in the chemical processing and related
industries highly corrosive and toxic
process fluids require dependable
pumping solutions
plant output requirements demand safe
and rugged design features that ensure
extended uptime and because corrosion
and wear are prevalent in chemical processing
processing
advanced materials and maintenance
friendly features are essential
for these reasons the process industry's
leading enterprises turn to flow serve
conforming to iso 2858 and iso 5199
design criteria flowserv's derco mark
iii iso chemical process pump delivers
unmatched performance and reliability
since introducing the world's first
chemical processing pump more than three
quarters of a century ago flowserve has
pioneered the industry's most important
milestones including
the first back pullout design
the development of groundbreaking alloys
such as durimet 20 and
cd4mcun the first fully lined
fluoropolymer pump and the introduction
of seal sentry seal chambers which
revolutionized the pumping industry's
focus on mechanical seal reliability
with an unparalleled list of design
features aimed at reducing the total
cost of ownership
today's derco mark iii iso frame mounted
chemical process pump is unmatched in
engineering sophistication design
simplicity and operating reliability [Music]
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ce marked and compliant with applicable
directives such as atex and ghost
the derco mark 3 iso is available in 45 sizes
sizes
from frame 1 low flow high head designs
to frame 4 high capacity models
the derco mark 3 iso handles flows to 1
400 cubic meters per hour heads to 220
meters working pressures to 25 bar and
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the derco mark iii iso features a true
back pull out design
the casing remains in line bolted to the
suction and discharge piping the
remainder of the pump can be removed for
repair or maintenance without breaking
piping connections
most importantly all critical settings
including impeller clearance can be
easily made before the pump is reinstalled
reinstalled
ensuring the pump is rapidly returned to service
conforming to iso 2858 and iso 5199
design criteria the derco mark 3 iso
boasts a heavy duty casing with an
integral foot
and a multi-ribbed discharge flange for
superior resistance to pipe loads and
improved reliability
optional jacketed and centerline casings
among the most important innovations in
chemical process pumps the derco mark
iii iso reverse vein impeller offers
repeatable performance throughout the
life of the pump
optimal predictable seal chamber
pressures and thrust loads resulting
from balance hulls provide ideal
operating conditions for mechanical
seals and pump
bearings with the critical running
clearance set off the rear cover and not
the casing several advantages are gained
impeller and mechanical seal settings
can be made in the shop on the bench
instead of under adverse field conditions
optimal seal chamber pressure is
re-established after every impeller adjustment
adjustment
also the pump's original hydraulic
performance is re-established after
every impeller reset providing optimum
performance and lowest possible energy consumption
consumption
with the reverse vane impeller the rear
cover is the active wear surface
the flat rear cover surface can easily
be machined or replaced if needed
finally the pump's advanced hydraulics
and state-of-the-art impeller design
developed using flowserv's proprietary
hydraulic design software hxs provide
outstanding energy efficiency and
hydraulic performance
the derco mark iii iso is also available
with the precision cast front vane open
style impeller
back vanes provide axial balance and
optimal seal chamber pressure
this impeller is fully interchangeable
with the reverse vein impeller and is an
excellent choice for applications
containing fibrous or stringy materials
and services requiring high shear
besides serving as the critical running
clearance and wear surface the rear
cover also houses the mechanical seal
chamber it is here that flow serve
innovation is focused on reducing the
chance of mechanical seal failure
recognized throughout the industry as
the number one contributor to pump
failure and process downtime
the standard derco mark iii iso pump
incorporates the award-winning derco
seal sentry seal chamber which features
an oversized tapered bore with flow modifiers
modifiers
this innovative design maximizes
mechanical seal life by creating an
environment free of erosive solids
seal sentry flow modifiers redirect flow
from circumferential to axial
minimizing erosive wear near the seal
faces and providing a constant flush
which reduces heat buildup
and because the seal chamber is tapered
vapour bubbles cannot form near the seal
faces preventing heat checking and
premature failure
the tapered design is also self-draining
for safe disassembly during maintenance
the flushing action of the seal sentry
seal chamber is so effective that
expensive flush plans such as plan 11 32
52 and 53 can often be eliminated
this not only reduces initial pump cost
but can also eliminate costly plant
water usage
flowserve recognizes that not every
application or mechanical seal can be
accommodated by a single seal chamber design
design
that's why multiple seal sentry designs
with tapered and cylindrical bores are available
the innovative wet end features that
deliver optimum hydraulics predictable
performance and ideal operating
conditions for mechanical seals are only
half the story with the derco mark iii iso
iso
assembled in a specially constructed
clean environment the mark iii iso's
rugged power end features a two-piece
bearing frame design to mitigate the
risk of mechanical failure under even
the harshest operating conditions
standard equipment includes labyrinth
seals a magnetic drain plug
large sight glass
and a top mounted vent and oil filler to
ensure reliable performance and ease
maintenance in addition the mark iii iso
power end may be retrofitted to iso 2858
compliant pumps
offering users an opportunity to
standardize equipment and lower
inventory carrying costs
the optional iso 3a power end is also
available with the derco mark 3 iso pump
incorporating non-contacting bearing
isolators and a plugged top vent the iso
3a further extends mean time between
repair or planned maintenance and
carries a lifetime warranty
both the standard power end and the iso
3a power end include the ips beacon
electronic temperature and vibration
condition monitor as standard equipment
if preset levels are exceeded led
indicator lights on the unit are
activated to warn operators of potential problems
problems
enhanced data logging and communication
systems that use the existing monitor
the derco mark iii iso shaft and bearing
system is designed to improve pump
performance and reliability
the robust and stiff solid shaft ensures
less than 0.05 millimeter shaft
deflection of the seal face and provides
a low l3 over d4 shaft stiffness ratio
every derco mark 3 iso pump is supplied
with a deep groove ball bearing and
double row angular contact thrust
bearing as standard providing life in
excess of the minimum specified by iso 5199
5199
for users who need additional assurance
and reliability it can be supplied with
a deep groove ball bearing and
reinforced duplex back-to-back angular
contact thrust bearing providing l10
bearing life in excess of 50 000 hours
bearings are oil lubricated via splash
bath as standard grease lubrication can
accurate impeller setting is crucial to
optimum process pump performance
because the reverse vane impeller's
critical running clearance is between
the impeller and the rear cover
impeller and mechanical seal settings
can be established without installing
the pump into its casing in the field
the result is significant maintenance
time savings when returning the pump to service
service
to facilitate setting the impeller the
derco mark 3 iso incorporates the
industry's most innovative external
impeller adjustment mechanism a
to set the impeller the bearing carrier
is turned counterclockwise until the
impeller lightly touches the rear cover
then by turning the bearing carrier
clockwise and using the visual
indicators that are cast into the
bearing carrier the running clearance
can be established in less than 20 seconds
seconds
tightening the set screws ensures the
setting is held during operation
the result is quick and easy restoration
of pump performance to original specification
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in addition to the standard iso design
the derco mark iii iso is available in
numerous configurations for special
process services
the derco mark iii iso recessed impeller
design provides reliable low shear
pumping of friable solids and stringy or
able to withstand run dry conditions
derco mark iii iso unitized self
self-primer is designed to draw liquid
from sources below ground level or from
sources with no positive pressure to
with a wet end conforming to iso 2858
and iso 5199 design criteria the derco
mark 3 iso close coupled pump provides a
compact space-saving arrangement ideal
for industrial processes or
installations where space is at a premium
premium
furthermore the close coupled
configuration uses readily available
electric motors allowing the user to
select the type best suited to the application
the cp-xs magnetic drive pump provides
leak-free pumping of hazardous toxic
incorporating the derco mark iii iso wet
end the cpxv vertical sump pump is
compliant with iso 5199 and can be
customized to meet a wide range of
application needs
in addition to specifying the sump depth
users can choose from a variety of
materials of construction and multiple
mechanical seal designs for oil and gas
installations the cpxv is available with
many iso 13709
and api 610 compliant features
and as with the standard frame mounted
iso configuration all these designs are
ce marked and compliant with applicable
the derco mark iii iso chemical process
pump is built for safety reliability and
low total cost of ownership its benefits
are many including
renewable high efficiency performance
over the life of the pump with the
reverse vane impeller
optimal predictable seal chamber
pressures that are re-established after
every impeller setting
an ideal mechanical seal environment
with the seal sentry seal chamber
rugged two-piece bearing frame capable
of being retrofitted to all iso 2858
compliant pumps
robust shaft and bearing designs that
minimize shaft deflection and extend
mechanical seal and bearing life
fast and accurate reverse vein impeller
setting with the industry's most
innovative external impeller adjustment mechanism
learn more about flowserv's derco mark
iii iso chemical process pump and
related products and services
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