8 Series
6
Standard compressed fiber gaskets that will
withstand temperatures of 450°F / 232°C or higher
are normally used, but other materials of equal or
higher temperature capability may be used at the
customer’s discretion.
Positioning
CAUTION
The high pressure deflagration
flame arrestor is fitted with lugs for
lifting the element assembly during
servicing operations. These lugs are
not intended for lifting the entire unit
during installation. Damage to the high
pressure deflagration flame arrestor may
result from improper lifting. The units
should be lifted using appropriately
rated Nylon (PA) straps rigged on the
outside of the tension studs.
The arrestor should be positioned such that the
element is accessible for removal. The tension studs
are supplied with jacking nuts on one half of the bolting
circumference. Install the unit so that the jacking nuts
(on the inside of the studs) are positioned on the
opposite side from the direction that the element
assembly will be removed.
Models that have drain plugs are designed for
horizontal installation and should be installed with the
drain plugs aligned at the bottom of the unit. Models
that have pressure taps are designed to allow pressure
gauges to be installed on both sides of the flame cell
assembly to determine blockage. The pressure taps
should be aligned at the top to allow easy viewing
of the gauges. Units that are equipped with optional
internal cleaning systems should be connected to a
source of cleaning media such as water, steam or
other suitable solvent.
Flow Direction
The Enardo high pressure deflagration flame arrestor
is bi-directional and can be installed either vertically or
horizontally. Consideration should be given to non-
symmetrical assemblies that include features such
as clean-out ports, temperature monitoring device or
other options that might have a preferred installation
direction to suit the needs of the customer.
Piping Expansions and Reductions
Adjacent to High Pressure Deflagration
Flame Arrestors
WARNING
!
No instrument, tubing or other device
whatsoever shall circumvent the high
pressure deflagration flame arrestor
in such a manner to allow a flame path
to exist around the flame element of
the arrestor. When instrumentation is
installed in such a manner that it creates
a path circumventing the flame element
of an arrestor, measures must be taken
to prevent passage of flame through the
instrumentation device and/or system.
Instrumentation must be capable
of withstanding the maximum and
minimum pressures and temperatures to
which the device may be exposed and at
a minimum be capable of withstanding
a hydrostatic pressure test of 350 psig /
24 bar.
An Enardo high pressure deflagration flame arrestor
may be installed in any vapor control line that is
smaller than or equal to the nominal pipe diameter of
the arrestor’s connection flanges.
When it is necessary to increase the diameter of the
piping on the downstream side of the high pressure
deflagration flame arrestor, a length of pipe at least
120 pipe diameters must be installed between the
high pressure deflagration flame arrestor and the
expansion. A pipe diameter is considered as the
inside diameter of pipe having a nominal size equal
to the high pressure deflagration flame arrestor’s
connecting flanges.
