by an external disk or bar. The pinch
valve has no dedicated seat, and the
design is highly tolerant of solids in the
flow stream.
Ball, gate, butterfly and check
valves are also part of the wastewater
treatment process and serve the same
function they did when water first
enters the system, albeit in reverse.
John Pensec is director of communications for
Mueller Water Products, Inc. Reach him at
jpensec@muellerwp.com.
VALVE MAGAZINE… beyond print
OUR WEBSITE
Start with ValveMagazine.com, where
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variety of new product write-ups, news
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OUR DIGITAL MAGAZINE
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Scroll through each page of the
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