Category: Process Plants Instrumentation
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Steam Conditioning Valves – Features, Advantages & Applications
The Work of Steam Conditioning Valves & Why they are used in Industrial Processes Typically in an industrial set up, it may be necessary downstream of the main process application of superheated steam to reduce its pressure and temperatures to … Read more
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Steam Traps – Basic Features, Types & Applications
A steam trap is a control valve whose basic function is to allow condensate to flow, while preventing the passage of steam until it has given up its heat by condensing back to water; in other words, a steam trap … Read more
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Testing, Pre-commissioning & Plant Commissioning Requirements
Introduction A new installation must be fully tested to ensure that the equipment is in full working order prior to its being started. This testing is typically divided into three phases: Pre-installation testing. Piping and cable testing. Loop testing or … Read more
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What is the Function of a Steam Desuperheater?
Whereas superheated steam offers an excellent source of energy for mechanical power generation, in most cases, steam at greatly reduced temperatures, near saturation, proves a more desirable commodity especially for most heat-transfer applications. Precise temperature control is required to enhance … Read more
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Control Valve Selection Guide
Valves are manual or automatic fluid controlling elements in a piping system; in other words, valves isolate, switch, and control fluid flow in piping systems. They are constructed to withstand specific range of temperature, pressure, corrosion, and mechanical stress. Valves … Read more
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Volume Booster: Function, Operation & Application
Function of a Volume Booster A volume booster is a device that amplifies or boosts the volume of air supplied to the actuator, that is, it takes an input signal and produces an output of a large volume flow of … Read more
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Electro-Pneumatic Valve Positioners: Function & Features
Valve positioners are motion-control devices that are made in such a way to actively compare valve stem position against the control signal, adjusting the actuator diaphragm or piston till the correct stem position is achieved, that is, in a nutshell … Read more
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Instrument Grounding: General Guidelines
Specific attention must be paid to instrument grounding, especially where field instruments are connected to a computer or microprocessor based control system. Where cable screens are used, ground continuity of screens must be maintained throughout the installation with the … Read more
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Selecting a Pressure Reducing Regulator: Key Parameters to Consider
A pressure reducing regulator is used in many industrial applications. In this article, we look at key parameters that must be established to help you make the appropriate selection of a pressure reducing regulator for your application. Fig: Spring-controlled Pressure … Read more
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Valve Positioners: Function & Types
Basic Features of a Positioner Pneumatically operated valves depend on a positioner to take an input signal from the process controller and convert it to valve travel. In other words, a positioner is a motion control device made to actively … Read more