Hydrostatic & Pneumatic Testing

Astro Pak provides in-house and onsite Hydrostatic & Pneumatic Testing of gauges, valves, tubing assemblies, and other components, as well as in-place systems, vessels and equipment. Hydrostatic & Pneumatic Testing can be performed together with precision cleaning, passivation, cleanliness certification, or clean assembly operations.

Hydrostatic & Pneumatic Testing is essential for systems that operate under pressure, as these systems typically require validation prior to operational start-up. We understand the importance of safety when operating at high pressure and as a result, developed industry leading safety guidelines. In addition to Hydrostatic & Pneumatic Testing, Astro Pak routinely performs passivation, packages and Assembles parts

We are also capable of precision cleaning and hydrostatic testing of cryogenic vessels and liquid fuel propellant systems. High purity gas systems and components are pressure tested and gas quality certified to meet customer standards. Pressure Tests and Oxygen Cleaning is available for Oxidizer gas systems (chlorine, oxygen or ozone).

Astro Pak can hydrostatic pressure test up to 30,000 psi, and pneumatic pressure test up to 10,000 psi. We test using NIST referenced calibration and certification to ASTM standards. We also routinely complete military standard requirements. Whether you require ASME B 31, KSC C 123H, MIL-STD 1330D, MIL-STD 419D, NFPA 99C and more, we can test your parts!

In addition, Astro Pak offers Helium Leak Testing, Vacuum Bakeout, and RGA alongside our Precision Cleaning, Passivation, and other related offerings. Our Downey facility houses a large Vacuum Chamber and a fully computerized Mass Spectrometer designed to meet your toughest leak rates. Contact us today for a consultation or quote.

Trust the Experts

With over 60 years of experience, Astro Pak has gained experience and expertise for testing a variety of different fabrication materials including stainless and carbon steel, composites and other exotic alloys and materials. Our state-of-the-art testing equipment validates thousands of vessels, pipelines, valves, filters, pumps, and more.  Accordingly, our highly trained technicians and management staff have a keen understanding of ASME, ASTM and other testing specification authorities. Astro Pak stands ready to answer your questions about Hydrostatic and Pneumatic Testing .

Astro Pak commits to providing customers with the level of excellence they expect and deserve by:

  • Rapid Response
  • Highly Trained Personnel delivering superior consulting services
  • State of the Art Equipment Nationwide
  • Advanced Chemistry & Process Technology
  • Superior Documentation (Meeting cGMP Requirements)

Let our experienced and credentialed team of chemists, engineers, and other professionals on staff EXCEED your expectations.

Systems & Equipment Experience

  • Hydrostatic Pressure Test up to 30,000 psi
  • Pneumatic Pressure Test up to 10,000 psi
  • Gas Systems
  • Tubing & Hoses
  • Valves (Relief, Ball, Butterfly, Needle, Gate)
  • Gauges (Pressure, Flow meter, Hydraulic, Cryogenic)
  • Specialized Customer Equipment
  • Product & Distribution Piping


  • ASME B 31.1
  • MIL-STD-1330D
  • MIL-STD-419D
  • Other ASTM Specifications

Markets Served

  • Food & Beverage
  • Aircraft, Military and Defense
  • Biopharmaceutical
  • Semiconductor
  • Heath Care
  • Household Personal Care
  • Medical Device
  • Oil & Gas
  • Mining & Metals
  • Chemical Distribution & Manufacturing
  • Power Generation
  • Water & Wastewater Treatment
  • Laser
  • Lifesciences
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