Flow Nozzles - Imperial flow nozzles are calculated, designed and manufactured to ASME recommendations to provide high accuracy flow measurement.

The flow nozzle offers some distinct advantages over the thin plate orifice in that it produces less differential pressure for a given beta ratio resulting in an overall lower permanent pressure loss. Conversely, the flow nozzle will allow maximum flows nearly twice as great as a thin plate orifice with the same differential pressure.

Accuracy is also sustained indefinitely since there are no sharp edges or protrusions to wear.

The completeness of published research data permits Imperial to provide the ASME type nozzle with an accuracy of 1 percent without the reed of flow calibration. Flow calibration is available to provide nozzles with .25 percent accuracy when necessary.

Optimized design - Optimimum design is provided on each Imperial flow mozzle since it is manufactured for a specific beta ratio or throat diameter neceddary to produce the desired differential pressure consistant with minimum pressure loss, piping requirements and accruacy of measurement.

Materials of construction - Imperial flow nnozzles are built of various carbon and stainless steels.