|
Pipe
Installation |
| To
install pipe in valve ports, engage pipe one turn, apply pipe
thread sealant (tape not recommended), and tighten pipe. This
procedure will prevent sealant from entering and contaminating
the valve. |
|
Air
Lines |
| Air
Lines: Before installing a valve in an existing system, the air
lines must be blown clean of all contaminants which may be in
the system. It is recommended that an air filter be installed
in the inlet line close to the valve. |
|
Valve
Inlet |
| DO
NOT RESTRICT AIR SUPPLY. Any restriction of the air supply lines
(for example, sharp bends or clogged filter element) will reduce
the speed with which the outlet volume is pressurized, and can
also cause the valve to malfunction. |
|
Valve
Outlet(s) |
| For
faster pressurizing and exhausting of the outlet volume, locate
the valve as close as possible to the mechanism being operated.
Also, any restriction in the outlet lines (for example, sharp
bends or undersized lines) will reduce both pressurizing and exhausting
speeds. |
|
Valve
Exhaust(s) |
| DO
NOT RESTRICT EXHAUST OF POPPET VALVES as this can cause the valve
to malfunction. To reduce exhaust noise, use a silencer such as
the ROSS Muffl-Air®. |
|
Electric
Conduit Port |
| It
is important that the electrical supply be of the correct voltage
and Hertz. ROSS solenoids are rated for continuous duty at 85%
to 110% of the voltage shown on the solenoid coil. Multi-rated
solenoids (e.g., 110-120 volts) are rated for continuous duty
at 85% to 110% of the maximum voltage shown. A supply voltage
that does not fall within this range can lead to faulty valve
action or premature solenoid burnout. If electrical power is supplied
by a separate transformer, it must be capable of handling the
inrush current of the solenoids without significant voltage drop.
|
|
Operating
Pressures and Temperatures |
| Maximum
and minimum operating pressures and temperatures are specified
for each type of valve. Staying within these limits contributes
to longer valve life and proper operation. If you must exceed
these limits, consult ROSS for advice. |
|
Pilot
Pressure |
For
proper operation, pilot pressure must not fall below the minimum
specified for the valve. For poppet valves, pilot pressure must
be at least equal to the main supply pressure.
If
a solenoid piloted valve must operate at a pressure lower than
the minimum specified pilot pressure, an external pilot supply
of adequate pressure must be used. Some ROSS valves automatically
accept an external pilot supply, while others must be converted.
|
|
Vacuum
or Non-Air Service |
| Many
ROSS valves can be used for vacuum service or with fluids other
than air. Such applications require an external pilot supply.
For more information, consult ROSS. |
|
Conversion
to External Pilot Supply |
When
a valve is converted to external pilot supply, consult ROSS
for the converted valve's model number. This will allow records
and drawings to be changed and prevent errors when ordering
future replacements or repair parts.
INLINE
POPPET VALVES:
1. Remove pilot section from valve body.
2. Remove pipe plug from external pilot supply port and install
the pipe plug in the internal pilot supply passage.
3. Replace the pilot section.
SIZE
4, 10, 20 BASE-MOUNTED VALVES:
1. Remove valve from base.
2. Remove pipe plug from underside of valve body.
3. Install pipe plug in internal pilot supply passage.
4. Attach 1/8 pilot supply line to external pilot supply port
X in base.
5. Replace valve on base. |
