INSTALLATION AND MAINTENANCE INSTRUCTIONS
Reverse Acting Rupture Disc Assemblies
Rupture Disc Models: SRX, SRL, Axius, ATLAS, AGT
Holder Models: SRX, SRL/SRLO, XL/XLO, ATLAS/ATLAS-LO
704 SW 10th Street · P.O. Box 610 · Blue Springs, Missouri 64013-0610 U.S.A. · (816) 229-3405 · www.fike.com
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WARNING
•
Read these instructions carefully and completely before
attempting to unpack, install or service the rupture disc
and holder.
•
Do not vent a rupture disc assembly to an area where it
would endanger personnel.
•
Install the rupture disc assembly in such a way that
equipment in the area will not prevent rupture disc from
opening or be damaged by system discharge.
•
A baffle plate on the outlet end of vent piping does NOT
necessarily prevent potentially dangerous discharge.
•
Piping should be braced to absorb shock when the rupture
disc ruptures.
•
Install the enclosed DANGER sign in a conspicuous
location near the zone of potential danger.
•
1” (DN25) Axius is not suitable for liquid systems at burst
pressures less than 20 PSIG (1.38 BARG) with an inlet
piping length greater than 10 IN (25 cm)
•
¾” (DN20) Axius is not suitable for liquid systems at burst
pressures less than 30 PISG (2.07 BARG) with an inlet
piping length greater than 8 IN (20 cm)
•
ATLAS not suitable for liquid systems in sizes 14” and
larger.
•
Spiral wound gaskets are not suitable for the following
sizes and flange ratings:
•
1” (DN20 & DN25) – All flange ratings
•
1.5” (DN40) – 900-2500 ANSI and JIS 40k, 63k
•
2” (DN50) – 900-2500 ANSI and JIS 30k, 40k, 63k
•
3” (DN80) – JIS 30k, 40k, 63k
•
4” (DN100) – JIS 30k, 40k, 63k
•
If the rupture disc features a fluoropolymer liner, do not
remove this component.
NOTE:
Rupture disc specifications and year of manufacture
can be found on the rupture disc tag.
TABLE 1 - DISC/HOLDER MODEL COMPATIBILITY
Disc
Model
Holder Model
SRX
SRL/
SRLO
XL/
XLO
ATLAS/
ATLAS-LO
SRX
SRL
*
Axius
**
ATLAS
AGT
*1.5" SRL disc not compatible with 1.5” XL/XLO holder
**1.5" Axius disc not compatible with 1.5” SRL/SRLO holder
INSPECTION/PREPARATION
A. NEW RUPTURE DISCS
WARNING:
Always handle the rupture disc with extreme
caution. Nicks, dents, scratches or foreign material may result
in leakage or affect the burst pressure. Read the rupture disc
tag completely before installing to confirm that the size and
type are correct for your system.
1. Carefully remove the rupture disc from its packaging
container.
2. Inspect the rupture disc for damage. Look for dents,
scratches or dings in the seat area or dents in the dome of
the rupture disc (See Figure 1).
3. If foreign material is present, carefully clean the rupture
disc with a solvent that is compatible with your media.
Figure 1 - Check for Damage
NOTE:
Handle rupture disc holders with care. Damage to
the rupture disc holder could affect the performance of the
rupture disc. Do not install or use a rupture disc that has
been damaged!
B. NEW HOLDER
1. Carefully take the rupture disc holder apart by removing
the sideclips or capscrews and discard the white shipping
protector (See Figure 2).
2. Inspect the seat area for scratches, dents, nicks or dirt.
Flaws may adversely affect sealing and burst pressure.
3. If necessary, clean dust or dirt on the seat area with a
solvent that is compatible with your media.
Figure 2 - Insert Holder (Top) and Pre-torqueable Holder
C. EXISTING HOLDER
1. For insert style holders, carefully remove the rupture disc
assembly from piping.
2. Separate rupture disc holder components.
3. Remove old rupture disc.
4. Inspect the seat area of the rupture disc holder. Look for
scratches, nicks, corrosion or deposits left from the media.
