LV
Series
High Purity Chemical Liquid Valve
Precautions 1
Be sure to read this before handling the products.
Refer to the back cover for Safety Instructions.
1. Check the specifications.
Give careful consideration to operating conditions such as the
application, fluid and environment, and use within the operat
ing ranges specified in this catalog.
2. Fluids
Operate after confirming the compatibility of the product's com
ponent materials with fluids, using the check list on page
7
.
Please contact SMC regarding fluids other than those in the
check list. Operate within the indicated fluid temperature
range.
3. Maintenance space
Ensure the necessary space for maintenance and inspections.
4. Fluid pressure range
Keep the supplied fluid pressure within the operating pressure
range shown in the catalog.
5. Ambient environment
Install in an environment where there is no effect from radiant
heat caused by heat sources, etc., and use within the ambient
temperature range. After confirming the compatibility of the
product's component materi als with the ambient environment,
operate so that fluid does not adhere to the product's exterior
surfaces.
6. Liquid seals
When circulating fluid:
Provide a relief valve in the system so that fluid does not get
into the liquid seal circuit.
7. Countermeasures for static electricity
Since static electricity may be generated depending on the fluid
being used, implement suitable countermeasures.
Warning
1. If air leakage increases or equipment does not oper
ate properly, stop operation.
After mounting, perform suitable function and leak tests to con
firm that the mounting is correct.
2. Operation Manual
Mount and operate the product after reading the manual care
fully and understanding its contents. Also, keep the manual
where it can be referred to as necessary.
Mounting
Design / Selection
Warning
3
. Use pilot ports and sensor (breathing) ports as indi
cated below.
Caution
Piping
PA port
PB port
Sensor (breathing) port
N.C.
Pressure
Breathing
Breathing
N.O.
Breathing
Pressure
Breathing
Double acting Pressure
Pressure
Breathing
1. Preparation before piping
Before piping is connected, it should be thoroughly flushed out
with air or washed to remove chips, cutting oil and other debris
from inside the pipe.
Install piping so that it does not apply pulling, pressing, bend
ing or other forces on the valve body.
2. Use the tightening torques shown below for the pilot port.
Caution
Piping
Tightening Torque for Operating Port
Operating port
Torque [N·m]
M5
1/6 turn with a tightening tool after first tightening by hand
Rc, NPT1/8
0.8 to 1.0
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