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portada Valve Selection and Specification Guide
Type
Physical Book
Author
Publisher
Language
English
Pages
490
Format
Paperback
Dimensions
22.9x15.2x2.6 cm
Weight
0.68 kg.
ISBN13
9781468466706
Categories

Valve Selection and Specification Guide

R. Merrick (Author) · Springer · Paperback

Valve Selection and Specification Guide - Merrick, R.

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Synopsis "Valve Selection and Specification Guide"

Today, people who specify or select valves spend over two-thirds of their time researching literature for information on valve sizing, availability, materials, and standards. This is nonproductive time. Unfortunately, most companies do not have the luxury of a team of experts with the necessary experience and education in all of the different fields that apply to valves. The next best alternative is to understand what valves are and all the things they can do. By definition, valves are devices that stop, start, mix, or change the direction and/or magnitude of the fluid flow, pressure, or its tempera- ture. As a specifier or selector you will have to determine whether the valve is going to be used for flow control, throttling, or for on-off service. Then you will have to determine the cycle life or frequency of their operation. You will discover that valves are classified into three categories: on-off valves, control or regulator valves, and fixed valves such as orifice plate, nozzle, duckbill, rupture disk, blind valve, etc. These valves represent approximately thirty different design configurations. It has been said that if cost and delivery were no problem, anyone of the seven basic valve styles could do the job of any other one. But cost and delivery are very important factors in the real world. So you have to be able to distinguish among these seven styles: ball, butterfly, gate, globe, pinch/ diaphragm, plug, and poppet valves.

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