwhile, oxygen hoses are used in welding and cutting applications to refill the supply of Oxygen Cylinders as configured within Oxy-fuel systems (e.g. oxy-acetylene cutting) Because they must be designed to resist high pressures, these hoses have an added level of durability needed for industrial applications.
One of the most common uses involves nitrogen as a pressurant for aircraft tires, actuation controls and fuel tank inerting, oxygen is critical in life support systems. Hoses for oxygen and nitrogen are used to replenish tanks as well in these applications, where safety is a top concern.