ITT Industries
<<This article discusses the use of multiple sanitary valve groups in specific orientations to meet the needs of process operations, cleaning, and sterilization.>>
Selecting a Ball ValveValveStore.com
<<When selecting a ball valve, it is important to consider safety, reliability, media compatibility, suitability for the environment and other application criteria. It is the installer’s and/or system designer’s responsibility to ensure that these valves are installed in accordance with current ANSI B31 standards.>>
Useful Valve-Related InformationValves International (Pty) Limited
<<Common abbreviations in the valve industry, valve material temperature limits, pressure-temperature ratings, material comparison for cast and forged steel products, buttwelding end details, material composition, pipe flange dimensions.>>
A Review of Butterfly Valve Components and OperationChemical Processing Magazine
<<Many different types of valves are used in flow control. They are used for a variety of reasons, such as phase (liquid or gases), pressure, piping restrictions and solids content. Other valves are chosen for their capability to open and close in a quarter turn. Of all the valve types, the butterfly valve is used as a control device for many reasons including some or all of the above.This article explains the workings of a butterfly valve and its operation. The butterfly valve offers many advantages that include quarter-turn, openness for less plugging and good control capabilities. Both manual and control versions are used.>>
Valve Standards in The Petrochemical and Refining IndustryUnited Valve
<<Valves in petrochemical and refining installations are subject to numerous standards and specifications issued by many supporting organizations. Today's valve standards are dynamic documents that reflect sound engineering practice, changes in market demands and changes in technology and manufacturing procedures. This document focuses on some of the important standards that affect steel, gate, globe and check valves in refineries and petrochemical installations. Some mention will also be made of other valve specifications, however specifications for control and relief valves will not be covered.>>
High-Performance Butterfly ValvesFlowBiz.com's Tech Central
<<Until the 1950s, the predominant valve types used in industrial service were long-stroke linear gate valves for on/off applications and globe valves for control. To counteract the problems inherent with linear valve designs, which included relative large size and weight, high operating force and tendency to leak, the rotary ball and butterfly valve designs were introduced. The 1960s marked the introduction of the high-performance butterfly valve.>>
Complete Guide to High Purity Ball ValvesFlowBiz.com's Tech Central
Understanding Non-lubricated Plug Valve (Sleeved and Lined)FlowBiz.com's Tech Central
<<In general, the advantages of rotary valves is that they are simple, lightweight, easy to automate, and easy to maintain; come in a variety of materials and end connections; come in a wide range of sizes; are available in multiport configurations; are quick opening; and can be adapted to a broad range of services. Plug, ball, and butterfly valves are the major types of rotary valves widely used in industrial plants for flow control in fluid-handling systems. Quarter-turn valves move from fully open to fully closed with a 90o rotation of the closure member and are unique in that the flow condition is indicated by the position of the control handle or actuator. Because plug, ball, and butterfly valves often have fluorocarbon seating materials and many are fully lined with fluorocarbon, they are excellent for corrosive applications requiring bubble-tight shutoff. They are used for a broad range of services in chemical, detergent, rubber, pharmaceutical, and pulp and paper plants; foundries; electrical component and water treatment and purification systems; breweries and distilleries; food processing plants; textile mills; and petro-chemical plants. The following deals with rotary valves used in on-off service.>>
Iron Butterfly Valves and Related KinFlowBiz.com's Tech Central
<<Butterfly valves are the most specified valve type for moderate-duty conditions in pipe sizes of two inches and larger. Their reduced weight, reliable bubble-tight shut-off, ease of operation and automation allowed them to displace gate valves in traditional applications. Bi-directional shut-off is one of the hallmarks of butterfly valves. Continuing development of the butterfly valve is making it possible to use them in aggressive applications that previously were the exclusive domain of gate and globe valves.>>
Valve Designs for Flammable FluidsFlowBiz.com's Tech Central
<<In many processes throughout the chemical processing and refining industries, valves and automated valves are required to handle flammable fluids. Valve manufacturers currently offer designs intended for this service called fire-safe valves. Selecting a valve that will provide shutoff in the event of a fire begins with an understanding of the term fire-safe and the standards established by users and independent testing companies. First to consider is that a valve intended for fail-safe service will probably not be required to perform in the event of a fire for many years-and hopefully never. The valve selected, therefore, should operate as a tight shutoff valve in normal operation before a fire and during and after a fire. A review of the construction features of the various types of fire-safe valves will help in their selection.>>
Valve Selection BasicsFlowBiz.com's Tech Central
Know the Basics in Valves<<Choosing the right valve technology takes knowledge of basic valve design and applications. This article will review ball, butterfly, diaphragm, solenoid, needle and check valves.>>
Cole-Parmer Instrument Co.
Dezurik ValvesComprehensive Site, Includes Drawings and Instruction Manuals
