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In adopting and using this product<br />
Our products are designed based on sufficient knowledge and long years of experience and are manufactured<br />
under strict quality control. However, we ask you to pay attention to the following points in adopting our products.<br />
1<br />
As use conditions of the products listed in this catalog are diversified, the decision of adaptability of the product to<br />
the system must be made by a hydraulic system designer or a person who determines the specifications upon<br />
conducting the analysis and tests as necessary. Besides, we ask you to study specifications with reference to the<br />
latest catalog and material, take the possibility of machine failures into consideration and configure the system.<br />
2<br />
3<br />
4<br />
5<br />
6<br />
In using the product, please observe safety precautions and use it in a correct use method.<br />
Technical information described in this catalog is representative values that explain features and performance of the<br />
product, not guaranteed values.<br />
If you use the product in the following conditions and environment, please contact us in advance.<br />
Conditions and environment other than specified specifications<br />
When the product is used for usage such as nuclear power, aviation, medical service and food<br />
Usage that is anticipated to have a large impact on persons and properties, especially usage for which safety is<br />
required<br />
The information described in this catalog may be changed without prior notice. Please contact us for the latest<br />
information.<br />
Precautions in use<br />
Hydraulic oil<br />
Mineral based hydraulic oil, water-glycol based, fatty ester based and phosphate ester based hydraulic oil may be<br />
used. However, when phosphate ester based hydraulic oil is used, seal material is special (fluoro rubber). Please<br />
specify by adding "-V" at the end of the type indication. When water-glycol based hydraulic oil and fatty ester based<br />
hydraulic oil are used, paint is special (epoxy resin). Please specify by adding "-W" at the end of the type indication<br />
for the painted products. When using water-glycol based hydraulic oil for a part of types of solenoid valves and<br />
valves with a solenoid valve, please specify by adding "-W1" at the end of the type indication. When water-glycol<br />
based hydraulic oil is used, rated pressure is 20.6 MPa (2<strong>10</strong> kgf/cm 2 ). Besides, when the product is used for a long<br />
time, sufficient properties control is required.<br />
When using other incombustible hydraulic oil and special hydraulic oil, please contact us.<br />
Viscosity and oil temperature<br />
Use hydraulic oil in the viscosity range of 2.8 to 380 mm 2 /s (cSt) and in the temperature range of -20 to +70<br />
(temperature range of 0 to 50 for water-glycol based hydraulic oil). If you use the product beyond this range,<br />
please contact us.<br />
Valve installation direction<br />
There is no limitation of the valve mounting surface. However, in the no spring type of the solenoid valve and<br />
solenoid controlled pilot operated directional valve, install the valve so that the spool is horizontal. In the no spring<br />
type of the check valve, install the valve so that the poppet is vertical.<br />
Mounting surface accuracy<br />
Finish the valve mounting surface to surface roughness of 6.3-Z and flatness of 0.01mm/□<strong>10</strong>0.<br />
Shipping condition<br />
The adjustment portion of each valve is shipped in the following condition as standard.<br />
Pressure control valve: Adjustment portion fully open (state of minimum pressure)<br />
Flow control valve: Adjustment portion fully closed<br />
In the type selection, we recommend the one indicated in color letters in the type indication explanation.<br />
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