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Design
Warning
1. Provide ventilation when using a valve in a confined area, such as in a closed control
panel. For example, install a ventilation opening etc. in order to prevent pressure from
increasing inside of the confined area and to release the heat generated by the valve.
2. Polyacetal resin parts are used for the exterior.
Organic solvents including thinner, acetone,
alcohol and ethylene chloride; chemicals including sulphuric acid, nitric acid and hydrochloric
acid; cutting oil, synthetic oils, ester-based compressor oil, alkali, kerosene, gasoline, lock
material of screw are harmful. Do not use the product where these are present.
3. Consult SMC if no leakage is allowed due to the environment, or if the operating fluid is not
air.
4.
Shield from ultra violet light and radiation with protective cover.
5.
A safety device needs to be installed if output pressure is exceeding the set pressure, otherwise
this can cause breakage of outlet device and equipment or lead to malfunction.
Selection
Warning
1. The products presented in this catalog are designed only for use in compressed air
systems. Do not operate at pressures, temperatures, etc., beyond the range of the
specifications, as this can cause damage or malfunction. (Refer to the specifications.)
Please contact SMC is using for other fluids than compressed air.
2.
Grease used on the internal sliding parts and seals may flow to the outlet side. If this is not
acceptable, please consult SMC.
3. Long absence of operation or operation with sealed circuit or balancing circuit on the outlet
side may cause set pressure fluctuation. Please consult SMC if this is not acceptable.
4.
Set range of outlet pressure shall be 85% or less of the inlet pressure. Operating at a setting
exceeding 85% causes the outlet pressure to be easily affected by fluctuations in flow rate and
inlet pressure, leading to instability.
5.
Since the safety margin is calculated to the maximum value of the set pressure range shown in
the specification table, the pressure setting may be over the maximum value. However, use the
product within the specified range.
6.
If the product is used with circuit which requires high exhaust sensitivity or set precision, please
consult SMC.
Caution
1. Particularly when using a C-R element (surge voltage suppressor) to protect the
switching element, take note that leakage current will flow through the C-R element, thus
increasing leakage voltage
AC coil is 8% or less of the rated voltage.
DC coil is 3% or less of the rated voltage.
2. Although the valve can be operated at temperature as low as 0
o
C, measure should be
taken 0
o
C to avoid solidifying or freezing drainage and moisture, etc.
