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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5. Check to make sure the gasket faces of the assembly are
flat by placing a straight edge across the face. If faces are
not flat, holder is not suitable for use (See Figure 3).
Figure 3 - Measuring for Flatness
6.
If necessary, clean the seat area with a solvent that is
compatible with your media. If this does not remove dirt,
hand polish the seat area with Scotch Brite fine emery
cloth or #0000 steel wool. DO NOT MACHINE THE
RUPTURE DISC HOLDER! If scratches, nicks, corrosion,
or deposits cannot be removed by hand, contact the
factory.
ASSEMBLY
WARNING
: Before attempting to assemble the rupture disc
and rupture disc holder, confirm that the seat area of the
rupture disc is designed to fit the rupture disc holder.
1. Place holder component with female seat on a work
surface (See Figures 4, 5, & 6).
Figure 4 - Insert Holder
2. If the holder was supplied with an optional o-ring groove,
install an o-ring into the groove of the component with the
female seat. Note: Use of an o-ring is for improved sealing
and is not required for proper function of the rupture disc
assembly. Do not install an o-ring unless the holder is
designed to accept these components by Fike!
3. Place rupture disc into holder component with female seat
with flow arrow on tag pointing in the same direction as
holder component with female seat flow arrow.
DiscLoc
TM
tab, if present, must seat properly in recess.
4. If the holder was supplied with an optional o-ring groove,
install an o-ring into the groove of the component with the
male seat. Note: Use of an o-ring is for improved sealing
and is not required for proper function of the rupture disc
assembly. Do not install an o-ring unless the holder is
designed to accept these components by Fike!
5.
Carefully align and place holder component with male seat
onto rupture disc with flow arrow in the same direction as
disc and holder component with female seat flow arrows.
CAUTION:
Be careful to not allow the male seat
component to strike or damage the dome of the rupture
disc!
Figure 5 – Alignment pin fitting in tag slot. (ATLAS sizes
14” and larger”)
WARNING:
For ATLAS sizes 14” and larger, ensure that
the alignment pin in the holddown fits into the tag slot of
base (see Figure 5) and check the gap (see Figure 7).
Fragmentation or leaking can occur if this feature is not
aligned properly.
6. Rotate component with male seat to align sideclip holes.
7. If holder configuration is Insert, install sideclips and tighten
securely.
8. If holder configuration is TQ, turn assembly over to access
capscrew holes (depending on design).
Note:
It may be beneficial to move/tilt or support the
holder to first install a few capscrews evenly around the
perimeter before turning the assembly over.
9. If holder configuration is TQ or TQ+, lubricate uncoated
capscrews with a light oil such as SAE grade 20. Lubricate
both the threads and the underside of the head. Install
lubricated capscrews and tighten until recessed and snug
in the holder (see Figure 6).
