Six criteria for metal hose selection

The static water pressure test is a process in which a liquid (usually clean water) is used as the pressure medium and a stable static water pressure is applied to the test object through specific equipment to evaluate its specific performance. This method allows for the precise detection of tiny cracks, pores, or other defects inside the hose.

The static water pressure test is a method used to assess the pressure resistance and sealing performance of pipelines, vessels, or other pressure-bearing components. It is widely used across various industries, especially in applications involving the transfer of liquids or gases.

Test Method

• Filling medium: Usually water, but oil or other liquids can also be used.
• Pressurization: The equipment is pressurized to the specified test pressure, typically 1.5 times or greater than the working pressure.
• Pressure holding: Maintain the test pressure for a certain period, usually ranging from 30 seconds to several hours, depending on relevant standards and specifications.
• Inspection: Check for leaks or deformation through visual inspection, pressure gauge readings, or other methods.

Test Equipment

• Hydrostatic pressure testing machine (specific pressure source)
• Test medium (water)
• Pressure sensor
• Data acquisition system

Testing Procedures

• Preparation:
  • Thoroughly clean and inspect the specimen to be tested, removing any impurities that could affect the test results.
  • Install the required sensors and instruments to accurately monitor all data during the testing process.
• Filling and Air Evacuation:
  • Fill the test object with an appropriate amount of water or other suitable liquid medium, and thoroughly remove any air to prevent bubbles that could compromise test accuracy.
• Pressurization:
  • Gradually increase the pressure to the specified value, typically about 1.5 times the design working pressure; the exact value should be determined according to relevant standards or manufacturer specifications.
  • Maintain the target pressure for a specified duration (such as from 10 minutes to several hours), and observe for any abnormal conditions.
• Inspection and Recording:
  • Check the surface of the sample for any signs of leakage, utilizing dye or other visual aids to identify tiny leak points.
  • Record the pressure variations throughout the test and any phenomena observed.
• Depressurization and Cleaning:
  • Slowly reduce the pressure to zero to avoid damage caused by sudden decompression.
  • Drain the test liquid, clean the sample, and restore it to its normal working condition.

Application Fields

• Manufacturing and maintenance of pipelines and pressure vessels.
• Inspection of firefighting equipment.
• Pressure resistance testing of hoses in the automotive industry.
• Equipment inspection in the oil and gas industry.

Pressure Test Video