Datasheet

Winding
direction
Pipe tape
Expose approx. 2 threads
Mounting
Warning
6. Avoid sources of vibration, or adjust the arm from
the body to the minimum length so that resonance
will not occur.
7. Painting and coating
Warnings or specifications printed or labelled on the product
should not be erased, removed or covered up.
Piping
Warning
Caution
1. During use, deterioration of the tube or damage to
the fittings could cause tubes to come loose from
their fittings and thrash about.
To prevent uncontrolled tube movement, install protective
covers or fasten tubes securely in place.
2. For piping the tube, fix the product securely using the
mounting holes so that the product is not in the air.
Piping
Caution
6. If a regulator and valve are connected directly, they
may vibrate together and cause chattering. Do not
connect directly.
7. If the cross-sectional area of piping for the fluid
supply side is restricted, operation will become
unstable due to inadequate pressure differential
during valve operation. Use piping size for the fluid
supply side that is suited to the port size.
1. Preparation before piping
Before piping is connected, it should be thoroughly blown out
with air (flushing) or washed to remove chips, cutting oil and
other debris from inside the pipe. Avoid pulling, compressing,
or bending the valve body when piping.
2. Avoid connecting ground lines to piping, as this
may cause electric corrosion of the system.
3.
Always tighten threads with the proper tightening torque.
When attaching fittings to valves, tighten with the proper
tightening torque shown below.
Lower tightening torque will lead into fluid leakage.
4. Connection of piping to products
When connecting piping to a product, avoid mistakes
regarding the supply port etc.
5. Wrapping of pipe tape
When connecting pipes, fittings,
etc., be sure that chips from the
pipe threads and sealing material
do not enter the valve.
Furthermore, when pipe tape is
used, leave 1.5 to 2 thread ridges
exposed at the end of the threads.
Tightening Torque for Piping
Recommended
Unacceptable
Fig. 2 Binding tubes with bands
Straight portion
Mounting
pitch
A
Straight portion
Fig. 1 Recommended piping configuration
Recommended Piping Conditions
1. When connecting tubes using One-touch fittings,
provide some spare tube length shown in Fig. 1,
recommended piping configuration.
Also, do not apply external force to the fittings when binding
tubes with bands etc. (see Fig. 2.)
Tubing
size
Mounting pitch
A
Unit: mm
Nylon tubing Soft nylon tubing Polyurethane tubing
44 or more
84 or more
89 or more
112 or more
140 or more
168 or more
29 or more
39 or more
56 or more
58 or more
70 or more
82 or more
25 or more
39 or more
57 or more
52 or more
69 or more
88 or more
Straight portion
length
ø1/8"
ø6
ø1/4"
ø8
ø10
ø12
16 or more
30 or more
32 or more
40 or more
50 or more
60 or more
Connection threads
Rc1/8
Rc1/4
Rc3/8
Rc1/2
Rc3/4
Rc1
3 to 5
8 to 12
15 to 20
20 to 25
36 to 38
Proper tightening torque N·m
Series VXZ
Specific Product Precautions 3
Be sure to read before handling. Refer to back cover for Safety Instructions, “Handling
Precautions for SMC Products” (M-E03-3) and the Operation Manual for 2 Port Solenoid Valves
for Fluid Control Precautions. Please download it via our website, http://www.smcworld.com
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