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By
PETER S M I T H
(Editor and Contributor)
and
R. W. ZAPPE
The purpose of this book is to assist the Piping Specifying Engineer in
the selection of valves for a specific application and that meet the design
parameters of the process service. Valve selection is based on function,
material suitability, design pressure/temperature extremities, plant life, end
connections, operation, weight, availability, maintenance, and cost. I have
deliberately placed cost at the end for a reason. If the valve does not meet
the design criteria, then even if it is free, it is still too expensive, because of
the costs to replace it when it fails. Just like life, valve selection is a series
of compromises.
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