Ebara International Coporation

The Cryodynamics Division of EBARA International Corporation was founded in California (USA) in 1973, to execute the founder's concepts of submerged electric motor cryogenic pump design. The Cryodynamics group was at one time associated with Royal Industries, and later became a division of Worthington Pump Corporation in the USA. In 1984, Cryodynamics entered into a partnership with EBARA Corporation of Japan, one of the world's largest pump companies with over 5,000 employees. In 1989, this association culminated with our becoming the Cryodynamics Division of EBARA International Corporation. Through affiliation with EBARA, company combined the established capabilities of Cryodynamics liquefied gas pump engineering know-how with Ebara's centrifugal pump know-how dating back to 1912. This combination provides a depth of capability and experience unmatched by any manufacturer of pumps for cryogenic liquids. Consequently, Cryodynamics is recognized as the unquestionable leader in this field. In 1994, the Ebara Cryodynamics group had outgrown their manufacturing plant in Sacramento, California, and moved their entire facility and operations to Sparks, Nevada (adjacent to Reno in Northern Nevada near the California border). The new factory and main offices are housed in a modern 5000m2 indoor plant on a 24,000 m2 site. At that time, the Ebara Cryodynamics liquefied gas test facility was rebuilt, and is now one of the largest and most sophisticated liquefied gas pump and turbine test facilities in the world.

Major Products

Suction Vessel Mounted - ECC Type
The entire pump and motor assembly are contained within a suction vessel built to the appropriate pressure vessel code for each application, making the installation safe, simple and reliable. The suction vessel functions as the outer pump casing. It is fabricated with a suction nozzle, welded couplings (for drain and liquid level indication), support brackets, a head plate with discharge nozzle, a conduit for electrical cables and a vent nozzle. The result is a compact, lightweight, uncomplicated installation having low noise levels and significant safety advantages over conventional pumps.


In-Tank (Retractable) ECR Type

This unique design allows the pump to be installed inside a storage tank in a vertical pump column, with a suction (foot) valve located at the bottom. Because the pump is installed through the top of the tank, all connections below the maximum liquid level of the tank can be eliminated. This eliminates the possibility of major tank leakage due to a pipe or connection problem. It also permits the storage vessel to be located below ground level or completely covered by mounding. The applicable codes allow the owner to minimize the land area needed to locate a liquefied gas storage tank due to the reduction of spillage potential.

Marine Cargo EC Type

These pumps are of similar construction to the ECC type and are usually located within the refrigerated cargo tank of a marine gas carrier to transfer such fluids as LNG, LPG, Ethylene, etc. These units are available for all applications of liquefied gas carriers and are used for main cargo unloading, stripping, spray and emergency (retractable) service. The units are fixed to the bottom of the tanks using a mounting arrangement designed to minimize stresses, and are connected directly to the discharge piping, which then travels out through the tops of the tanks.

Aggressive Fluid (Magnetic Coupling)
This unique design is used in liquids in which the motor cannot be submerged directly, such as ammonia. The motor is encased in a sealed housing that has nitrogen gas flowing into it from the top of the tank or suction vessel to keep the motor dry and inert, thereby providing a very safe environment.


Turbine Expanders
The Cryodynamics Division of Ebara International Corporation is proud to introduce our line of single phase and two phase submerged generator turbine expanders. Cryodynamics has developed the world's first site-proven variable speed, liquefied gas turbine expander and most recently, the first variable speed two phase Exducer expander.


Two Phase (Liquid and Gas) VX Type

Cryodynamics has recently developed a two phase, "Exducer" expander turbine, which is designed to operate in expansion conditions where the liquid will begin partially vaporizing within the turbine. This new design incorporates the same basic technology as our single phase, liquid expander, with the generator submerged, and incorporating our TEM, but at the discharge end, a jet Exducer is attached to the shaft.