Contamination is a major cause of equipment failure, as well as, compromising the performance of an oil. Filtering the oil prior to use and while in use is essential for increasing equipment reliability. Materials that may be used to filter oil are paper, wood pulp, waste, felt and special clays. In most types of filters, the dirty oil is pumped in under pressure and emerges as cleaned oil, leaving the dirt in the filter. There are several types of filters that are used to filter out particles and water. Among these are cartridge filters, cloth, paper and metal, and coalescing filters. Some types of adsorbent filters include activated carbon, Zeolite, Fuller’s Earth and activated alumina.
When beginning the selection process of a filter, use the absolute rating to determine the effectiveness of a filter. The oil passes through the sized opening of the media. In a nominal filter, there is no guarantee that all the pores are the rated size. The term ‘Nominal’ is an arbitrary micrometer
In July, Gallagher released its Expansion Joint Design Guide, now available for download on our site. This design guide takes an in-depth look at elastomeric, metal, and flue duct expansion joints. The excerpt below is a section of our Expansion Joint Design Guide focusing on types of flue duct expansion joints. To download the entire guide, visit our Resources Page, or click on the image to the right.
Used to manage air and gas handling systems, flue duct expansion joints are most widely utilized in the Power Generation, Industrial & Institutional industries: