Chemical Engineering October 2018 - 28

AS-Schneider
from 0.5 through 4 in., with socketweld,
butt-weld and flanged ends,
in pressure classes through ASME
4500#. The top-entry, cartridge-style
ball valves are said to be easy to inspect,
maintain and repair. The cartridge
can be conveniently removed
for onsite parts replacement, reassembly
and reinstallation. No welding
is required. The valve is available
in a variety of materials. - Conval,
Enfield, Conn.
www.conval.com
NewTek Sensor Solutions
Improved ball valve
design reduces torque
Process plants handling abrasive
materials, especially at high temperatures
and high pressures, often
need metal-seated ball valves, and
extreme operating conditions with
temperatures to 450°C and pressures
to 420 bars require special
sealing technology for ball valves
that are more rugged than standard
soft-seated ball valves. The patented
Dissolution ball valve design (photo,
p. 34) offers optimum distribution of
forces and loads in the ball valve, allowing
it to be actuated easily even
at pressures to 420 bars, says the
manufacturer. The seat and ball surfaces
are coated with Hardalloy and
carbide compounds at the metal
seated ball valve. During operation,
the forces needed to maintain
the tightness between the ball seat
and the valve body are only directed
onto the corresponding graphite
seal rings. The ball is spring-loaded,
which ensures a low, defined minimum
pressure and smooth, reliable
operation - AS-Schneider, Nordheim,
Germany
www.as-schneider.com
Emerson
Miniaturized position sensor
can handle harsh conditions
The M-375 Series Miniature AC
LVDT (photo) is an a.c.-operated
position
sensor
for
applications
with harsh and high-pressure environments
with limited space. It is
lightweight and has a compact 3/8in.
dia. It has a corrosion-resistant,
nickel-iron alloy housing and core,
and operates in temperature extremes
of -65° to 400°F, to provide
reliable,
linear
IEP Technologies
28
position
in harsh and high-pressure industrial
applications with tight space
and weight restrictions. It provides
high-response dynamic measurement
for machine operations, such
as robotics, automatic inspection
equipment, plastic injection molding,
hydraulic cylinder and valve
positioning, downhole drilling and
dimensional gaging, says the company.
The LVDTs in
this product
family are available in many measurement
ranges. - NewTek Sensor
Solutions, Pennsauken, N.J.
www.newteksensors.com
Ultrabright valve-position
indicator boosts plant safety
The TopWorx TV-LED Switchbox
(photo) features an ultra-bright,
easty-to-see light-emitting diode
(LED) visible position indicator. Visible
at long distances, the position
indicator communicates valve position
remotely to the control room or
plant personnel, to improve safey
at the facility. The device can be ordered
for monitor-only applications,
or integrated with a solenoid valve for
on/off valve control. - Emerson, St.
Louis, Mo.
www.emerson.com
feedback
Explosion-isolation flap valves
provide explosion protection
The self-actuating IFV and IFV-M
Isolation Flap Valves (photo) mitigate
the risk of fire and dust explosions,
keeping flames and
explosions from propagating to
upstream equipment linked by
ductwork. An isolation flap valve
installed in the duct is closed rapidly
by the pressure wave from the
downstream explosion, ahead of
the flame-front arrival. By stopping
the flame from reaching the
upstream vessel, it prevents the
flame and explosion pressure
from reaching attached vessels
and creating a secondary and
often more energetic explosion,
says the manufacturer. The IFV-M
model adds integrated monitoring
of the flap position and dust accumulation
in the valve body, meeting
the requirements of the OSHA
Combustible Dust Directive, NFPA
654 and NFPA 69. These valves
are available in a variety of sizes
for dust class ST1 and ST2. - IEP
Technologies, part of Hoerbiger
Wien GmbH, Vienna, Va.
www.hoerbiger.com
n
Suzanne Shelley
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
OCTOBER 2018
http://www.newteksensors.com http://www.conval.com http://www.emerson.com http://www.as-schneider.com http://www.hoerbiger.com http://WWW.CHEMENGONLINE.COM
Chemical Engineering October 2018

Table of Contents for the Digital Edition of Chemical Engineering October 2018
