Hydraulic hoses serve the primary function of transporting pressurized fluid between components in a hydraulic system, helping reduce steering effort and increasing efficiency.
High pressure hydraulic hoses come in an assortment of materials and come equipped with various working pressures. Furthermore, there are numerous fitting types available – understanding these details is key to selecting an appropriate hose for your application.
Flexible Metal Hose
Metal hose can provide flexibility, high cycle life and safe containment of pressure. However, its specific characteristics depend on corrugation shape, profile thickness and material type as well as working pressure, bending radius and application requirements.
For instance, stainless steel hoses tend to handle temperature extremes more efficiently than their non-metallic counterparts due to being corrosion resistant materials.
Typically, for constant, non-pulsating and non-shock applications the maximum working pressure should equal twice its burst pressure; flow velocity shouldn’t go beyond 150 ft/sec for gas and 75 ft/sec for liquids.
Flexi metal hose quality relies heavily on its production-related testing process, from initial material evaluation and analysis through dimensions, leakage and pressure tests to collar welding processes for inner corrugated hose and braided braid. As part of these procedures, braid collars play an integral part. Braid collars serve a valuable purpose when joining corrugated inner hose with braid to form one seamless unit during cap welding processes.
Braided Metal Hose
Stainless steel braiding enhances the strength and durability of flexible metal hoses, helping them withstand higher temperatures as well as protecting them against outside abrasion and damage.
An effective braid coverage design will effectively balance a hose’s pressure capacity with its flexing needs and minimize wear on its corrugation crown.
Braided metal hoses are among the most frequently seen metal hoses, being formed by grouping wires together and braiding them tightly before being attached to an inner tube using heat-resistant sealants.
No matter if it’s for water transfer or air or gas transmission, durable high-performance hoses are an essential element of any fluid system. Their use can prevent costly maintenance repairs while prolonging the longevity of equipment. Choosing an appropriate reinforcement style and size hose will reduce maintenance and repair costs and extend its longevity significantly.
Reinforced Metal Hose
Hose reinforcement components of any fluid system can have a dramatic impact on wear-and-tear wear and overall performance, so being familiar with various types of reinforcement hoses will allow operators to minimize maintenance and replacement costs and save on operational wear-and-tear costs.
A spiral wound metal wire or synthetic textile helix is the most frequently employed hose reinforcement style, offering support to inner tubes under low and medium pressure applications without bending or bulging. Another type of reinforcement used on suction and return lines is the helical wrap layer; although not as flexible, this helix layer resists impulse loads more effectively than others types of reinforcements.
Before selecting a specific hose, it is essential to carefully evaluate its application conditions, pressure and temperature of the hydraulic fluid, expected operating cycles and overall number of operating cycles expected. These considerations will ensure that its reinforcement design provides long-term productivity within any fluid system.
High Pressure Jetting Hose
By employing high pressure water jets, sewer jetting technology cleans and clears drains and sewers of blockages. A pressurized length of hose on a hydraulic powered reel (up to 500′ long) connected with a water jetting unit with an attached jetting nozzle at one end is connected with this water jetting unit; when released from this end they form a curtain of high-pressure water jets which force/rake debris downstream.
High-quality jetted hose is frequently employed for commercial cleaning applications, and comes in various sizes and specifications. Suited for hot or cold environments, its materials can withstand high levels of pressure, vibrations and temperature while most feature heavy-duty outer casing and reinforced lining to increase strength and longevity. In order to comply with BS EN standards it should not be re-ended; doing so may render it unsafe.