Chemical Engineering September 2014 - 68

Water Management Special Advertising Section
Compact, smaller, and better value
GEMÜ valves represent a milestone in industrial plastic piping systems, saving space
and weight yet out-performing metal valves in corrosive environments
I
n plant engineering there is a great demand
for application-specific components
with a wide range of functions that
save space and weight, and are easy to
install. Compact, lightweight plastic diaphragm
valves fall into this category,
offering cost-effective alternatives to conventional
valve designs.
The new R690 pneumatic and R677
manual plastic diaphragm valves from
GEMÜ, the premier engineering specialists
for valves, measurement and control
systems, check all the boxes for most applications:
They are small and compact,
lightweight, and designed so that combinations
of several nominal sizes can be
installed on the same mounting height
plane. For installation, the valves are supplied
in all standard connections for the
different international standards.
Despite their compact size and smaller
dimensions, the new flow-optimized valve
bodies provide the same high flowrates
as the previous models. In some cases,
flowrates are even higher. Depending on
the valve design, they are reliable at temperatures
from -20°C to +80°C, and at
pressures up to 10 bar (150 PSI).
The product line comprises nominal
sizes from ½ -4 in. In the course of redesigning
its products, GEMÜ has also
succeeded in reducing the control air consumption
of the type R690 pneumatic actuated
version.
In addition to the standard optical position
indicators, options such as electrical
position indicators, positioners or process
controllers, pilot valves, seal adjusters and
stroke limiters are available. Valve bodies
are available in a variety of plastics (PVCU,
PP, ABS, PVDF, etc.) and with a range of
seal materials (EPDM, PTFE, FPM, NBR).
These compact plastic diaphragm
valves are suitable for use in chemical
process plants, for plant solutions in surface
finishing, coating and electroplating,
municipal and industrial water treatment,
fluid handling in technologies such
as reverse osmosis, neutralization, and
microfiltration, and for chemical processes
Lightweight yet capable: GEMÜ's
R690 pneumatic diaphragm valve series
with aggressive and corrosive media, such
as electronics manufacturing, fertilizers,
and detergents.
World-class overpressure protection solutions
Fike manufactures a wide range of rupture discs, both standard
and custom, to protect equipment against excessive pressure
From hygienic processes
to wastewater treatment,
Fike offers peace of mind
lies in rupture disc technology. The typical rupture disc begins to
respond to pressure in excess of the burst pressure in less than
1 millisecond. This means that a short-duration pressure spike that
is not detectable by normal process instrumentation will activate
the rupture disc, saving the process vessel from overpressure.
In addition to a full line of standard products, Fike also manuS
ince
1945, Fike Corp.
has provided worldclass
overpressure protection
solutions, and is the
industry leader in delivering
reliable yet innovative products
that exceed customer expectations.
From safeguarding critical manufacturing
processes to protecting pressure relief valves
(PRVs), Fike products are part of the critical path to lowering
costs and helping companies achieve higher profitability.
A rupture disc is designed to provide a leak-tight seal within
a pipe or vessel until the internal pressure rises to a predetermined
level. At that point the disc bursts, preventing damage to
the equipment from overpressure. Liquid-full systems create a
number of processing challenges, the solution to many of which
factures custom engineered rupture discs tailored to the application.
Fike engineers and application specialists consider many
important factors such as type of application, operating conditions,
inlet/outlet configurations, rupture disc specifications, and
special process requirements.
To support this work, Fike has an on-site flow laboratory and
a metallurgy lab. The Fike Flow Laboratory is a general-purpose
flow characterization laboratory for quantifying the performance
of rupture discs, rupture disc/relief valve combinations, and any
other device whose flow capacity or resistance to flow must be determined.
Test equipment for diameters of ¼-4 in. (DN6 to DN100)
allows a wide range of disc sizes and installations to be tested.
Specific applications are simulated to check that custom solutions
provided by Fike engineers will perform as specified.
The Fike Metallurgy Lab is used to gain understanding of the
behavior of materials necessary for different applications. Fike
is a single-source supplier giving full service for fire, explosion
protection and pressure relief. From product development to customer
support, Fike provides quality solutions.
68||||||CHEMICAL ENGINEERING||||WWW.CHEMENGONLINE.COM||||SEPTEMBER 2014
www.fike.com
www.gemu.com
http://www.gemu.com http://www.fike.com
Chemical Engineering September 2014

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