9
INSTALLATION (continued)
7.
Determine best method for connecting drip leg
(31)
to the “outlet to the vent pipe”
(8)
(see figure 2
on page 8). Again, the “outlet to vent pipe”
(8)
can be adjusted to point in any horizontal direction
by loosening the 3 valve body locking screws
(9)
and turning the valve body
(7)
(see first row of
Appendix “C” on page 16 for illustration). Run a ¼” line
(37)
from the Valve Body water drain
hole
(24)
to the Drip Leg
(31)
. (Don’t forget to re-tighten the 3 valve body locking screws
(9)
.)
( 10 ) Carbon fragment
collection trap chamber
( 26 ) Tension bar
( 29 ) Spring tension adjusting
mechanism and isolation
chamber upper part
( 17 ) Pin hole for spring locking
when servicing O-rings
( 15 ) 3/4" non-threaded Boss
( 18 ) Collection
chamber
flange
( 3 ) Collection chamber
flange O-Ring
( 4 ) Eight 1/4"
SS cover
screws
( 35 ) Alarm port
with plug
( 5 ) Collection trap
chamber cover
( 14 ) 1/8" NPT Tee
( 34 ) Filter/vent
( 22 )
Double
check
pressure
equalizing
valve
( 6 ) Carbon fragment
collection trap
canister insert
with tack compound
(replaceable)
( 21 )
Pressure
gauge
( 8 ) Outlet to vent pipe
( 23 ) Water drain hole in
isolation chamber
( 1 ) Valve seat O-ring
( 2 ) Valve body O-ring
( 32 ) Valve neck
( 25 ) Pull Ring
( 30 ) Spring
(39) Stem Seal
( 9 ) Three valve body
locking screws
at 120 degrees apart
(28) Isolation Chamber
lower part
( 13 ) 2" carbon fragment
collection trap inlet
( 7 ) Valve body
(24) Valve Body
water drain hole
( 16 ) Calibration locking
screws and seal
Figure 3
-
Cutaway View
Pressure Gauge and Auxiliary Alarm
The pressure gauge
(21)
between the rupture disk and the seating mechanism of the valve is used to
let the operator know if a rupture disk has burst or is seeping. A pressure or vacuum reading other
than “0” psig indicates a problem with the rupture disk. The double check pressure equalizing valve
(22)
is provided to prevent a pressure build-up between the
RuptureSeal
™ valve and the rupture
disk, usually resulting from a seeping rupture disk. This special double check pressure equalizing
valve allows low pressure build-up to bleed-off, but re-seals itself at high pressures or vacuum
. IF AN
ALARM IS DESIRED
to supplement the pressure gauge (
IT IS HIGHLY RECOMMENDED
) to signal
when the rupture disk has ruptured, it can be installed in the plugged alarm port
(35)
of Tee
(14)
.
The ALARM should be set to activate between 4 and 10 psig. Contact equipment servicing for
information on the optional
Redi Controls Alarm
™.
Supplemental Mounting Support
It is recommended that a supplemental mounting support be provided for the
RuptureSeal
™ valve to
relieve any stress it may put on the rupture disk assembly (see Figure 1 on page 8). A support
mounting coupling
(15)
has been provided for this purpose. The coupling will accommodate 3/4”
non-threaded pipe. The installer shall determine the best way to provide the supplemental support.