When it comes to hoses and cold weather performance, force to flex is not as important as actual hose construction. In harsh winter temperatures, hose construction materials can be a major contributor to hose failure. Over time, cold temperatures and UV rays dry out the core and jacket of a hose. This embrittlement of materials results in cracks. Cold sluggish fluid or low temperature fluids not compatible with the core materials can also add stress and cause damage.
Parker engineers have been working closely with machine and vehicle designers for more than 30 years on the selection of optimal hoses. The added stress of colder environments, led them to design the new, low-temperature hydraulic hoses which operate in temperatures as low as -70°F/-57°C with pressures operating up to 5,000 psi (345 bar).
This new technology for low-temperature hydraulic systems has proven itself in a variety of different low and high-pressure applications, especially forklifts and aerial lift equipment or used in commercial freezers in harsh winter conditions. Applications range from the low-pressure fluid transfer, over-the-sheave, and steering lines to high-pressure hydraulics.
Parker low-temperature thermoplastic hoses are built with a proprietary blend of materials specifically formulated to withstand repetitive flexing in cold temperatures. The 563LT and 594LT offer the same abrasion resistance as Parker's standard hose but decrease component downtime in low temperatures. The ability of these hydraulic hoses to perform repetitive flexing in a cold environment opens a new range of possibilities for the industry while increasing product life. For the customer, excelling in cold climates means reduced change-outs, reduced warranty maintenance and replacement costs.
Each hose is reinforced with either synthetic fibers, steel wire, or a layer of each, which enables assemblies to handle up to 5,000 psi (345 bar) working pressure (depending on hose selection). Available core tube options have a low coefficient of friction while maintaining excellent flexibility and a premier, abrasion resistant cover. This maximizes efficiencies and minimizes pressure losses to ensure long service life.
Temperature deformation of the product does not affect the assembly’s chemical compatibility, technical performance or functionality. In addition, hose covers are durable and insensitive to UV or ozone exposure and thus, resistant to environmental stress.
Find out more about Parker's low temperature thermoplastic hose.