Chemical Engineering May 2013 - 68

Gulf Coast Special Advertising Section
Plastic control valves handle corrosive chemicals
Collins 2-in. valves and actuators are specially designed to handle corrosive fluids -
acids, bleaches, chlorine, pH control - and aggressive environments
C
ollins Instrument Company's line of
economical 2-in. flanged plastic control
valves handle corrosive liquids including
hydrochloric acid, caustic, sulfuric acid,
and many others. With bodies of either
PVDF or polypropylene, these highlyresponsive
control valves are specifically
designed for use with corrosive media
and/or corrosive atmospheres.
Suitable for applications in numerous
industries, including chemical, petrochemical,
pulp and paper, and municipal, these
valves are extremely corrosion-resistant,
and feature fast-acting positioning (stroke
rate approximately 1⁄2 in./s). They are available
with a wide selection of trim sizes, in
globe, angle, and corner configurations.
The differential-area piston eliminates
the necessity for auxiliary loading regulators.
All actuator parts apart from the
integral positioner are molded of glassfilled,
UV-inhibited polypropylene. Before
shipment, the aluminum positioner and a
portion of the cylinder are immersed in Dip
Seal to provide atmospheric protection.
Plastic valves and actuators from
The integral positioner eliminates the need
for external linkages which are subject to
corrosion and malfunctioning. Valves may
also be furnished without a positioner for
on/off applications.
Collins also offers a plastic pneumatic
actuator. The combination of a plastic
actuator and a plastic valve body provides
an effective way to handle both corrosive
materials flowing through the valve, and
harsh environments that can attack the
outside of the valve and actuator. Collins
plastic control valve packages withstand
salty marine atmospheres as well as industrial
environments that are too corrosive
for metal valves and actuators.
Collins actuators incorporate a unique
internal locking ring to attach the cylinder
to the yoke. A semicircular groove is
machined inside the lower edge of the
cylinder, and a matching groove cut in
the yoke. When the yoke and cylinder are
assembled, a flexible polypropylene rod is
inserted into the groove through a slot in
the side of the cylinder, securing the two
sections together.
Along with its corrosion resistance the
Collins control valve features a stem packing
arrangement that virtually eliminates
the problem of fugitive emissions, thereby
protecting the environment.
Located on the Texas Gulf Coast in
the town of Angleton, Collins Instrument
Company has been serving the chemical
and petrochemical industry for over
65 years.
50 years of service for heat transfer fluid systems
Therminol heat transfer fluids from Eastman have been used in gas processing,
refining, oil and gas pipeline operations and reprocessing used lube oils for 50 years
other heat transfer options.
In gas processing and fractionation, Therminol fluids are frequently
used to heat gases for regenerating solid desiccants (such
as molecular sieve) in gas dehydration beds; to reboil liquid desiccants
(such as glycols) used for gas dehydration; to regenerate
liquid solvents (such as amines) used for gas sweetening; to heat
gas stabilization and NGL fractionation reboilers; and for other
gas processing operations.
In oil processing and refining, Therminol fluids are often used
to enhance oil/gas/water/sediment/salt separation and for other
processing and refining operations such as low-sulfur gasoline
production, solvent extraction, and sulfur recovery.
Therminol heat transfer fluids have applications in transportation
too. Pumping stations along oil and gas pipelines often
require heating to control the viscosity of oil streams, and to prevent
condensation of components from gas streams.
Therminol heat transfer fluids have proven capable of meeting
T
herminol heat transfer fluids are commonly used in offshore
and onshore oil and gas processing, fractionation, refining,
transportation,and recycling operations. Therminol 55, Therminol
59, Therminol 62, Therminol 66 and Therminol VP1 have successfully
demonstrated low-cost, reliable, and safe performance in
these applications for five decades.
Therminol fluids are selected because they provide lower
capital and operating costs, and better temperature control, than
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these requirements in virtually any environment. And the reprocessing
of used lubricating oils involves operations at very high
temperatures and high vacuum, for which Therminol heat transfer
fluids are ideal.
A variety of Therminol fluids are available with low vapor pressure,
high thermal stability, and good heat transfer performance,
supporting process needs at virtually any temperature.
www.therminol.com
www.collinsinst.com
http://www.collinsinst.com http://www.therminol.com
Chemical Engineering May 2013

Table of Contents for the Digital Edition of Chemical Engineering May 2013
