Inherent control valve flow characteristics are established assuming a constant Δp across the valve. If the valve Δp is reduced as the flow increases, meaning that there is a valve pressure drop decay ...

Common noncompensated valves are adjustable needle valves; flow through them varies with fluid viscosity and pressure across the valve. Usually, a needle valve is paired with a check valve that ...

To define control valve inherent flow characterization and inherent rangeability, and to recommend allowable deviations from characterizations curves which are described mathematically or graphically.

Feedwater control valves play a critical role in boiler operation. One important parameter of their design is the pressure drop at the rated condition as well as off-design conditions. However ...

The Kettle Creek Flow Control Valve Design-Build project was developed to replace a single 30-in. plug valve and create a redundant flow train between two major potable water pipelines.

Oxford, UK: Oxford Flow, the flow control equipment specialist, has initiated commercial trials of its ES stemless control valve with ADNOC. The pilot is a result of Oxford Flow’s success as a ...

Oil field operators can use several practical equations for calculating flow rates of natural gas through venturi gas-lift valves.