Our Applications
Click any of the links below to take a closer look at how from pipeline to engine, Finite filters provide the critical filtration required for most alternative fuel systems.
Filters for CNG Compression Systems
Filters for CNG Dispensing Applications
Filters for On-Vehicle Applications
Filters for Dual Fuel Applications
Filters for CNG Virtual Pipeline
Filtration Media for CNG
Through years of research and devlopment working with OEMs, we have become the CNG Filtration leader in the industry.
Our Finite Uni-Cast filter elements are unique in the industry. The Uni-Cast formed microglass elements provide depth style filtration that traps and removes the fine oil aerosols from the hot, high pressure CNG while providing high flow and low pressure drop.
The Uni-Cast coalescing elements come in Grades 10C, 8C, 6C, and 4C. The Grades 10C and 8C are used to remove the bulk contaminants, and the Grade 4C is used in the latter higher pressure stages. The Parker Finite Grade 4C media is designed especially for use with high pressure CNG. When it comes to capturing and draining compressor oil carryover nothing else works like the Parker Finite Grade 4C element. General wrapped and layered style media filters try to emulate the performance of the Finite elements, but users often end up with oil in their systems. The Parker Finite Uni-Cast Grade 4C is formulated to trap tiny aerosols and particulates from hot, high pressure, thinner-than-air, low specific gravity, CNG.
Finite Uni-Cast Elements
Finite Uni-Cast elements maintain coalescing efficiency over a very wide range of flow. The unique Uni-Cast design provides a deeper, progressively efficient filtration media bed that allows for high efficiency and low differenctial pressure throughout the fill cycle of alternative fuel vehicles. Wrapped or layered style elements will satisfy a normal range of compressed air flows, but the flow rate and pressure dynamics of a CNG fill cycle are much different. When the dynamics change within a matter of minutes, a wrapped element loses its filtration efficiency over the wide range of volumetric flow.
Good filtration prevents contamination and compressor oil from migrating downstream. The high pressures and flows in a CNG system are a challenging environment for filter elements. Parker Finite filters are designed to withstand high differential pressures without rupturing. The Parker Uni-Cast depth style elements for high pressure housings (>800 psi) have steel retainers to ensure high burst strength with no gaps in the media to allow break-through.
