In this way, the outlet pressure of the regulator is controlled.

The flow is usually expressed at outlet pressure.

The outlet pressure, which was controllable at the nozzle, determined how far the stream of nitrogen would go.

As is the case in all regulators, outlet pressure is lower than inlet pressure.

This equation can be seen as Poiseuille's law with an extra correction factor expressing the average pressure relative to the outlet pressure.

The adjustable second stage of the regulator controls the pressure reduction from the intermediate pressure to the low outlet pressure.

A diaphragm within the valve keeps the outlet pressure constant, and this delivers a constant flow to the terminal.

Diffusion pumps cannot discharge directly into the atmosphere, so a mechanical forepump is typically used to maintain an outlet pressure around 0.1 mbar.

A single-stage regulator will tend to reduce its outlet pressure as the cylinder is emptied, requiring manual readjustment.

In large, high-pressure modern boilers, usage of injectors for chemical dosing is not possible due to their limited outlet pressures.

For a given outlet pressure , flow rates changes depending on the inlet pressure as an arc of hyperbola in a plane parallel to .

The outlet pressure is a reflection of the pressure that applies the centripetal force that curves the path of the water to move circularly inside the pump.

Propane regulators differ in size and shape, delivery pressure and adjust-ability but are uniform in their purpose to deliver a constant outlet pressure for downstream requirements.

The compression ratio of the injector, , is defined as ratio of the injectors's outlet pressure to the inlet pressure of the suction fluid .

The effect of this is that a steam turbine with a lower outlet pressure can be used, with a lower enthalpy level at the outlet of the turbine.

For air flow at room temperature, when the outlet pressure is less than 1/2 the absolute inlet pressure, the flow becomes quite simple (although it reaches sonic velocity internally).

If the valve is opened the pressure has to decrease enormously before the valve closes and also the outlet pressure of the valve can easily keep the valve open.

Pumps are commonly rated by horsepower, flow rate, outlet pressure in metres (or feet) of head, inlet suction in suction feet (or metres) of head.

For off-design calculations, the off-design flow rate is , respectively the temperature and pressure at the stage group intake are and and the outlet pressure is .

For gases that are liquid under storage, e.g., propane, the outlet pressure is dependent on the vapor pressure of the gas, and does not fall until the cylinder is nearly exhausted.

The boiler was designed by Babcock & Wilcox and is a supercritical boiler with a maximum superheater outlet pressure of about 3800 psi and temperature of about 1050 degrees fahrenheit.

For very low outlet pressure , like for condensing turbines, flow rates do not change with the outlet pressure, but drops very quickly with the increase of the backpressure.

Accordingly, a bypass line goes around the pump and feeds the gas generator using the nitrogen tank pressure until the APU speed is such that the fuel pump outlet pressure exceeds that of the bypass line, at which point all the fuel is supplied to the fuel pump.