Services

Hydrostatic Pressure Testing

Hydrostatic pressure testing, also known as hydrostatic testing or leak testing, provides a method for finding leaks or verifying performance and durability in pressure vessels. The hydrostatic pressure test is classified as one of LTI’s nondestructive testing techniques, meaning the sample is typically not harmed during the test.

Hydrostatic Pressure Testing at LTI

The procedure used for hydrostatic pressure testing entails the following steps:

  • Filling the test piece with water or oil
  • Removing air from the test piece
  • Pressurizing the vessel to the appropriate PSI
  • Examining the test piece for any leaks or changes to shape

A decrease in the applied pressure, leakage through the product, or deformation, distortion, or bulging in the product indicates inadequate vessel quality. Hydrostatic testing can also be performed by filling the piece with air while submerged under water.

LTI is equipped to perform hydrostatic pressure testing using water, oil, or air, depending on the specification and customer requirements. The most common method of hydrostatic testing is with water as the test medium because it is less expensive than oil and easier to set up than pneumatic (air underwater).

Capabilities

  • Products Tested – tubing, pipe, coils
  • Testing Medium – water, oil, air (under water)
  • Pressure to 10,000 PSI

Standards

  • ASTM
  • ASME
  • AMS
  • MIL specifications
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The LTI Advantage

LTI performs hydrostatic pressure testing of tubing, pipe, and coils up to pressures of 10,000 PSI at our facility near Philadelphia. The hydrostatic test is often ordered with our ultrasonic testing (UT) service. Our state-of-the-art UT/hydro facility has an automated identification marking system for tubing, pipe, and bar.

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