Hydrostatic & Pneumatic Testing

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

We are capable of precision cleaning and hydrostatic testing of cryogenic vessels and liquid fuel propellant systems. High purity gas systems and components may be pressure tested and gas quality certified to meet the required standard. Oxidizer gas systems (chlorine, oxygen or ozone) can be pressure tested and cleaned for oxygen service.

At our cleanroom or shop locations, we 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.

Astro Pak is fully equipped to offer Helium Leak Testing, Vacuum Bakeout, and RGA alongside our Precision Cleaning, Passivation, and other related offerings. Our Downey facility houses a large 78” Diameter x 144” Length Vacuum Chamber with heat capability and a fully computerized Mass Spectrometer designed to meet your toughest leak rates. Please contact us today for a consultation or quote.

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
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