In general, screen openings should be approximately one-half the diameter of the largest allowable particle. The largest allowable particle is defi ned as the size of particle that can pass through downstream equipment without causing damage.
For example, if the maximum allowable particle is 1/16 inch than the screen opening would be specifi ed at 1/32 inch. In addition to the size of particles, the quantity of debris in the flowing media must also be considered when determining the appropriate opening size.
Straining elements can only be used to remove insoluble fl oating impurities. The most common range of particle retention is 1 inch down to 40 microns (.0015 inch).
