Chemical Engineering October 2013 - 25

FIGURE 3. The Xomox XLB lined ball valve offers smaller
actuators for reduced costs and space and weight savings. It allows
installation in space-restricted areas in parallel piping systems and is
fully lined with permeation-resistant PFA material as a barrier to corrosion
Ongoing corrosion testing based on pubCrane
ChemPharma & Energy
lished industry standards is also something
chemical processors must consider
when selecting valves for aggressive environments, "
notes Haberkost.
To meet the needs of harsh environments,
Ladish offers a complete line
of corrosion-resistant, stainless-steel,
and exotic-alloy gate and globe valves.
The globe valves are used for throttling
flow control. Shut off is accomplished
by moving the disc against the flow
stream rather than across it, as in the
case with a gate valve. The company's
gate valves are suited for water, oil
and gas service, as well as a variety
of other fluids. They are intended for
on-off flow control and should only be
used in the fully open or fully closed
position. When fully opened, fluid flow
through the valves is in a straight line,
www.rembe.com
resulting in minimum pressure drop
across the valve. Gate valves are bidirectional
and can be used for flow in
either direction.
Ladish's globe and gate products
are manufactured as full port, with
threaded, socket-weld, flanged and
butt-weld ends. Pressure classes include
150 through 1500, available in
a variety of materials to suit aggressive
environments.
Also designing to deal with challenging
applications,
Schubert &
Salzer Control Systems (Ingolstadt,
Germany; www.schubert-salzer.com)
re-engineered its pinch and pinch control
valves (Figure 2) to reliably shut
off and control fluids with granular
and abrasive particles, as well as viscous,
pasty and aggressive media.
The new 7078 pinch and 7079 pinch
control valves offer compact construction
with a rotating piston actuator, all
wetted metal parts made from 1.4435
1.4408
stainless-steel body,
FDAcompliant
seals for hygienic applications,
working pressures up to 6 bar,
FDA-compliant sleeve materials made
from NBR (nitrile butadiene rubber )
or EPDM (ethylene propylene diene
monomer), and sleeves with reinforced
woven fabric to increase service life.
Together with a collet and union nut,
a new type of fastener provides a fast,
secure and permanently drop-tight
connection between the pinch valve
and optional connections with female
thread welding ends, Tri-Clamp or
even adhesive sockets.
Fugitive emissions
Leaks from pressurized process equipment
in the chemical processing industry
generally occur through valves,
pipe connections, mechanical seals or
related equipment. " Due to the huge
number of potential leak sources at
large chemical facilities and the difficulties
in detecting and repairing
some leaks, fugitive emissions can
Ingenious Overpressure
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HEADQUARTERS / GERMANY
Gallbergweg 21
59929 Brilon/Germany
T + 49 (0) 29 61 74 05 - 0
F + 49 (0) 29 61 - 5 07 14
sales@rembe.de
Circle 28 on p. 60 or go to adlinks.che.com/45777-28
Circle 4 on p. 60 or go to adlinks.che.com/45777-04
CHEMICAL ENGINEERING WWW.CHE.COM OCTOBER 2013 25
All rights reserved - © REMBE - KUBELV-4C-E
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Chemical Engineering October 2013

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