Reliable Pumps and Compressors for Midstream Gas Processing


Safe, reliable, compact, efficient and compliant natural gas production





Sundyne is the global leader in engineering and manufacturing low flow, high head pumps and compressors for midstream gas production specializing in amine treating, mole sieve dehydration, cryogenic processing and hot oils. 



Sundyne: Rugged Reliability For The Midstream Market

Natural gas resources are abundant, providing clean and plentiful fuel supply that will power the world through the 21st century. A robust technical infrastructure is being implemented by global gas producers to leverage these resources. 

Midstream companies operate oil and gas pipelines and gathering or transmission facilities responsible for moving natural gas from the wellhead to downstream consumers. Common midstream processors include fractionation plants that treat the raw gas product, remove water and contaminants, and separate natural gas liquids (NGLs) for use as blend components in refineries or as petrochemical feedstock. Once purified, the remaining methane gas is compressed and distributed to downstream consumers. 

Sundyne manufactures pumps and compressors that are widely utilized in natural gas processing facilities. Sundyne technology is proven for midstream applications including amine treating, mole sieve dehydration, cryogenic processing and hot oils. Sundyne pumps and compressors are extremely reliable resulting in reduced plant downtime, efficient energy use and maximum throughput.





"If that compressor goes down, the plant goes down. That's why we commissioned a Sundyne."

Midstream Natural Gas Processing Plant Process Engineer






Amine gas treating refers to a process that utilize solutions of various alkylamines (amines) to remove hydrogen sulfide and carbon dioxide from natural gas. Midstream plants generally treat raw natural gas transported from the wellhead to produce sweet gas for further processing.



    Sealless Magnetic Drive API-685 Centrifugal Pumps
    Sunfo High-Pressure Medium-Duty Centrifugal Pumps


Sundyne manufactures pumps that fit perfectly in the reflux and lean amine processes...Contact your local Sundyne Channel Partner to Learn More.








Mole sieve dehydration units remove water vapor from natural gas as it enters the midstream process after amine treating. A mole sieve process utilizes molecular materials to sift or separate the gas from water. Dehydration separates' the water from natural gas for cryogenic processing. Inlet gas must be free of water vapor so that it will not freeze in the process.


The basic mole sieve design consists of two or more units. One unit operates in dehydration mode with the other in regeneration mode. As the dehydration unit becomes saturated with water vapor, it is automatically switched to regeneration mode while the regeneration unit becomes active in dehydration mode.


Sundyne integrally geared centrifugal compressors are precision engineered to provide pulsation and vibration free operation. Built to meet API standards, they will run continuously for up to 5 years, delivering oil-free process gas with no emissions. Their compact footprint and high efficiency make them perfect for handling mole sieve regeneration and dehydration (refer to the diagram below).



    Integrally Geared Centrifugal Compressors


Sundyne integrally geared centrifugal compressors are widely utilized for regeneration in the mole sieve dehydration process...Contact your local Sundyne Channel Partner to learn more.






A cryogenic processing plant, also referred to as a striping plant, is a facility where natural gas flowing from wells is cooled to sub-zero temperatures (-120 degrees Fahrenheit, -84 degrees Celsius) in order to condense liquids that naturally occur within the natural gas. These liquids are referred to as NGL's or Natural Gas Liquids.


NGL's generally include butane, ethane and propane. After separation, NGL's are shipped to market and often used in refineries and petrochemical plants for fuel or feedstock. The methane gas that remains after removing the NGL's is transported via pipeline to be sold and distributed to businesses and households.  



Sundyne integrally geared centrifugal compressors are widely utilized for regeneration of the demethanizer process. They run continuously for 5 years delivering oil free process gas with no emissions. Sundyne compressors are ideal for skid packaging due to their unique modular base plant and are easy to install into your process environment.




Sundyne OH2, OH3 and OH5 process pumps are widely utilized for reliable, safe and efficient transportation of NGL's once they have been separated from the natural gas. Sundyne pumps provide multi-stage performance in a single stage design. They are engineered to meet API 610 / ISO 13709 standards and deliver rugged reliability in a compact footprint. You can count on Sundyne pumps for maximized up time, reduced maintenance costs and optimized productivity in your midstream plant.  



    OH2 Process Pumps
    Integrally Geared Centrifugal Compressors


OH3 and OH5 Process Pumps

OH3 and OH5 Extremely Low NPSHr Process Pumps


Sundyne OH3 and OH5 processes pumps with low NPSHr and integrally geared compressors perfectly suited for transporting NGL's and Demethanizer processes...Contact your Sundyne Channel Partner today for more information.





Hot oil systems are designed to store and move heat transfer fluids used for midstream gas process heating. The heat transfer fluid is normally stored in an elevated insulated vessel. Sundyne HMD/Kontro sealless magnetic drive centrifugal pumps are utilized to circulate the heated fluid from the storage tank through an electric process heater, gas fired heater or exhaust heat exchanger. The heat transfer fluid’s elevated temperature is then used to safely heat a process system and is then returned to the storage vessel.




    Sealless Magnetic Drive API-685 Centrifugal Pumps


Sundyne HMD/Kontro sealless magnetic drive centrifugal pumps have a large temperature range and do not leak. They are perfect for handling heat transfer fluids...Contact your Sundyne Channel Partner today for more information.


  Sundyne is more than a manufacturer of high quality pumps and compressors. We offer some of the fastest delivery times in the industry, and we back each and every product with full service and support to extend the value of our products beyond the point of sale. The Sundyne service team is here to help you protect your investment and provide a trouble-free customer experience with local Authorized Service Centers and factory service.


Midrange Natural Gas