on Wed, 04/01/2020
A lot must be reviewed prior to selecting the right fitting for power plant instrumentation applications. Among the choices are whether to use single- or double-ferrule designs; heat codes, lubrication, and corrosion resistance must also be considered.
on Wed, 12/18/2019
The devastating effects cavitation can have on control valve internals is widely appreciated. In this article, the authors therefore explain the origins of cavitation, provide an easyto-use method to estimate cavitation sound levels and conclude with approaches to reduce or even avoid cavitation.
on Mon, 11/18/2019
In the world of instrumentation, there are a number of different topics discussed and analyzed. However, one that should not be overlooked is that of instrumentation fittings. Do you know what technologies are available? Do you know the strengths and /weaknesses? Are there any new trends?
on Sun, 01/20/2019
Specifying control valves and engineering a system in which the flow of a particular product is completely optimized for superior performance and yield can be a challenging process. A number of factors must be considered during this practice, not the least of which is trying to prevent any system or process-destroying problems that may arise.
on Mon, 12/17/2018
Many engineers may wonder if it is possible to have flashing liquid flow in a control valve even if flow is not choked. The short answer is yes, but it is not very common. This article provides a more detailed answer to this question.
on Wed, 12/12/2018
Within a refinery, four main utilities are considered essential to operations: electricity, natural gas, water and compressed air.
on Fri, 09/28/2018
I was recently asked how the installed flow characteristic of an equal percentage valve in a system that includes a significant amount of pipe or other pressure-consuming elements “magically” becomes a linear, or approximately linear, installed flow characteristic.
on Fri, 08/17/2018
In the past, bulk storage systems have been used to house nitrogen on-site at the manufacturing plants, but this method of storage can result in a significant loss in revenue when all is said and done. So, what is the solution for plant owners? The answer begins with in-house nitrogen generation systems.
on Tue, 06/19/2018
The iPolymer PTFE Pressure Regulator is designed for use with high purity water systems and aggressive chemical applications to regulate and maintain a constant pressure downstream of the valve and prevent over-pressurization of sensitive equipment.
on Mon, 04/16/2018
Liquid choked flow in control valves results in either flashing, or more often, cavitation.
on Thu, 01/04/2018
Valve sizing and proper application of control valves have always gone hand-in-hand. However, the tools available to valve users have changed and improved significantly over time.
on Tue, 11/21/2017
Despite the demand for standardized communication protocols among manufacturers, both the manufacturers and end users face challenges when it comes to agreeing on a path.
on Mon, 04/03/2017
When selecting the pipes and valves to be included in a cooling system, it is important to understand the options available — and the possible outcomes associated with each selection. The selection process is often overlooked or is not given proper attention by designers and contractors. Many factors can impact the effectiveness, longevity and quality of the overall cooling system.
on Tue, 03/08/2016
Spectroscopy-based measurement on manufacturing lines yields greater process control
on Mon, 11/30/2015
Oil and gas engineers face a major problem in accurately and reliably measuring and monitoring the various fluids that are introduced into oil pipelines from well site pumping stations. A thorough understanding of both the oil separation process and the properties of valves and actuators is required to correctly specify a system.
United Electric Controls has introduced a unique new family of HART capable transmitters that provides programmable switching functionality for industrial process monitoring applications. The new One Series 1XTXSW transmitter line is the first to integrate HART 7 compatible 4-20 mA output and two solid-state programmable relays for monitoring temperature or pressure in safety, alarm and emergency shutdown applications.
on Tue, 07/14/2015
Precise combinations of valves and other equipment lead to process success. A biopolymer fermentation process provides an example of proper valve selection.
on Wed, 06/17/2015
This is Part IV in a four-part series based on the contents of the new textbook, “Control Valve Application Technology, Techniques and Considerations for Properly Selecting the Right Control Valve.”
on Thu, 05/21/2015
In order to get good control with stability throughout the full range of required flow rates, one must use a control valve that has an installed flow characteristic that is linear, or at least as close to linear as possible in most systems.
on Tue, 05/05/2015
In a world where most information is available in an instant, plant managers and engineers are continuously trying to find ways to improve the efficiency of processes along the manufacturing line.
on Wed, 04/01/2015
When addressing the needs of measurement operations involving various densities and amounts of liquid, Coriolis mass flowmeters are often chosen for their accuracy, durability and reduced maintenance costs. Applications involving custody transfer benefit from their simple and dependable characteristics.
on Fri, 03/27/2015
Purchase Valin’s Control Valve Application Technology book today to learn how to apply the right techniques to selecting the correct control valves.
on Thu, 03/05/2015
This is Part II in a four-part series based on the contents of the new textbook, “Control Valve Application Technology, Techniques and Considerations for Properly Selecting the Right Control Valve.”
on Tue, 02/24/2015
This article discusses the importance of selecting the correct flow characteristic and correctly sizing the valve in order for the valve to properly control the process.
on Wed, 01/14/2015
It’s important to understand the importance of proper control valve sizing. If the valve is too small, it won’t be able to pass the required flow. In actual practice, undersized valves are fairly uncommon, but oversized valves are all too common.
on Wed, 12/17/2014
The Reveal™ optical spectroscopy-based measurement system will help customers increase quality, yield, and productivity while reducing both risk and downtime in the manufacturing environment. Its measurement capabilities are unmatched by legacy techniques.
on Thu, 12/11/2014
Loss of containment is one of the costliest things that can go wrong at a plant. Accordingly, smart enterprises employ a variety of measures that ensure loss of containment just doesn’t happen – or when it does, the adverse circumstances are kept to a minimum.
on Thu, 12/11/2014
The noise abatement laws and health and safety legislation are becoming increasingly strict. Metso introduces Q2- Trim, the optimum solution for noise problems, that at the same time fulfills all legislative requirements and customer needs.
on Tue, 12/09/2014
Emergency order required all rail shippers to test products from the Bakken to ensure proper classifications of the oil within federal regulations before it's transported. The intent was to ensure shippers properly classified crude oil for transportation and to quantify the range of physical and chemical properties.
on Tue, 11/18/2014
The accurate allocation measurement of oil, water and gas is a constant priority for managers of surface operations, particularly with the recent oil boom in parts of the U.S. These measurements are the basis of the financial transaction between oil companies and royalty owners.
on Fri, 10/03/2014
Jon Monsen's book, Control Valve Application Technology, Techniques and considerations for properly selecting the right control valve, outlines the process of selecting control valves for a number of different applications.
on Mon, 08/25/2014
The recent oil boom in the United States, driven by rapidly advancing extraction technologies, presents new and critical challenges to operators in the measurement of oil, water and gas produced in surface operations.
on Sat, 02/08/2014
Valin is in the final stages of successfully commissioning 65 Lease Automatic Custody Transfer systems (LACT) for a very large project with one of the largest independent midstream energy companies in North America. The LACT systems were needed for an oil gathering project in the Myrmidon field in the Bakken Shale play in North Dakota.
on Mon, 06/17/2013
Just as sound can have negative effects on the human body, certain frequencies can play havoc on industrial equipment. When control valves are not selected appropriately, there is an increased risk for cavitation, which causes high noise and vibration levels, resulting in very rapid damage to the valve's internals and/or the downstream piping.
on Mon, 01/21/2013
In a recent interview with VALVE Magazine, Dr. Monsen discussed how the analysis of installed gain can be a guideline for selecting the control valve that will provide good control with stability throughout the full range of required flow rates
on Thu, 08/16/2012
When control valve professionals talk about "control valve sizing," they really mean the entire process of selecting the valve that will do the best job of controlling the process. Selecting the right size valve is an important part of the process, but there are other equally important considerations as well.
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