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 Wed, 11/20/2019
Laying out an effective heat tracing design requires careful attention to detail. Every aspect of the system must be meticulously considered, including both the temperature requirements of the fluids being protected as well as the physical characteristics of the equipment being heat traced.
on Mon, 06/03/2019
For many years, the industry has been guided to a liquid filter cartridge with an outside diameter (OD) measuring 2.5” or so with an inside diameter (ID) measuring 1”, and a length that varied from 5” to 40”. Of course, there are always a few exceptions to the length, but in general, these specifications were very much the standard.
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 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 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 Wed, 03/28/2018
In the chemical processing industry, a significant percentage of measurement devices are not correctly matched to their application. This leads to decreased quality and consistency in their operation.
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 Mon, 06/05/2017
Inside of plants today, AC motors are becoming the industry standard. Many plants are shifting to AC motors from hydraulic motors and in some cases DC motors when powering heavy loads, which were more popular in the past. This shift can be attributed to a variety of reasons and most have to do with cost.
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.
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.
Workplace safety is—or should be—a primary focus of every organization, regardless of whether we’re talking about a classroom, an office, a manufacturing facility, or an oil rig. Employees deserve a workspace that is as safe and secure as it can possibly be.
Sysmac is the latest machine automation platform from Omron with integration throughout: from controller to software.
on Wed, 06/17/2015
Plant engineers often fail to incorporate correct lubrication into system processes and do not realize its critical importance until something goes wrong.
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 Tue, 06/09/2015
Cavitation is the 2nd leading cause of a pump system failure. It’s for this reason that a full understanding of what cavitation is, how it is caused and how it can be prevented is critical in the fluid power industry.
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, 04/14/2015
Tasked with increased demand for high power output, many operators in North American sectors such as power generation, oil and gas, petrochemical and chemical have been challenged by low-voltage solutions and their associated logistical challenges.
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 Tue, 02/03/2015
Considering the number of variables present, gaining precise control of a process heating application can be a difficult task. In industries with a low tolerance for irregularities and a high demand for consistent quality, controlling the temperature of a substance from the start to the finish of a process is an absolute necessity.
on Mon, 12/15/2014
An HMI that is expressive, intuitive, and easy to implement makes industrial machines more attractive and competitive. The Omron Sysmac NA Series HMI enables faster, more efficient control and monitoring - and a more natural relationship between operator and machine.
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 Tue, 08/27/2013
A temperature sensor is a key component of any process heating application as it provides temperature feedback about the process, which can be used to monitor or control the process
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
Advanced Process Control (APC) methods used to be so advanced as to be esoteric- too complex and unusable except by a few high-level experts. Today, however, it seems APC is little talked about for an entirely different reason: It’s become a commodity.
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.
Valin provides outstanding solutions and are very responsive to our needs.