<br>Note 1) The vacuum source for the VHK2 is piped to the 2 (A) side. <br>Note 2) Valve leakage is allowed for the VHK series.
<br>Furthermore, VHK□R series flame-resistant type valves are still available. The VHK series catalog can be found here.
<br>In such cases, the valves can be purchased as single units.<br>If the manifold base is of the special wiring specification “-K,” it is necessary to check whether the blanking plate position is single wiring or double wiring. Check the manifold specifications sheet of the SQ valve in use.
<br>One of the benefits of using 3-port valves is that they take up half the number of stations.<br>Common applications include the control of single acting air operated valves and the driving of single acting air cylinders.
<br>Note) For the single type, pressing the direct manual override switches the valve, and releasing it returns the valve to its origin position.
<br>Note 1) There is no external pilot type VFS1000 or VFR6000 series valve.<br>Note 2) Although there is an external pilot type VFR4000/5000 series 3-position valve, it cannot be used in this way because the P port needs to be pressurized.
<br>When replacing an old VQZ series valve for maintenance, order a new VQZ series valve with a plug connector with a lead wire and wire the lead wire (there is no polarity even in for DC).
<br>Since more than 40 years have elapsed since production began, and they are scheduled to be discontinued, they are no longer listed in the web catalog.<br>If replacing a valve, we recommend switching to one of SMC’s current products from the SY or VFR series in consideration of future availability.
<br>If a substitute is selected based on the flow characteristics and port size, an SY7000 or VF3000 series valve will be suggested, but they differ in specifications and dimensions.<br>Select a model and part number according to the operating conditions. (e.g., For the VP4125-021G-X52: SY7120-1G-02, VF3130-1G1-02, VF3130K-1G1-02, etc.)
<br>Refer to the web catalog for the full part numbers to order a new VM series valve. (The VM/VZM/VFM series catalog can be found here.)<br>Note) There are also old valves with only “VM15” and “VM25” indicated on the product label. Refer to the new VM series catalog for the full part numbers.
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<br>For details, refer to the "Min. allowable stroke length for auto switch mounting" in the catalog.<br>About the horizontal lines in the stroke table
<br>Note 1) For CDU/CDUK single acting spring extend type cylinders, the body dimensions of bore sizes ø20 and larger will extend beyond the standard dimensions.<br>Note 2) For CDUJ series cylinders, the body dimensions of bore sizes ø6 and larger will extend beyond the standard dimensions. The CU series catalog can be found here.
<br><br>The current part number for the old CDQ2B32-30D is “CDQ2B32-30DZ.” For this product, the auto switch mounting rail on the body has been changed to a round auto switch mounting groove. Cylinder body mounting is possible. A mounting bracket may be required if the auto switch in use is to be used as is. Check the auto switch model first.