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Clean Assembly

Astro Pak provides the highest quality standards in assembling precision clean hardware. We clean and assemble almost any type of hardware imaginable for contamination sensitive industries. Whether its a small valve or a big tank, we have space available in our certified cleanrooms. Hardware we routinely assemble include valves, regulators, gas and fluid transfer panels, tube piping systems that require precision cleaning.

To ensure absolute cleanliness, we verify cleanliness levels using different types of tests. This includes optical particle counters and gravimetric NVR equipment, photoionization detectors for solvent detection as well as dryness verification and digital dew-point meters for water dryness verification. Additionally, fume hoods, laminar flow hoods, and a complete wet chemistry laboratory for research and development complement the cleaning and testing services.

What is Clean Assembly?

Clean assembly is a unique field requiring special environments, hardware, and techniques. The interaction of precision cleaned surfaces with tools and a worker’s hand can reintroduce contaminants to the surface, resulting in a degradation of cleanliness that is progressive as an assembly is carried out. It takes special training to recognize where an assembler must utilize the techniques that will prevent such inadvertent re-contamination. The environment that such clean assembly takes place must also limit re-contamination that can occur from airborne contaminants depositing onto the clean surfaces being worked on.

Clean assembly is performed in a cleanroom by workers wearing special garments that prevent contaminants from the worker’s body – skin cells, hair, and skin oils – from being deposited onto the clean surfaces of hardware. The worker also uses precision cleaned tools to perform the assembly, preventing the inadvertent transfer of contamination from a tool to the parts. The techniques must avoid the generation of contaminants from metal to metal friction, or be designed to deal with those types of friction-generated contaminants by removing them from the environment as quickly as they are generated and thus preventing them from depositing onto clean surfaces.

It takes all of these things to correctly perform clean assembly – specially trained workers, a clean environment with a lack of airborne contaminants, special cleanroom garments that catch contaminants, precision clean tooling, as well as techniques & equipment that maintain cleanliness while work is taking place.

Trust the Experts

With over 60 years experience, Astro Pak Corporation are the leaders in assembling precision clean hardware. Not only do we clean and package, but we also assemble items ranging in size from small fasteners to huge vessels. Our clean assembly and cleanroom packaging services also meet the requirements of literally hundreds of industry specifications. This includes aerospace contractors, ULA, NASA, the Department of Defense, and many private industries and organizations.

Our most notable location in our California AS9100 / ISO Certified Class 5 (class 100) and Class 6 (Class 1000) cleanrooms. However, we also offer this service in our newest location in Florida. Hardware that enters our cleanroom includes a real-time electronic tracker to keep customers better informed on the status of order. In addition to cleaning and packaging, we also allow customers to come onsite and assemble their own parts after cleaning.

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

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

In addition, our Certification packages are QMS/cGMP compliant for your systems and equipment maintenance records.  Let our experienced and credentialed team of chemists, engineers, and other professionals on staff EXCEED your expectations. Contact us today for more information.

We Can Meet Your Cleaning Standards

Astro Pak is capable of performing clean assembly to the specifications requirements. Whether its valves, regulators, gas and fluid transfer panels or tubing / piping systems,  we can do it all! Some of the specifications that we routinely meet include:

  • CGA 4.1
  • IEST-STD-CC-1246
  • Praxair GS-38
  • ASTM – G93
  • ANSI B 40
  • SAE 1176
  • KSC-C-123J
  • SAE ARP 1176

We also will meet Individual Private Industry and Government Specifications – call us for information!

Component & System Experience

  • Components & Hardware
  • Fittings, Fasteners
  • Valves (Relief, Ball, Butterfly, Needle, Gate, etc)
  • Gauges (Pressure, Flow meter, Hydraulic, Cryogenic)
  • Miscellaneous Assemblies
  • Transducers & Sensors
  • Equipment or sub-systems
  • Manifolds
  • Oxygen & Critical Gas / LOX Tubing and Componentry
  • Laser & Optics Componentry
  • Hydraulic componentry
  • Medical Devices
  • Filters & Filter Housings
  • Heat Exchangers
  • Spacecraft Launch Vehicles

Markets Served

  • Aerospace, Military & Defense
  • Laser
  • Medical Device
  • Oil & Gas


  • Semiconductor
  • Healthcare
  • Power Generation
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