Diaphragm Gas Compressors

Diaphragm gas compressors

Diaphragm gas compressors

Common questions – information

Why diaphragm high pressure compressors

High compression ratio

Process gas 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.

Environmentally safe

Because PDC Machines’ 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.

High suction pressure

Our design permits startup under high inlet pressure without unloading the system as required by other gas compressor systems. Complicated and expensive transition assemblies used by conventional diaphragm compressors are eliminated. Resulting in lower purchase, operating and maintenance cost.

High product purity

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 Machines 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 gas. The process side of these units is constructed of compatible corrosion-resistant material (stainless steel, Inconel®, Hastelloy®, Monel®, etc.) to prevent contamination.

A comparison of compressors

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