SP Hull Freeze Drying Process Vessels

Hull fabricates pressure vessels in-house for increased control over quality and lead time and to provide for a greater range of customer options.

Hull's designs and fabrications are certified to the American Society of Mechanical Engineers (ASME) section VIII Division 1 standards for unfired pressure vessels. The ASME code for pressure vessel design and fabrication is recognized throughout the world for its high standards of quality and safety. Steam-In-Place pressure vessels to 30 PSIG are routinely designed and built as are vessels requiring special stoppering forces and non-standard structural configurations.

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  • ASME Certified Pressure Vessels

    ASME Certified Pressure Vessels

  • ASME Certification Codes

    ASME Certification Codes

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All pressure vessel engineering is done in-house using ASME design guidelines and calculations and is independently checked by ASME Certified Inspectors. Hull's processes and procedures are extensively documented and are periodically reviewed by its ASME underwriter and the state of Pennsylvania. Hull's welders have passed rigorous testing in the various welding procedures and are certified to applicable ASME standards. All material is purchased with chemical and physical certifications and is fully traceable.

Non-code components are fabricated to the same high standards and with the same craftsmanship and materials as the ASME code components. Hull does not need to rely on outside fabricators who may not specialize in the fabrication of high quality sterile processing equipment.


In addition to the design and fabrication of new vessels, we are fully qualified to repair and modify existing ASME code vessels. Our ASME engineering and fabrication capabilities can be applied to the refurbishment of Lyo Renewal used equipment or to field modifications and retrofits.

Project schedules and costs benefit from our tight in-house control and the result to our customers is higher quality and better control over equipment delivery schedules.

    Hull's ASME code certification covers:
  • Quality Control
  • Drafting Standards
  • Design Calculations
  • Material Control
  • Fabrication Tolerances
  • Machining Tolerances
  • Inspection and Testing
  • Calibration
  • Documentation Standards