Strainers are placed in-line with process piping to remove large solid contaminants from the flow. Strainers can be cleaned and reused. Conical strainers represent a substantial performance improvement over flat style strainers. There is more open area so conical strainers clog more slowly and offer lower pressure drop losses than flat strainers. Conical strainers are effective for startup applications, as well as most service requiring infrequent cleanout. Conical line strainers are used to protect fluid and gas handling equipments by removing debris during the start-up of a system. They are easily installed between large flange faces without modifying the surrounding pipe work and they are easily removed.