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1. Cannot be used as an emergency shutoff valve, etc. The valves presented in this catalog are not designed for safety applications such as an emergency shutoff valve. If the valves are used in this type of system, other reliable safety assurance measures should also be adopted. 2. Extended periods of continuous energization The solenoid coil will generate heat when continuously energized. Avoid using in a tightly shut container. Install it in a well-ventilated area. Furthermore, do not touch it while it is being energized or right after it is energized. 3. This solenoid valve cannot be used for explosion proof applications. 4. Maintenance space The installation should allow sufficient space for maintenance activities. 5. Pressure (including vacuum) holding It is not usable for an application such as holding the pressure (including vacuum) inside of a pressure vessel because air leakage is entailed in a valve. 6. When the conduit type is used as equivalent to an IP65 enclosure, install a wiring conduit, etc. 7. When an impact, such as steam hammer, etc., caused by the rapid pressure fluctuation is applied, the solenoid valve may be damaged. Give an attention to it. Design Warning 1. Confirm the specifications. Give careful consideration to the operating conditions such as the application, fluid and environment, and use within the operating ranges specified in this catalog. 2. Fluid 1. Type of fluid This product is applicable only for steam of 183°C/1 MPa or less. 2. Use an oil-free specification when any oily particle must not enter the passage. 3. Steam quality When using steam containing foreign matter, this may cause a trouble, such as malfunction or seal failure due to promoted wear of the valve seat or armature or foreign matter sticking to the sliding parts of the armature, etc. So, install an appropriate filter (strainer) immediately upstream from the valve. Generally, use an approx. 100-mesh filter even when it may vary depending on the operating environment. The water supplied to the boiler may include substances, such as calcium and magnesium that produce hard scale or sludge. Since this scale or sludge of the steam may cause the valve to malfunction, install water softening equipment to remove the mineral contents included in the supply water. Do not use steam that includes chemicals, synthetic oils containing organic solvents, salt contents, or corrosive gases, etc., as it may cause breakage or malfunction. 4. Boiler compound Since the special FKM used for this product improves the alkali-resistance when compared to the general FKM, it can be used for the steam, into which the boiler compound is charged. However, the resistance to other chemicals, such as organic solvent is the same as the general FKM. So, use this product after checking the resistance to the components included in the boiler compound. 5. Ambient environment Use within the operable ambient temperature range. Confirm the compatibility between the product’s composition materials and the ambient atmosphere. Be sure that the fluid used does not touch the external surface of the product. Warning Selection Series VXS Specific Product Precautions 2 Be sure to read before handling. Refer to front matter 41 for Safety Instructions and pages 17 to 19 for 2 Port Solenoid Valves for Fluid Control Precautions. 187 VX2 VXK VXD VXZ VXS VXE VXP VXR VXH VXF2 VX3 VXA