FILTERS & STRAINERS PDF Print E-mail
Written by Norrie   
Tuesday, 11 May 2010 19:22
Article Index
FILTERS & STRAINERS
FILTERS
STRAINERS
STEAM TRAPS
MECHANICAL STEAM TRAP
THERMOSTATIC STEAM TRAP
THERMO-DYNAMIC STEAM TRAP
EJECTOR SYSTEMS - INTRODUCTION
EJECTORS AND EDUCTORS
All Pages

 

INTRODUCTION

During the flow of fluids through process pipelines and equipment, solid particles of dirt, rust, scale.. etc, may be picked up by the fluids. These solids can cause damage to equipment by erosion and blockage. In order to minimize this problem, Filters or Strainers are installed in piping, upstream of equipment in which solid particles are undesirable.



As an example, strainers are installed upstream of some steam-traps which, if solid particles were to enter the trap, its operation would be affected adversely.

Filters are constructed according to the duty they are to perform - a good example is the air filter in the intake to a car engine. It is made of very fine material in order to remove very tiny particles of dust which would cause problems in the carburettor where the air is mixed with the fuel. The fuel is also filtered before mixing.

To protect the engine bearings, shafts, gears and pistons …etc, the car lube oil is also filtered. In all cases where filters or strainers are used, they must be cleaned or the dirty elements changed for clean ones as soon as the filtration process becomes poor and fluid flow decreases.