Haskel Booster Technician

Haskel Oxygen Booster Pump – Strip down/rebuild course – 4 Days

Haskel AGT Series Oxyge gas booster pumping unit

haskel 26968 oxygen haskel booster pump

 Learn how to use both Haskel 26968 & SITEC GBT15/45 models with 100% oxygen up to 207bars/3,000psi … Then strip one down, rebuild and test it to manufacturer specifications

Haskel Oxygen Booster strip down rebuild course Brochure 

A new course introduced by popular demand from DITC students to teach the skills necessary to service and repair the Oxygen Booster pumps that support rebreather operations worldwide. More than 10,000 recreational rebreathers are now in use, which together with a century of military rebreather use in the worlds navies generates a requirement for technicians with the specialist skills to service these items.

The course covers general maintenance, operation, standards and relevant legislation across all major manufacturers products.

For further information or to book a course please click here

Haskel Oxygen Booster Pump Academic Development Work (day 1)

  • Basic operating principals.
  • Types of Booster pumps.
  • Operator Instructions for safe usage.
  • Air facts drive issues and safe pumping rates for 100% oxygen usage.
  • Explosion hazards.
  • Single stage Haskel pumps advantages and disadvantages.
  • Double stage Haskel pumps advantages and disadvantages.
  • Choice of pumping ratio – efficiency versus Bank gas usage.
  • Drive gas requirements – the need for large LP compressors.
  • Dry lubrication engineering – separation of ‘dirty’ LP drive gas and pumped HP oxygen.
  • Oxygen Service materials and engineering used in the Haskel pump.
  • Freezing issues and prevention when operating the unit at low temperatures.
  • Calculation of stall pressures.
  • Understanding shuttle valve operation. Remote start stop features. Servicing issues.
  • Spare parts ordering.
  • Manufacturers product reviews.

Workshop Session (day 1)

  • Hands on user servicing and run up tests. (all models).
  • Pump/’jam’ an oxygen cylinder to 207bars/3,000psi.
  • Using Haskel double action 26968 block and SITEC GBT15/45 units.

Workshop Strip down/rebuild session Days (2,3,4)

* Chose from either:- Haskel 26968 Pumping unit or SITEC GBT15/45 pumping unit 

  • Remove and replace low pressure drive system. Clean and re-assemble cyklon debris filter/water trap.
  • Remove and replace High Pressure Oxygen input and output pipework.
  • Remove and replace Plenum intercooler and associated Joule-Thompson cooling pipework.
  • Remove and replace cylinder heads.
  • Remove and replace cylinder barrels.
  • Remove and replace barrel Joule-Thompson cooling jackets.
  • Examine cylinder barrels for damage, wear and Oxygen cleanliness.
  • Examine Air drive barrel and shuttle valve components for wear.
  • Strip down and re-assemble all one way poppet valves in the cylinder heads.
  • Strip down and replace both piston head seal packs.
  • Strip down and replace piston thrust rod/air drive seal packs.
  • Strip down and service end of travel sense valves.
  • Proof Test compressor to 225 bars/3,250psi 100% Oxygen to confirm oxygen safety valve functionality and oxygen cleanliness.
  • Check unit functionality at 25 psi drive pressure.


  • ASSET/IDEST approved Haskel Oxygen Booster Pump Maintenance Certification establishing the legal competent person status of the technician to work on these systems.
  • All student training Manuals used during the course + online access to the ScubaEngineer.com technician database.
  • All spare parts & consumables used during the course.
  • Free Tea/Coffee and high speed Wi-Fi internet access at the training center.


  • Applicant must show proof of Oxygen service technician training (Any agency accepted)

Key Benefits

  • Prevents costly damage to the Haskel unit through incorrect use/lack of proper maintenance
  • Provides proof of formal Haskel pump service & repair training. When a new Booster pump stops working, manufacturers often blame the operator or the owner if the person responsible for the unit has no training. If the Haskel Booster pump operator has formal training and the unit was being maintained and used correctly, the blame for the system failure shifts to the manufacturer,  supplier or previous repair agent involved in servicing the unit.

For further information or to book a course please click here


Training Center Information


Capabilities of Easytek Engineering Services Co Ltd., as an Engineering Training Provider

Click here to download Easytek Co Corporate profile (2.3Mbyte)

Easytek Engineering Services Co Ltd., together with STATS in the United Kingdom have provided a unique service to Commercial Diving Companies, Military Diving Teams, Government Inspectors, Recreational Dive Centres, SCBA, ELSA, HEED Life Support Technicians, High Pressure Cylinder Inspectors, and other Dive Industry Professionals internationally for more than 20 years drawing on the wide experience of its principal staff. Principle capabilities include:

  • Divers and other SCBA life support equipment maintenance – regulators, compressors, cylinders, rebreathers, hydrostatic test equipment design, NDT analysis
  • Commercial diving, & Maritime consultancy. Dive incident investigation & expert witness testimony
  • Custom Decompression methodology for 1,000ft Trimix diving.
  • Approved engineering training. International recognised certification in Trimix Decompression diving, sunken vessel survey, underwater artifact & body recovery.
  • Repair, servicing & testing traceable to National standards. Design, Manufacture and sales of custom tools, adapters and test equipment for Divers life support equipment servicing and other critical high pressure applications.

Easytek has the most modern divers life support equipment service center and mixed gas production system in Thailand. All mixed gases can be pumped to 350bar via in house Haskell booster pumps powered by twin Bauer Compressors feeding a 90,000Liter air bank. Easytek carries out hydrostatic tests in house to 650bar/10,000psi to US DOT standards, European EC, British BS and Thai standards supplemented by the very latest NDT eddy current testing to detect metallurgical failure aluminium alloy high pressure gas cylinders.

For further information or to book a course please click here