All these years, CALIBER Valves Pvt Ltd. has been designing, manufacturing and supplying a spectrum of valves for various large and small industries handling a variety of fluids.  Now it extends its product range to almost all types of strainers, which form part of the pipelines in the industries.

Strainers and filters are simple mechanical devices used for protecting the process media from unavoidable unwanted solids by selectively removing them from the line stream. Strainers play another very important role by protecting the pipeline components from getting clogged and become inoperative.

There are a variety of strainers used in the industry. One way of classifying them is by the nature of the duty involved.

Temporary strainers: As the name suggests, these strainers are used for short time in the pipeline especially during commissioning of the new pipelines, to get rid of any unwanted matters left in the pipelines during the fabrication of the lines.  Once the purpose is served, normally these strainers are removed from the lines.  Conical strainers, Tee type strainers fall under this category.

Strainers for regular services: Most of the industry requirements find themselves under this category. Here the strainers are on line. As and when the strainers get clogged up, the lines are stopped and the strainers are cleaned and put back into the service. This may be done periodically or as and when the clogging of the strainer affects the process flow conditions. Y type strainers, Pot type strainers and similar configured strainers fall under this category.

Strainers for critical services: These strainers are used for those pipelines which are continuously on and cannot and should not be stopped. In these critical conditions, special features are provided to clean the strainer element and removing the clogging without stopping the line flow and interrupting the process.

Two principles are used for achieving this:
Alternating the straining process with two independent strainers, with isolating mechanism to keep one strainer on line while the other one is serviced.
On line cleaning type strainers, where the collected debris are continuously removed from the line keeping the strainer screen free all the time, without interrupting the line flow. Various mechanisms are used for cleaning the strainer screens.

The Material of construction [MOC] varies with the operating medium, operating pressure and temperature etc.