Tek-DP 1630A Flow Nozzle are commonly used devices, called primary elements, used in differential-pressure flow meters to generate a pressure drop in the flow meter to measure the volumetric flow rate of any fluid or gas flowing through a pipeline. These devices are characterized by their simple design, easy installation, highly accurate, reliable measurements. They are ideal for measuring high-pressure, high-temperature, high-velocity fluids, gases. The flow nozzles are more expensive than orifice due to their structure, however, they are suitable for determining the flow rate of fluids at high temperature and high pressure. Tek-DP 1630A is also suitable for high speed flowing fluid.