‘SC-1’ SSCSV 3-WAY
INTERFACE VALVE
MODEL 8200
OPERATION MANUAL
MANUAL # OMP - 8200 - 01 - 09
(SEE SPEC. SHEET 8200)
I. PRINCIPLE OF OPERATION
The Ruelco
‘SC-1’
is a high pressure 3-
way, Normally Closed Interface Valve
operated by a low pressure control
signal. Pilot pressure opens the valve
and allows flow from inlet to outlet. A
loss of pilot pressure actuates the piston,
first blocking the inlet and venting the
outlet pressure. In the second stage of
closing, the shut-off piston then blocks
the vent port from the outlet port. The
high Cv factor of the Interface valve
assures a fast response to a loss of pilot
control pressure. The soft seat design
assures extended life and repeatability.
The SC-1 also comes in an Override
model which allows the operator to
manually open and close the valve
without the use of pilot pressure.
II. INSTALLATION
The
‘SC-1’
can be mounted either
vertically, horizontally, or supported by
piping from any of its ports. If it is
supported by piping, care should be
taken that the strength of the pipe fittings
used is adequate to prevent the fitting
from breaking off in the valve body
should the valve be inadvertently struck.
Proper pipe thread sealant should be
used on any pipe fittings threaded into
the valve ports. If stainless steel fittings
are used, a sealant that will prevent
galling is required.
Every Interface face valve has a panel
mount spacer designed into the cap to
aid in panel mounting. The rotating ring
design of the override model allows the
operator to construct the pilot pressure
line in any direction.
III. DISASSEMBLY (REFER TO
SPEC. SHEET 8200)
All Control and Pilot Pressure should
be vented before Disassembly
•
Suitable adjustable wrench for
removing the cap.
•
Pick to remove the Sleeve
from the body.
•
Suitable adjustable wrench for
unthreading the bottom cap.
Note: All Item Numbers Refer to the
8200-10000 Model unless otherwise
Noted.
Spool Seals
1) To replace O-rings on the spool
assembly (Item 4), the cap must be
removed.
2)
Unthread the cap (Item 2).
3)
Pull the spool assembly (Item 4) out
of the Cap. Be careful not to lose the
spring.
4) The seals on the spool assembly may
now be replaced as per instructions
i
