Brochure

Warning
Operating Environment
1. Do not use the valves in an atmospheres
having corrosive gases, chemicals, salt
water, water, steam, or where there is direct
contact with any of these.
2. Do not use in explosive atmospheres.
3. Do not use in locations subject to vibration
or impact.
4. Do not use in locations where radiated heat
will be received from nearby heat sources.
5. Employ suitable protective measures in
locations where there is contact with water
droplets, oil or welding spatter, etc.
Caution
Lubrication
1. This solenoid valve can be operated without
lubrication.
If a lubricant is used in the system, use turbine oil Class 1, ISO
VG32 (with no additives).
In order to select the proper lubricant, refer to the table below
[Brand names of Class 1 turbine oils (With no additives)
compliant with ISO VG32].
Warning
Maintenance
1. Removing the product
1. Shut the fluid supply off and release the fluid pressure
in the system.
2. Shut the power supply off.
3. Dismount the product.
2. Low frequency operation
Switch valves at least once every 30 days to prevent
malfunction. Also, in order to use it under the optimum state,
conduct a regular inspection every 6 months.
3. Do not disassemble the product. Products
which have been disassembled cannot be
guaranteed.
If disassembly is necessary, please contact SMC.
Caution
1. Filters and strainers
1. Be careful regarding clogging of filters and strainers.
2. Replace filter elements after one year of use, or earlier
if the pressure drop reaches 0.1 MPa.
3. Clean strainers when the pressure drop reaches 0.1
MPa.
2.
Exhaust the drain from an air filter periodically.
Class 1 Turbine Oil (with no additive), ISO VG32
Classification of
viscosity (cst)
(40°C)
Viscosity
according to
ISO Grade
32
Idemitsu Kosan Co.,Ltd.
Nippon Oil Corp.
Cosmo Oil Co.,Ltd.
Japan Energy Corp.
Kygnus Oil Co.
Kyushu Oil Co.
Nippon Oil Corp.
Showa Shell Sekiyu K.K.
Tonen General Sekiyu K.K.
Fuji Kosan Co.,Ltd.
Turbine oil P-32
Turbine oil 32
Cosmo turbine 32
Kyodo turbine 32
Turbine oil 32
Stork turbine 32
Mitsubishi turbine 32
Turbine 32
General R turbine 32
Fucoal turbine 32
Please contact SMC regarding Class 2 turbine oil (with additives), ISO
VG32.
2/3 Port Process Valves
Precautions
3
Be sure to read this before handling.
For detailed precautions on every series, refer to main text.
Series PVQ
Specific Product Precautions
Be sure to read this before handling.
Caution
Power Source Selection
This product makes proportional control pos-
sible with constant current.
If controlled with voltage, the output flow rate cannot be kept
constant due to current fluctuation. Use a stable DC power sour-
ce with sufficient capacity without much ripple.
Caution
Handling
1. This product is adjusted to the respective
specifications at the SMC factory before de-
livery.
Do not disassemble the product or remove parts as it could
cause breakdown of the product.
2. Flow rate is controlled by balancing the val-
ve body.
Do not expose the product to external vibration and impact as
they change the flow rate.
Caution
Pressure Difference
Leakage from the valve may be caused if the
pressure difference is larger than the maxi-
mum operating pressure differential of the res-
pective models.
Caution
Operation in Vacuum
When the product is used in vacuum, apply va-
cuum pressure to A (2) port.
Pressure at P(1) port should be larger than the pressure at A(2)
port.
Caution
Valve Mounting
When mounting a valve to the sub-plate, tigh-
ten the screw securely with the tightening tor-
que shown in the table below after checking
the installation condition of the O-ring on the
interface side.
Warning
Continuous Energisation
Do not touch the valve directly. The coil can
be hot depending on the ambient temperature
or energising time.
Install a protective cover over the valve if it can be touched
directly.
PVQ10 (Base mounted)
0.15 to 0.22
PVQ30 (Base mounted)
0.8 to 1.0
Proper Tightening Torque (N m)
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