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Pinch valve
Pinch valve - a widely accepted design
for suited to
industrial and municipal services where abrasive,
corrosive, plugging prone slurry, sludge,
liquid or bulk solids are processed.
Pinch
valve - a cost-effective alternative to metal
alloy, lined, or coated ball, plug, gate, and
diaphragm valves that do not offer comparable
mechanical advantage, chemical resistance, effective
shut-off, or 100% full flow.
Pinch valve - having semi-open split body design for
easy maintenance, performance, quality and service
capabilities.
Pinch valve - elastomer tube (also referred to as
sleeve, hose, muff) is the recurring cost effected to
pinch valve purchase price.
Pinch valve - problems arise due to elastomer failure as the
rubber sleeve is stretched and stressed during closure. This
often results in the cutting of the sleeve around the
pinch area, or incomplete closure (throttling) resulting in high
velocity wear and shortened sleeve life. To overcome
major issue of pinch valve sleeve failure, specialized
elastomer sleeve with good reinforcement is required
for negative pressure, vacuum conditions and good life of
rubber sleeves. Other improvements include redesigned
elastomer sleeve with reinforcement that ensure higher
cycles and extended sleeve life.
Pinch valve sleeves
are resistance to abrasion, chemicals, temperature,
pressure have expanded the applications.
Pinch valve - usage has increased since the
availability of valves with options of Gear operated,
Chain wheel operated,
Pneumatic operated On/Off and pneumatic throttling
control
Pinch valve -
users are no longer limited to non-standard
face-to-face designs that make maintenance problematic
and restrict wider use.
Pinch valve - initial purchase price
is just one portion of the total ownership cost. As
erosive and corrosive media wear the rubber
sleeve / liner / muff / tube, which is the only
replaceable part of pinch valves, making pinch valve
most economic. Elastomer quality, price, and frequency of
sleeve replacement are a major component of life-cycle
costing, as are direct and indirect costs of valve
removal and reinstallation of pinch valves. Accordingly, paying a bit more for quality
at the outset can often be recouped in less than a
year by simply avoiding the cost of one maintenance
incident. For details on Pinch valve sleeves -
http://www.woodlandengineers.com/Rubber_Sleeve.html
Pinch valve - manufacturing technology, design and quality employed range from conventional
design suppliers to those offering highly engineered
designs and dedicated service support.
Pinch valve -
a comparison of features
among major manufacturers facilitates the decision
making process.
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