1. Product Specific Precautions 1
Common Precautions 1 Be sure to read before handling.
Design
Warning
●All models
1.The body material is A 6063,the bellows is SUS316L, and other metal seal material is SUS304.
The sealing material of the vacuum part is FKM as st andard , but this can be changed to other
materials (re fer to “Ho w to Ord e r”). Confirm whether the fluid to be used is compa tible w ith the
materials before use.
●With heater (thermister)
1.When using a model with a heater, a mechanism to prevent overheating should be
installed.
Selection
●High temperat ure type
1. If using gases that cause a large amount of deposits, hea t the valve body to prevent deposit s in
the valve.
Mounting
● All models
1. In high humidity environments, keep the valve packed until the time of installation.
2. Perform piping so that excessive force is not applied to the flange sections. When there is
vibration from heavy objects or attachments, etc., fix piping so that vibration will not apply
torque directly to the flange section.
3. Vibration resistance allows for normal operation of up to 30m/s
2
(45 to 250Hz).
Be advised that continuous vibration may cause a decline in durability.
Arrange piping to avoid excessive vibration or impacts.
●High temperature type (temperature specification /H4 H5)
1. In models with a heater (thermistor), take care not to damage the insulation components of the
lead wires and connector section.
2. The set temperature for models wi th a heater sho uld be establ ished without any draft s or hea t
insulation. It will change depending on conditions such as heat insulation measures and the
heating of other piping. Fine adjustment is not possible.
3. When installing heater accessories or mounting a heater, check insulation resistance at the
actual operating temperature. A current leakage breaker or fuse should be installed.
4. When a valve is to be heated, only the body section should be heated, excluding the handle
section.
5. In models with a heater, when the heater is in operation, the entire valve becomes hot. Be
careful not to touch it with bare hands, as burns will result.
6. The heater temperature will initially decrease several % after the heating starts and then
gradually becomes stable. (The heater temperature may decrease approximately 5 to 10%
due to individual differences.)