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SINCE 1979

Cryogenic Pumps & System,Pumps,Motors,

Engineers & Consultants

 Welcome to PSL

Pryor Service Ltd. was incorporated in 1979 and specialises in services and repair of liquid gas pumps for use with LPG, LNG and Ammonia products.  Predominately used in the gas industry. Shipping unloading pumps and gas processing plants, our clients include many of the large shipping and oil and Gas operators throughout the world. We operate globally and are based in our modern UK based Facility on the South coast of UK.  We offer consultancy and  service repair all makes of cryogenic equipment using OEM parts and procedures and operate to ISO standards. 

PSL was awarded "Authorised Repair Centre" by Ebara International Corporation USA in 2012-2024, and has been involved with cryogenic equipement  for over 40 years.



Established in 1979 we specialise in the service and repair of cryogenic pumps and systems. Our clients include many of the large shipping and oil and Gas operators throughout the world. We operate out of our state of art UK based Facility on the South coast of England. We service are repair all makes of cryogenic equipment using OEM parts and procedures and operate to ISO standards. PSL has been serving  the gas industry worlwide for over 40 years.


LPG LNG Cargo pump consultantcy

Cryo pump service Repair 

Shaft straighten and balance

Rotor Stator test and repair.

Norm Radiation handling.

Fitting machine bushing wear rings

Cryogenic component testing


We offer consultancy for service repair and commisioning of cargo pumps and related equipment.  We will assist you in  process of managing your overhauls and scheduling repairs to meet your deadlines.  We can assist with recommended spare parts procurement  and assist with sourcing parts for issues that arise during dockings and maintenance.
We offer support for FSO FPSO conversiions and emergency repairs.
Consultancy subsciptions for customer support available.




We are able to undertake low volume machining of medium to large components. Horizonal boring,turning.milling and surface finishing.


  • Overhead crane for equipemt up to 10T and pumps 5M in length.

  • Complete machine shop facilities,

  • Dynamic balancing,

  • 1400Ltr LN2 storage for shrink fitting and stress relieving parts

  • Safe working pit for assembly area

  • Electrical motor testing 

  • Licenced by E.A to handle NORM contaminated equipment

  • Consultantcy and commisioning 

We are able to undertake work on many pumps on site or at our facility




All components of an assembly that are required to rotate should be balanced, examples of such components are fans, rotors, impellers and shafts. Imbalance in a part causes unwanted vibration which in turn can cause many other problems such as increased wear to components, loud noise, decreased performance of components and catastrophic failure.

Dynamic balancing is a method of measuring the imbalance in a component using electronic equipment whilst the part is rotated at high speeds, once imbalance is measured it can be corrected by adding or removing material from a part in the appropriate location.  In some cases a part may become imbalanced due to bending and can be corrected using a procedure of straightening.

At our UK based facility in Dorset UK we can provide balancing services for shafts motors up to 3 tons. We use an overhead crane capable of carrying up to 10 tons.




Shrink fitting is a method of fitting components that use an interference fit, it does this using thermal contraction i.e. a component such as a bushing can be cooled using liquid nitrogen (LN2) which causes it to become smaller and easily fit into it’s register until it returns to ambient temperature and it’s original size. This method is better than fitting the components using force or heat because it won’t damage the surfaces of the components.


Servicing electric motor and pumps for the power and gas industry.


We have been serving the gas industry for over 40 years service repairs to submersible cryogenic pumos. We have experience with Shinko, Cryostar, Airco,J.C Carter and were authorised agent for Ebara Int in the uk for over 10 years. We have experience with ship-board and  shore based plant pumps up to 7.5 tons. We are licensed by the environments agency to be compliant with naturally occurring radiation, and can clean and decontaminate during disassembly. MAINTENANCE REPAIRS 



We have experiance with all makes of cryogenic pumps including Shinko, Nikiso, Cryorstar, Ebara, J.C carter  Until Feb 2024 PSL was authorised service centre for Ebara Pumps in the UK  and covering many parts of Europe and Asia.  Our clientèle  includes many major energy companies using cryogenic pumps as well as many large shipping and ship management organisations worldwide.

We work to OEM standards & procedures for service and repair of liquid gas pumps used for gas processing plants and shipping companies, this involves as below

  • Thorough inspection and examination of equipment/parts using state of art measuring instruments allowing us to check critical dimensions and tolerances to high accuracy & specifications.

  • Replacing worn and damaged parts in house or with site supply.

  • Refurbishing and modifying damaged equipment using specialist machining in our modern facility.

  • Straightening and resurfacing pump shafts within the necessary tolerances.

  • Dynamic balancing of shafts and impellers individually and as an assembly.

  • Shrink fitting and machining of wearing surfaces

  • Electrical motor test & inspection. 




SINCE 1979

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