Pilot pressure is the pressure that is used to control or operate another valve in a hydraulic system. Pilot valves are small valves that regulate…

A pressure valve switch is a device that controls the flow of fluid in a hydraulic system by opening or closing an electrical circuit at…

Pilot pressure control valves are a type of pressure relief valves that use a small valve, called a pilot valve, to control the opening and…

A pilot operated check valve is a type of check valve that allows free flow in one direction and blocks flow in the opposite direction…

Definition While many control valves throttle in mid-travel positions throughout their operating lives, some applications include a requirement for the control valve to stop, or…

Sliding-Stem – For sliding-stem valves, the ratio of the maximum to the minimum usable Cv is highly variable, but is generally between 20:1 and 100:1.…

Control valve rangeability is a specification that is closely associated with the concept of flow characterization. Unfortunately, the term rangeability is often misused. Definitions Classical…

While a thorough dynamic analysis of the system can be performed to guide the selection of a particular valve characteristic, the use of established rules…

Selecting A Characteristic – To provide linear system gain over the entire operating range of the system, an equal percentage valve characteristic is selected. This…

Typical Pump And Piping System – The objective of flow characterization is to select a valve gain curve that will match with, or compensate for,…