Valves are expensive items, and it is important that a correct valve is specified for the function, and must be constructed of the correct material for the process liquid. Regardless of type, all valves have the following basic parts: the body, bonnet, trim (internal elements), actuator, and packing.
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CONTROL VALVE BASICS – SIZING & SELECTION Introduction A control valve is a power operated device capable of modulating flow at varying degrees between minimal flow and full capacity in response to a signal from the controlling system. Control valves may be broadly classified by their function as “on-off” type or “flow regulating” type.
This course offers a solid introduction to many basic concepts related to the valves used in general industry. So whether you're a complete novice, filling some gaps in your knowledge, or just brushing up, Valve Basics has the information you're looking for.
Valve modification can be defined as: adding value to standard or “commodity” valves by installing actuators, special trims, different end-connections, packing and gaskets, and other accessories or upgrades not provided on the original product.
This course offers a solid introduction to many basic concepts related to the valves used in general industry. So whether you’re a complete novice, filling some gaps in your knowledge, or just ...
Basics What is a valve ? A valve is a device with moving mechanism that passes, stops or controls the flow of a fluid. Such fluid control valves have been applied to various facilities including piping of a waterworks system, farm water supply, and sewage system.
Perhaps the simplest of all directional-control valves is the check valve, a specific type of binary valve. Basic check valves allow fluid to flow in one direction but prevent fluid from flowing in the opposite direction. As with all fluid power components, directional-control valves can be represented by standard symbols published in ISO 1219.
Introduction to Valves and Actuators. Introduction to Valves and Actuators. Skip navigation Sign in. ... Valves Basic Types and Operation 2 - Duration: 17:30. Russell Hills 202,074 views.