This white paper discusses the rising stem valve and compares it to the rotary valve. The reader will learn what to consider to ensure the lowest overall life cycle cost and best possible degree of process control.
In Jon Monsen's book, Control Valve Application Technology (published and distributed by Valin Corporation), Jon explains how to properly size and select a control valve. Jon recently received inquiries from customers interested in a further explanation of one of the graphs featured in his book. This article will cover that explanation.
In this paper I will show how an analysis using Metso’s Nelprof® control valve sizing and selection software’s unique ability to graph the installed gain of a control valve can be helpful in selecting the optimum pump for a balance of good controllability and minimum energy use.
Clean drinking water is the most precious resource on the planet. Access to sanitary water is an essential element to a healthy, productive population. While many consumers take it for granted that they have access to clean water coming from the faucets in their home and in public places, the companies responsible for making sure this is a reality understand everything that is involved.
Grocery stores require produce to be disinfected before being shipped to their outlet on a regular basis in order to ensure cleanliness before it is sold to their customers. If left untreated, fresh fruit can be subject to a number of different contaminates that can ultimately adversely affect the consumer’s health. As the public is more conscious than ever about the substances and chemicals that they ingest, ensuring that produce does not harbor microbes is critical.
Conserving electricity and water are as important as ever for companies in order to reduce operating costs. One area where the experts at Valin can help with this goal is through the use of a conductivity controller for the water treatment program of a cooling tower.
Selecting the correct chemical metering pump can be a daunting task because of the variations and types of chemical pumps available. In order to pick the best metering pump for the application you will need to consider several factors. For the sake of simplicity, we will limit our discussion to pumps that deliver no more than 50 gph and pressures of less than 250 psi.
There are very few elegant solutions for mid-to-large scale heavy industrial applications that require compact, high-temperature heating sources capable of delivering precise heat energy to a targeted location.
For US industries, the startling reality is that baby boomers are retiring at a rate of 10,000 people a day—it’s an exodus of not only skilled employees, but also “tribal knowledge,” learned on the job within industries or work plants and rarely captured in any manual or textbook.
Operational efficiency is a critical factor in the fluid processing industry. The synergy of fitting components and assembly technology to achieve this objective is the focus of Fit-LINE, Inc. Applying extensive polymer technology and injection molding expertise, the company has analyzed the design, tooling and manufacturing processes required to create high-performance solutions for demanding high-purity fluid processing applications. Through extensive R&D, testing and evaluation, Fit-LINE has isolated three variables that need to be addressed to ensure leak-free fitting assemblies.
The purpose of a filter is to remove contaminants from a fluid stream either completely, or at least down to a given rating or specification. Filters are used to help control contaminants and are rated according to their ability to remove these contaminants from a liquid, gas or air stream. There are different methods in which the performance of filters are specified.
Answer a number of key questions to identify the most appropriate choice
At process plants, a significant percentage of measurement devices aren’t correctly matched to their application, leading to decreased quality and consistency of the operation. Often, the source of this problem is the assumption that one type of level measurement sensor suits multiple applications.
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