James Walker Moorflex
The Product Profile
Introduction
James Walker Moortiex gaskets set the
standards for sealing technology excellence
world-wide. Metal, graphite, PTFE, non-
the range of
gasket materials availabe is as diverse as
the operating environments to which they.
are subjected, Wherever a pipe or valve is
connected there's a Moorflex gasket to
ensure the join is safe, strong and totaly
rollable - from reactors to heat exchangers,
pipelines to pressure vessels.
‘metallic and semi-metalli
In order to provide the best in
service and reduce the costs of
downtime, Moorfiex has
established a network of
‘manufacturing and service centres
‘world-wide. This network is
continually being reviewed and
‘expanded to meet the constantly
rising demands of the energy.
industries,
‘Services offered in conjunction
with other James Walker Group
‘companies include:
‘Leak detection and repair,
Tension control fasteners,
(On site repair and installation.Soft Cut Gaskets
‘Non-metallic gaskets in a wide
‘ange of materials (including
‘materials to replace ail
asbestos prodlacts) for
Standard and non-standard
fhanges.
Spiral Wound Gaskets
Metaflex spiral wound gaskets
‘are manufactured from a v
‘shaped metal strip, spirally
wound with an inlay of hilior
‘between each tur.
‘Spiral wound gaskets are
‘available in both standard and
‘non-standard designs.
Kammprofile Gaskets
Metal gaskets with grooved
faces and sealing layers for
heat exchangers, vessels,
reactors and flanged
connections.
Ring Joint Gaskets
The R, AX and BX series of
‘ing joint gaskets are designed
fo™meet API, ASME, BS and
BIN standards. Moorllex are
licensed by the American
Petroleum Insitute to apply
the API monogram to gaskets
in accordance with API 64
PSLa.
Eyeletted Gaskets
Graphite and non-metallic
gaskes fited with internal and
‘external reinforcements 0
Improve handling and
performance.
Ze
Metal Jacksted Gaskets
Widely used in heat
‘exchangers, pressure vessels,
valves and pumps, metal
Jacketed gaskets feature a soft,
pilble filer core encased in
‘metal, to offer chemical and
thermal resistance in diverse
‘operating conditions.
Multiple Pressure
Gaskets
‘Semi-metalic gaskets capable
of satisfying the complete
‘pressure range of a singlo
‘nominal bore pipeline - one
(gasket fis ail Clas ratings.
Machined Gaskets
Working in conjunction with
‘ur customers, Moortiex has
‘considerable experience in
designing and manufacturing
‘gaskets forall applications.
Metal Reinforced
Graphite
These resiliont gaskets are
‘manufactured trom high purity
‘expanded graphite, reinforced
with metalic inserts to ease
installation and enhance
performance.
AM
Corrugated Gaskets
Resilient, metal gaskets
Suitable for a wide range of
Hanged connections,
5
MLL
Flange Insulation Sets
and PTFE Inner Rings
for Ring Joint Gaskets
‘Suitable for the electrical
‘solaion of pipelines and pant
In cathoalc protection systems
{andlor hazardous areas.
Custom Designed
Gaskets
‘Spacia! designs (and
‘2ssociated components) 10
‘meet the requirements of
Original Equipment
‘Manufacturers.
a |
PTFE Gaskets
Flat gaskets witha high
‘chemical resistance, supplied
ether as solid or envelope
designs for pipe flanges and
vessels.
Metagraf Gaskets
Comugated metal gaskets with
graphite seating layers for heat
exchangers, vessels, reactors
‘and flanged connections.
Solid Metal Gaskets
Fiat and profiled metalic
‘gaskets are availabe to meet
allintemational standards and
‘Specifications. Special gaskets
can also be developed to
‘Satisfy individual requirements
Rubber Coated Ring
Joint Gaskets
Reusable ring joint type
‘gaskets used inthe tasting of
valves and well head
assembles.
‘Rubber coating prevents
clamage to tanges and groove
scuffing,James Walker Moorflex
Flange Insulation Sets
Introduction
‘James Walker Moorfex flange insulation
‘sets are installed worldwide in numerous
pipeline systems, where they perform an
‘essential rola inthe isolation of the flow of
‘electrical current, Moortlex have
‘considerable experience in the manufacture
‘and utilisation of flange insulation
‘components and are committed to proviging
‘our customers with cost effective and efficient
solutions.
For quality products and superb service,
industry puts its trust in Moortlex.
Typical apy
In order to ensure efficient operation of
‘cathodic protection systems for stainless,
steel pipelines, itis necessary to divide the
pipelines into manageable lengths. The
installation of flange insulation sets at each
flanged joint ensures effective sealing and
isolation.
“The transter of volatile fuids through pipetine
systems may resuitin explosive conditions,
which could be ignited by stray electrical
‘currents, either from cathodic protection
systems or the phenomenon known as ‘eddy
‘currents’. Tis potentially disastrous situation
‘can be minimised or eliminated through the
installation of appropriate flange insulation
‘ets at strategic points.
‘Contact between dissimilar metals wil result
in accelerated corrosion of the weaker
‘material due to galvanic corrosion. This
contact normally takes place between
flanges, and can be eliminated by the
installation of suitable flange insulation sets.Design concept & gasket styles
Insulating Wa
TYPE D SETS
Utlising an oval section gasket
‘manufactured from a suitable insulating
‘material, Type D Sets fit into a standard AT
flange ring groove.
TYPE F SETS
‘These sets are suitable for raised face
flanges, and use a central gasket which
locates inside the bolt circle of the flange.
Whilst not being as efficient as Type E sets,
they have the advantage of allowing fiting
without complete separation of the flange,
‘and may be regarded as “drop in” gaskets.
(One Full Length Insulating
Sleeve for each bolt
‘tee! Washers for each bolt
for eact bolt
TYPE E SETS
This styl is suitable for raised face and fat
flanges. The use ofa fll face gasket reduces
the risk of electrical bridging and the ingress
of foreign matter between the flanges.
This style is available in both full face and
inside bok circle versions and incorporates
an elastomeric sealing ring in the gasket
faces. Appropriate selection of insulating
and sealing materials provides a versatile
set with higher chemical and temperature
resistance.
Itis essential that such a flange insulation
‘set arrangement has the following design
criteria applied to achieve the optimum
results:
+ The electrical resistance properties of the
components are balanced forthe purpose
and location in the insulation system.
+ The components aré manufactured from
Insulating materiats wth high compressive
strength and good stability. Under no
circumstances should materials which
‘express cold flow properties be used, 3s
‘relaxation may occur after bol tightening
{s completed, Tis wil resuitin a reduction
in the load applied to the gasket and
leakage will take place.
Flange insulation sets compris the flowing
Components which ensure that full elecical
isolation is achieved
1 -Gentral insulating gasket which is fited
between the flanges.
1 «Insulating sleeve per flange bott.
2 -Insulating washers per flange bolt
2.-Metal backup washers per flange bot.
Note: The efficiency of the components
may be enhanced by over-wrapping
the gap between the flange faces,
with heavy duty insulating tape.Material selection
How to order
1 Quantity
2. Nominal bore and flange specification
3 Style trom table, eg E, F, D, G
4 Materials
CENTRAL GASKET
NEOPRENE FACED PAPER REINFORCED PHENOLIC.
PLAIN COTTON REINFORCED PHENOLIC
HIGH DIELECTRIC STRENGTH CNAF
GOTTON REINFORGED PHENOLIG WITH NITRILE SEALS
GLASS REINFORCED EPOXY WITH VITON SEALS
PLASTIC COATED SOFT IRON
INSULATION SLEEVES
REINFORCED PHENOLIC
SPIRALLY WOUND POLYESTER MYLAR
‘SPIRALLY WOUND NOMEX
INSULATION WASHERS
COTTON REINFORCED PHENOLIC
GLASS REINFORCED PHENOLIC
GLASS REINFORCED EPOXY
STEEL BACK UP WASHERS
(CARBON STEEL ZINC PLATED
STAINLESS STEEL AISI 316
Note: Maximum temperature and pressure
‘guides should not be used
‘simuitaneously, contact James Walker
‘Moortiex for advice.
This information i intended as a general
‘guide only and is based upon testing of
insulation components, not virgin materials.
Material data sheets and recommendations
available on request. Additional materials
are available for extreme applications.
s
=
a3
400
115
155
120
115
140
185
NA
NA
DIELECTRIC
STRENGTH VOLTS™MIL
350
200
500
700
200
175
NA
NA
ee 09 WATER
£ & & & & assonrrion
06
os
os
O4
on
NA
NA
COMPRESSIVE
STRENGTH Nimm'
82
300
400
NA
NA.
NA
400
400
NA
NAJames Walker Moorflex
Flange standards
N.B. Gaskets for non standard
flanges are also readtly available
Gaskets can be manufactured in accordance
with all relevant gaskets standards to suit
the following flange designations:
ASME B16.5
BS 1560
BS 10
ASME B16.47 SERIES B (API 605)
ASME 816.47 SERIES A (MSS-SP 44)
BSEN 1092 (BS 4504)
DIN FLANGES
JIS FLANGES
FRENCH NF STANDARD
Introduction
‘Semi-metallic gaskets are widely used on
the following services:
Steam
‘+ boiler handhole, tubecap and
‘manhole assemblies
‘+ steam and feed water pipe flanges
+ feed water heaters
+ valve bonnets
= autoclaves
Petro-chemicals
* catalytic cracking plant
+ vessel closures
+ platformers
+ ine tanges
+ heat exchangers
valve bodies
Marine
+ boilers
+ deaerators
‘+ main feed pumps
+ main steam lines
= LPand HP toed
+ alrejectors
+ water heaters
= diesel engines
Nuclear
+ cooting circuit flanges
(helium and carbon dioxide)
high temperature gas ines
* pressure vesseis
+ valves
Hydraulic
+ high pressure line flanges
* pump and valve bodiesSemi-Metallic gasket types
Metakamm®
Kammprofile
Gaskets
Expanded Graphite
Gaskets
Plain or reinforced
Graphite & compressed fibre
Metcom
Multi-pressure
Gaskets
MetexSpiral wound gaskets
Metaflex® gaskets are
manufactured from V-shaped
‘metal strips, spirally wound with