Orifice plate is an economical and accurate instrument, which suits well for all flowing media at a low rate of flow. Depending on the structure, this device can be used either in high or low pressure applications.
Orifice plate has the biggest pressure loss of all flow restrictions and therefore it can not be recommended in applications where a maximum efficiency is needed. Orifice plate has a tendency of causing noise at higher fluid velocity.
Installing orifice plates in to the pipeline before blowout is not permitted.