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! Warning
.
1. Before piping is connected, the pipes should be thoroughly blown through with air (flushing) or
washed to remove chips, cutting oil and other debris from inside. Should they remain, they could
cause malfunction.
2. When connecting pipes and fittings, etc., ensure that neither chips from the pipe threads nor
sealing material get inside the valve. When using sealant tape, leave 1.5 to 2 thread ridges exposed
at the end of the pipe/fitting.
3. When screwing a piping component into the valve, secure the female threaded side and apply the
recommended tightening torque. Under tightening may result in loosening or sealing failure while
over tightening may cause damage to threads and other problems.
Recommended tightening torque Unit
Connection
thread
Torque
! Warning
1. Use clean air. Do not use compressed air which contains chemicals, synthetic oils containing
organic solvents, salts or corrosive gases, etc., as this can cause damage or malfunction.
2. Install an air dryer or after cooler on the upstream side of the pressure release 3 port valve
because air containing excessive drainage may cause malfunction.
! Caution
1. Install an air filter of 5 µm filtration on the inlet side.
2. Install a mist separator on the inlet side to remove carbon powder from the compressor or other
equipment. An excessive amount of carbon dust ingress via the inlet may cause the valve to
malfunction.
Refer to SMC's "Air Cleaning Equipment" catalog for further details on compressed air quality.
! Warning
Do not use valves where there is direct contact with, or in atmospheres of, corrosive gases,
①
chemicals, salt water, water or steam.
Do not use in an explosive atmosphere.
②
Do not use in locations subject to vibration or impact.
③
Confirm the specifications for each series.
A protective cover should be used to shield valves from direct sunlight.
④
Shield valves from radiated heat generated by nearby heat sources.
⑤
Employ suitable protective measures in locations where there is contact with water droplets,
⑥
oil, or welding spatter.
Piping
：
１ ／ ８
１ ／ ４
３ ／ ８
7
9
12
1 4
22
～
～
Air Supply
Operating Environment
- 7 -
N
・ ｍ
１ ／ ２
３ ／ ４
2 4
28
3 0
28
～
～
～
１
3 0
36
3 8
～
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