Diaphragm Compressors for leak-tight and contamination-free compression of
all types of gases including Argon, Fluorine, Silane, Nitrogen, Nitrogen
Trifluoride, Oxygen, Hydrogen, Helium, Ethylene, Sour gas, TFE, Xenon, Neon and many
other gases.
Diaphragm Compressors for Gas Processing Applications
PDC Machines has been manufacturing diaphragm compressors since 1977. With decades of
experience in diaphragm compressor technology, we have partnered with companies and
government agencies worldwide to provide them with the optimum solution to satisfy
their gas compression needs. PDC has developed an extensive line of basic diaphragm
compressors and fully automated turnkey diaphragm compressor systems with installations
located around the globe.
We have been privileged to work with many gas producers, chemical and petrochemical companies
around the world. Our clients include 3M, Air Liquide, Airgas, Air Products and Chemicals,
British Oxygen Co/Linde, Bristol Myers Squibb, China Petroleum Corp. ChevronTexaco, Conoco
Phillips, E. I. Dupont, Emirates Industrial Gases Co., ExxonMobil, Fiba Technologies, Foster
Wheeler, General Electric Co; Harris Industrial Gases, Imperial Oil, Korea Specialty Gases,
Kyodo Oxygen, Lockheed Martin, Mead Johnson, Nippon Sanso, Petrobras, Petronas, Phillips
Petroleum, Polish Oil & Gas Company, Praxair, Saudi Arabian Basic Industries, Saudi Electricity
Company, Shell Chemical Company, Stone and Webster, Teledyne Energy Systems, TRW Systems, and many, many more.
Compressors of this type are used in applications ranging from vacuum to pressures up to 60,000 psig
(4,100 bar). Because of the large surface areas and masses and the use of water-cooled heads, our metallic
diaphragm compressors achieve higher compression ratios than conventional units. In specific cases,
compression ratios as high as one hundred to one are possible.
Because PDC's diaphragm compressors utilize static seals, our crankcases do not need to be purged or
vented. Due to this there is no leakage to the atmosphere.
Our design permits startup under high inlet pressure without unloading the system as required by other
compressor systems. Complicated and expensive transition assemblies used by conventional diaphragm
compressors are eliminated. Resulting in lower purchase, operating and maintenance cost.
These compressors are used for contamination-free compression of gases. The process media does not
contact the piston, piston rings, etc. that are typically used to generate displacement in conventional
compressors. PDC accomplishes this by isolating the process media from the piston and related
components with a set of metallic diaphragms. The piston moves a column of hydraulic fluid which
in turn moves the diaphragm set and displaces the process media. The process side of these units
is constructed of compatible corrosion-resistant material (stainless steel, Inconel®, Hastelloy®,
Monel®, etc.) to prevent contamination.