Strainers, abbreviated as STR or STRS, are closed vessels that collect solid particles to be separated while passing a fluid through a removable screen. The screens can collect particles down to 0.001 inch in diameter. They can remove more than unwanted material. They can also remove wanted materials that can be used elsewhere or in other processes. You can find strainers upstream of sensitive equipment such as meters, pumps, compressors, traps, valves and filters. Strainers and filters are basically the same thing. The difference is that a filter removes much smaller particles, particles you normally can’t see. If you can not see the material being removed, it is usually called a filter.
You can find strainers in almost every industry: chemical, food, water, petroleum, paint and ect. Strainers come in different configurations such as Y Strainers, Simplex Strainers, Duplex Strainers and Temporary Strainers. They can be bolted, threads or welded in line.
