|
Precautions
|
Automatic Valve products should only
be installed by trained and qualified personnel who have
knowledge of how specific pneumatic products are to be
piped and electrically connected.
Install Automatic Valve products only in systems which contain adequate safeguards
to prevent injury or damage in the event of product failure.
Insure that the system has provisions for turning air and electrical power off
and for exhausting all air trapped within the system. |
|
Operating
Media |
Automatic Valve products are
designed primarily for use with air or other inert
gases. For use with other media, contact your Automatic
Valve distributor.
When solenoid piloted valves are used for vacuum service, an external pilot supply
must be used. |
| Air Lines |
Before installing any pneumatic product,
air lines must be blown clean to remove all contamination.
Clean air line filters after purging is completed.
Caution
Compressed air streams
are dangerous. Divert the stream away from personnel and
equipment. Personnel in the area must wear suitable eye and
ear protection. |
|
Pipe
And Fitting Preparation
|
Pipe sealant or tape should be applied
behind the first two or three threads to prevent the
sealant from entering and contaminating the system.
|
|
Mounting
|
Spool valves must be mounted with
the spool in a horizontal position. Other valves, cylinders,
and accessories my be mounted in any position.
Where practical, mount valves so that they are accessible for service and so
that solenoid manual overrides can be used. |
|
Valve Inlet Lines
|
Valve inlet lines should have
an inside diameter equal to or greater than the valves’ inlet
port size as shown in the following chart:
Restricted inlet lines will
reduce the system operating speed and can cause valve malfunction.
Eliminate or minimize sharp bends and install regulators
as close as possible to the valve inlet port. |
|
Valve Outlet Lines
|
| For optimum system performance, locate
valves as close as possible to the device they are operating.
Minimize all sharp bends and other restrictions. |
Valve Exhaust Port
|
Spool valve exhaust ports may be restricted
to provide speed control for cylinders or other devices.
Poppet valve exhaust ports must not be restricted. Such restriction can cause
valve malfunction.
All open valve exhaust ports should have mufflers installed to reduce noise levels
and to prevent the entry of atmospheric contaminations. |
Filtration
|
Filters with 50 micron elements are
adequate for all Automatic Valve products. However, where
devices not made by Automatic Valve are used in the system,
the manufacturer should be consulted regarding their
filtration requirements.
Install filters within 20 feet of the valve or per the manufacturer’s instructions. |
Operating Pressures And Temperatures
|
Minimum and maximum operating pressures
and temperatures for Automatic Valve products are specified
in each catalog section. While products may function
at lower or higher limits, such operation is unsafe and
must be avoided.
Contact your Automatic Valve distributor if your application requires products
that exceed the operating limits shown in this catalog. |
Oil Pressure
|
For proper operation, pilot pressure
must be within the minimum and maximum operating pressures
shown in each catalog section.
If solenoid piloted valves are to operate at lower or higher operating pressures
than the specified pilot pressure limits, an external pilot supply within the
proper pressure range must be used. Valves may either be ordered with an external
pilot supply, option “B”, or may be field converted as shown in each catalog
section. |
|
Lubrication
|
Lubrication of Automatic Valve products
is not required but is recommended to maximize service
life. Where devices not made by Automatic Valve are used
in the system, the manufacturer should be consulted regarding
their lubrication requirements.
Lubricators should be installed downstream of regulators, per the manufacturer’s
instructions.
Oils used in air line lubricatiors should be compatible with seals used in the
system. Generally, Automatic Valve products use Buna “N” seals. Fluoroelastomer
seals are available as option “A”. Oils should be parafinic, petroleum based
with oxidation inhibitors, an ISO 32 or lighter viscosity, and an aniline point
between 82 o C (180 o F) and 99 o C (210 o F).
In general, lubricators should not be synthetic or reconstituted, and should
not have alcohol content or detergent additives. |
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PROFILE