Brochure

26
Piping
Caution
1. Refer to the Fittings & Tubing Precautions in the
Best Pneumatics No. 6 catalog for handling One-
touch fi ttings.
2. Preparation before piping
Before piping is connected, it should be thoroughly blown out
with air (fl ushing) or washed to remove chips, cutting oil and
other debris from inside the pipe.
3. Wrapping of sealant tape
When screwing together pipes and fi ttings, etc., be certain that
chips from the pipe threads and sealing material do not get in-
side the pipe. Also, when the sealant tape is used, leave ap-
prox. 1 thread ridge exposed at the end of the threads.
1. This product has a stopper for fully close in rotating
direction. Excess torque may break the stopper.
Table below shows the maximum allowable torque
of the handle.
Body size Maximum allowable torque (N·m)
M5 0.05
1/8 0.07
1/4 0.16
3/8 0.2
1/2 0.4
When performing the piping work, turn the tightening tool in
the horizontal direction to the hexagon across flats of the body
B so that any moment is not applied to the body A. If the tool is
in contact with the body A, this may cause the body B to come
off.
Carefully perform the piping
work so that the tool is not in
contact with the body A.
Body ABody B
2. Actuator speed needs to be checked each time the
setting is changed.
Individual product difference due to tolerance of the compo-
nents, individual actuator difference, operating conditions and
temperature, etc. may cause a large variation in the actuator
speed, and for this reason, the fi nal actuator speed needs to
be checked every time the setting is changed.
3. Force for lifting the handle is specifi ed as shown in
the table below.
Larger lifting force than specifi ed in the table below will cause
removal of the handle, fl ow rate not according to the fl ow-rate
characteristics curve, incorrect fl ow indication with the indica-
tor or damage to the product.
Port size Handle lifting force
M5
10-32/UNF
1 to 1.5 N
1/8, 1/4, 3/8, 1/2 3.5 to 4 N
4. Do not rotate the product by the indicator part.
Use a wrench for mounting the product.
Otherwise, it may cause damage to the product.
Caution
1. If the fitting is tightened with excessive torque, a
large amount of sealant will seep out. Remove the
excess sealant.
2. Insufficient tightening may loosen the threads, or
cause air leakage.
3. Reuse
1) Normally, fi ttings with a sealant can be reused 2 to 3 times.
2) To prevent air leakage through the sealant, remove any loose
sealant stuck to the fitting by blowing air over the threaded
portion.
3) If the sealant no longer provides effective sealing, wrap
sealing tape over the sealant before reusing. Do not use the
sealant in any form other than a tape type.
4. Once the fi tting has been tightened, backing it out to
its original position often causes the sealant to be-
come defective. Air leakage will occur.
5. Use R external threads with Rc internal threads and
NPT external threads with NPT internal threads.
Piping Threads with Sealant
Caution
Mounting
Series AS-FS
Specifi c Product Precautions 4
Be sure to read this before handling. Refer to the back cover for Safety Instructions.
For Flow Control Equipment Precautions, refer to “Handling Precautions for SMC
Products” and the Operation Manual on SMC website, http://www.smcworld.com
Winding
direction
Sealant tape
Expose approx.
1 thread