Chemical Engineering January 2022 - 13

and gage. Sealed-For-Life outboard
shaft-seal arrangement separated
from product by an air-purge seal and
a drop-out opening. - Coperion KTron
Salina, Inc., Salina, Kan.
www.coperion.com
Industry's first complete
SIL 3-certified valve assemblies
These Fisher Digital Isolation final-element
solutions (photo) meet the design
process requirements of safety integrity
level (SIL) 3 per the IEC 61508 standard,
making them suitable for shutdown
valves in critical safety instrumented
system (SIS) applications. Without this
solution, users must specify all the individual
valve components, procure
each one, and assemble it into a working
whole. Even if these steps are done
correctly, this type of custom assembly
will still not provide all the benefits of
the Digital Isolation assembly, says the
company. The various components are
specifically selected to satisfy the application
requirements. The entire assembly
is sold as a fully tested and certified
unit, with a single serial number and associated
documentation delineating the
details of every part of the assembly. -
Emerson, Marshalltown, Iowa
www.emerson.com
This valve assembly offers low
cost and maintenance
The Double Dump Valve Assembly
(photo) is said to be a low-cost and
low-maintenance alternative to the
traditional rotary airlock feeder, and
provides a positive seal that can accommodate
either full vacuum or
pressure up to 100 psig. The air-operated
seat inflates to provide a longlasting,
high-integrity seal and easily
handles high cycling of dry granular
or fine powdered materials. The seat
automatically compensates for wear
when it inflates against the disc, extending
valve life considerably, the
company says. The Double Dump
Valve Assembly is available in carbon
steel and stainless steel in sizes from
2- to 30-in. diameter and in any desired
length. Other materials of construction
are available upon request.
- Posi-flate, St. Paul, Minn.
www.posiflate.com
This device prevents metal
contamination of rotary valves
The RotaSafe RS1 valve-rotor protection
system (photo) was developed
to protect food, pharmaceutical and
other ingredients from metal particulate
contamination. The device continuously
monitors rotary valve operation,
automatically detects contact
between the rotor and housing and,
in the event of detection, immediately
shuts down power to the drive motor
to stop the process. The rotary airlock
safety system is triggered before the
powders or other bulk materials can
become
contaminated by
foreign
matter and before the valve incurs any
damage from metal to metal contact.
- Gericke USA, Inc., Somerset, N.J.
www.gerickegroup.com
This thermoplastic butterfly
valve improves performance
The new 565 butterfly valve (photo)
valve is said to be strong yet lightweight.
It consists of high-performance
plastic components that include polyvinylidene
fluoride (PVDF) disc with fiber-reinforced
polyamide housing and
ethylene propylene diene monomer
(EPDM) rubber or FKM (Viton) seals,
making it ideally suitable for pressures
up to 16 bars and temperatures ranging
from -10 to 80°C. Available in sizes
from NPS 2 through 12 (DN50-300),
the 565 valve is 60% lighter than a
comparable metal valve, allowing a
single technician to safely and easily
handle it during installation. The valve
offers high corrosion resistance, long
service life and more effective use of
energy and resources during industrial
production, says the company. -
Georg Fischer LLC, Irvine, Calif.
www.gfps.com/us
Solids-handling diverter valve
has new features
The second generation of the PT45
Diverter Valve (photo) introduces new
features, such as adjustable alignment
stops located in the housing, position
indication from the tunnel itself, additional
actuation options and external
tunnel-position indication. A positive
food-grade rubber silicone seal at
each port is designed to help prevent
contamination. Additional features include
45-deg port-to-port rotation, a
two-way switching capability for either
dilute-phase or dense-phase conveying
applications, cast iron or aluminum
housing, tunnel, and end plates with a
316 stainless-steel actuator and arm
assembly, and inlet and outlet ports
flanged to mate 150# ANSI flange patterns.
Also included are a pneumatic
actuator providing a 2-4-s actuation
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
JANUARY 2022
Emerson
Posi-flate
Gericke USA
Georg Fischer
Schenck Process
13
http://www.coperion.com http://www.gerickegroup.com http://www.emerson.com http://www.gfps.com/us http://www.posiflate.com http://WWW.CHEMENGONLINE.COM
Chemical Engineering January 2022

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