Nor-Cal Angle Valves - Manual (Page 2)

OPERATOR'S MANUAL
© Nor-Cal Products, Inc., POPV-LIT 6/08
Nor-Cal Products, Inc. • 1967 S. Oregon St., Yreka, CA 96097 • 800-824-4166 or 530-842-4457 • FAX 530-842-9130 • [email protected] • Web: www.n-c.com
Air-to-Open Spring-to-Close Pneumatic Angle Valves
Recommended Service Intervals
Service intervals are based on the number of cycles (open-
close-open) a valve can be safely operated under clean
conditions without any maintenance. Nor-Cal recommends
that these valves be inspected for wear, and O-rings and
bellows be replaced as necessary after 250,000 cycles.
Process induced contamination and bake-out tempera-
tures above 150ºC may shorten service intervals signifi-
cantly. After service is completed these valves can again be
operated for the specified number of cycles.
Operating Instructions
To ensure trouble free use, keep the valve clean and free
from contaminants. The air supply pressure should not ex-
ceed 80 psig. The bakeout temperature of the valve should
not exceed that of the elastomer that is used in it. See table
below for maximum recommended bakeout temperatures.
Pneumatic Hook-up
Air-to-open, spring-to-close, pneumatic valves are to be
used with 3-way air solenoid valves. The air solenoid can be
purchased separately as a kit with installation instructions
and hardware. As an option, Nor-Cal can provide a pneu-
matic valve with the appropriate air solenoid in various
voltages pre-installed. Or, the valve may be connected
by an air line to an air solenoid in a remote location. The
instructions below are for the hook-up of a valve with a
pre-installed air solenoid. If the valve is connected to a
remote air solenoid, simply connect the air line from the
OUT port of the air solenoid to the 1/8 inch NPT hole on the
black valve centerplate using an appropriate fitting.
1. Connect a 60-80 psig air supply to the IN port
of the air solenoid using Teflon tape on all fittings to
ensure a leak-tight connection. For continued trouble
free operation, it is recommended that an air filter and
lubricator be used in the air line system.
2. Check the air solenoid name plate to confirm its
electrical specifications. Attach the appropriate
power source to the air solenoid.
3. Energizing the air solenoid will cause the valve
to open, de-energizing the air solenoid will cause
the valve to close.
Viton ® and Kalrez ® are registered trademarks of DuPont Dow Elastomers.
Lubriplate ® is a registered tracemark of Fiske Brothers Refining Company.
Unpacking
Inspect the shipping box before unpacking. Any damage
should be reported to the transportation company upon
receipt. Remove the valve from the box. Visually inspect the
valve, making sure that the flange faces are in good
condition. Apply 40-80 psig at the
1 / 8 inch NPT tapped hole
located on the black center plate of the valve to make sure the
valve operates smoothly before installation.
Installation Instructions
Determine that the valve and adjacent plumbing in the
vacuum system will be adequately supported when
installed. Make sure that the mating flanges are inline,
parallel and the correct distance apart to minimize straining
of the valve body. Remove the flange covers and wipe the
flanges and the gasket with a lint free wipe. With O-ring seal
flanges, apply a light film of vacuum grease to the O-ring
prior to installing in the flange groove. Proceed with the
installation while making sure that no foreign particles
enter the valve. Where applicable, lightly grease the flange
bolts with a high temperature anti-seize compound.
Carefully tighten around the flange in a 180º alternating
pattern until the flanges are in contact and the bolts are snug.
Valves will work equally well in any orientation. In addition,
vacuum can be on either side of the poppet and still maintain
a vacuum tight seal. However, it is recommended that valves
are installed with the poppet facing the process to prevent
contaminating the valve internals.
CAUTION: The air actuator sold under this agreement is spring
loaded. Any unauthorized disassembly of the air cylinder assem-
bly will void the warranty, and any improper disassembly and main-
tenance is potentially dangerous. Do not dismantle the valve until
you shut off the air supply to the air solenoid and disconnect the
air supply line that is connected to the valve’s center plate (4).
Refer to the illustration and recommended service intervals
sections before installing a repair kit. Please contact Nor-Cal
to check on the warranty status prior to proceeding.
Closed
Manual
100 º C
150 º C
Valve Position
Pneumatic
120 º C
220 º C
150 º C
280 º C
Viton ® O-rings
Kalrez ® O-rings
Open
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