When selecting a suitable rubber pipe for a specific application, you should focus on these basic points.
Pressure and Suction
When determining the pressure, consider sudden pressure changes. If the pressure exceeds a critical value, it can shorten the rubber hose’s normal service life.
Medium of the Rubber Hose
First, identify the medium’s features, name, temperature, and state (liquid, solid, or gas). If the medium is solid, also note the particle size, density, and quantity. For liquids carrying solid particles, know the flow rate and velocity.
Working Conditions
Next, consider the working environment, including the installation location, temperature, humidity, and exposure factors. Factors like UV rays, ozone, seawater, and chemicals can cause flexible rubber hoses to degrade prematurely.
Mechanical Stress
Additionally, assess the mechanical stress, including the minimum bend radius and forces from pulling, torsion, bending, or vibration.
Exterior Layer Wear
Although rubber hoses offer good wear resistance, vibration, corrosion, or dragging can still damage the hose. Therefore, protect the hose—for instance, by using a spiral guard to prevent wear.
Work Location
Also, note whether the hose needs to be suspended, submerged, or placed on the ground.
Connection Considerations
Choose connections based on the following:
Rubber Hose Fittings and Flanges: Type, size, thread type, reference standard, and usage scenario.
Joint Core: Inner diameter, outer diameter, and length.
Sockets/Crimps: Type and size.
Ensure the fittings match the rubber hose properly. The working pressure of the hose assembly must meet industry standards.
Technical Standards
Comply with relevant technical standards. For special – purpose hoses, the supplier should provide detailed installation instructions.
Marking
Rubber hose suppliers typically mark hoses with essential information to guide proper usage and maintenance.