Seal material approved drinking
for
Novus 34, the non-asbestos sheet
sealing material from Dutch
Royal Econosto Group’s
subsidiary, Econosto Ltd, has
been approved for use in potable
water applications in the UK.
This British Water Byelaw Scheme
certification means that the gasket
material can be used in direct contact
with both cold and hot water up to
85 “C (185 “C), making ir suitable
for both storage and heating
applications of drinking water.
Novus 34 is just one of the sheet
materials introduced as an
alternative to compressed asbestos
fibre (CAF), and incorporates a
blend of para-aramid and inorganic
fibres with special additives bound
together with a high quality nitrile
rubber. Testing has shown it to be
suitable for demanding applications
including the containment of oils,
solvents, steam, gases such as
oxygen, and now potable water
applications.
Novus 34 also meets the
requirements of BS7531 Grade X,
DIN-DVGW 96.01 e-845 and
BAM, which means it suitable for
oxygen service, where pressures up
to 160 bar (2256 psi) and
temperatures of 90 “C (194 “C) are
present.
Contact: Econosto Ltd, Hunsworth Lane,
Cleckheaton, BD19 3UJ, UK. Tel:-+44 1274 878 787; Fax: +44 1274 862 588.
New eyelet
catalogue A new brochure describing
Thermoseal In& complete range of 316 stainless steel eyelet
gaskets has been published.
The colour catalogue, entitled
“The eyelets have it,” highlights that
these eyelet gaskets are available in
tW0 non-asbestos compressed
materials, namely KLINGER@ sil C-
4433 and KLINGER@ sil C-4439.
The eyelet gaskets have improved
resistance to blowout and corrosive
chemicals and are available in the full
range of ANSI sizes. The brochure
also details the materials’ properties
such as creep relaxation, sealability,
compressibility and recovery, and hot
compression set.
The C-4433 eyelet gasket has
been designed for general purpose
and steam service, while the C-
4439 eyelet is resistant to pressure
and temperatures fluctuations Both
gasket materials conform to the
criteria of the fourth edition of the
API-607 standard.
Contact:Thermoseal Inc., 2350
Campbell Road, Sidney, OH 45365- 9573, USA. Tel: +l 937 498 2222; Fax: +I 937 498 7544.
Non-fogging foam sealing tape Gaska Tape Incorporated, based
in Indiana, USA, has added a new low out-gassing foam to its
Polymeric Series Foam Tape. The new foam is suitable for a
number of automotive gasketing
applications and satisfies the SAE
J-1756 specification for motor
products. This is a standard set by
the Society of Automotive
Engineers and is an adaptation of
the Ford fogging test. Fogging
refers to the residue left on the
inner surface of the glass in new
cars by vapours from plastics,
rubber and foam. According to the
company this latest polymeric foam
gives off significantly fewer vapours
and hence causes less fogging of the
windscreen.
Other internal applications for
the polymeric foam tape include
engine gasketing, as it can
withstand a wide temperature
range, -35 “C (-31 “F) to 116 “C
(240 “F). It is also suitable for
external automotive applications, as
it is resistant to UV light and
sunlight, as well as chemically
compatible with petrol, oil,
hydraulic fluid, brake fluid,
alcohol, anti-freeze and a number
of acids including sulphuric acid
and hydrochloric acid.
The whole range of Polymeric
Series Foam Tapes are available in a
variety of densities to suit the
apphcatlon and come with a skin
on two sides for improved bonding
to substrate materials, as well as
single or double-sided water-based
or solvent-based adhesives.
Contact: Gaska Tape Incorporated, 1810 W Lusher, Elkhart, PO Box 1968, IN 46517-I 968, USA. Tel: +I 219 294 5431; Fax: +I 219 293 4504.
Valve stem packing saves money James Walker & Co Ltd helped rectify the failure of a control valve that was causing unscheduled and highly expensive equipment
downtimes at a British-based
petrochemical plant.
At refinery facilities it is we11
accepted that it’s difficult to keep
control valves in good conditions
either due to ingress of dirt or
improper installation.
At a British petrochemical plant,
staff had experienced problems
with a level control valve on a
reactor vessel for 10 years. The
valve operated in a temperature of
30 “C (86 “F) and 45 bar pressure, James Walker supplied the plant and on average it caused an with a trial set of Kalrez@ KVSP unscheduled reactor shutdown replacement seals, which is a once a year. The cost of a shutdown chevron type of packing set, with was nearly f60 000. Therefore, the alternate rings of PFTE and Kalrez management of the plant was keen perfluoroelasromer, from DuPont to find a valve packing that offered Dow Elastomer. long term fluid sealing. Prior to The valve was refurbished, approaching James Walker for reinstalled and monitored to assistance, they had tried a determine the performance of the graphite-based stem packing set new stem packing. Thirty months that had been unsuccessful. after continuous service the control
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