Definitions for

**"Total Pressure"**The algebraic sum of static and velocity pressures.

In this document this term equals the sum of the pressure in ullage space and the pressure due to product head.

(or stagnation pressure) Pressure value that can be determined by actual (or imaginary) stagnation the given flow in a stationary way when each decelerated particle of the fluid undergoes isoentropic adiabatic process. Sum of static and dynamic pressures.