Filters

Filter solutions for high-pressure pumps and ERDs

Filtration is a process of removing unwanted solids from fluids by passing the fluid through a form of sieving material that retains the solids, but allows the fluid to pass through. Filtration efficiency is, therefore, the percentage of solid retention by the sieve. It is this “sieve” that we refer to as the filter medium, or simply the filter. A contaminant is generally referred to as the material that is to be removed from the fluid, and the clean fluid is called the filtrate. In today’s market, manufacturers use three types of ratings to evaluate filters: nominal rating, absolute rating and beta ratio.