Preparation before installation
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Pipeline Cleaning
Before installation, all foreign materials such as dust, metal shavings, and sealing tape inside the pipe must be thoroughly removed.
When used in steam systems, please perform a pipe cleaning operation first, ensuring to use high-pressure steam to clean out debris inside the pipe.
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Caution for Sealing Tape Usage
If sealing tape is used on the connecting pipe, please ensure that the first two threads at the front end of the pipe are not wrapped with sealing tape to prevent foreign materials from falling off.
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Medium Viscosity Limitations
This solenoid valve should not be used with media that have high viscosity.
Installation Accessory Recommendations
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Filter Installation
To ensure the long-term normal operation of the solenoid valve, a Y-type filter with a mesh size of 100-120 must be installed before the solenoid valve.
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Steam Accessories
A steam trap must be added to the steam piping, and the drainage function should be regularly checked to ensure it is working properly, in order to prevent water hammer from affecting the solenoid valve's operation.
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Bypass Loop Installation
It is recommended to add a bypass line for easier maintenance or replacement of the solenoid valve in the future.
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Pressure Gauge Installation
Install a pressure gauge at the inlet and outlet to facilitate monitoring of pressure differentials and troubleshooting of system anomalies.
Installation Location and Method
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Pressure Differential Conditions
The minimum operating pressure differential for the pilot-operated solenoid valve must be above 0.3 kg (Pin > Pout).
If Pin < Pout, the solenoid valve will not operate properly.
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Avoid Installation at the Bottom of the Tank
The solenoid valve should not be installed at the bottom of the tank; it must be installed at least 40 cm above the sediment in the tank.
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Installation Direction
It is recommended to install the solenoid valve parallel (with the coil facing up and perpendicular to the ground) for optimal efficiency.
Special Application Precautions
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Limitations for Chilled Water Circulation
If used for chilled water circulation and backflow occurs in a normally closed (NC) state (Pout > Pin), solenoid valves should not be used; it is recommended to switch to electric valves.
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Water/Warm Water Systems
If the system has issues such as scale buildup or poor water quality, it is recommended to regularly check for blockages inside the solenoid valve and install descaling equipment if necessary.
Maintenance and Disassembly Precautions
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Coil Disassembly
After disassembling or rotating the coil, be sure to tighten the fixing screws to avoid noise or damage to the coil.
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Cleaning Internal Parts
When disassembling and cleaning internal parts, pay special attention to ensure that no parts are lost or deformed, as this may affect normal operation.
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Regular Maintenance
A maintenance cycle should be scheduled every 6 to 12 months to check the coil resistance, whether the valve body is stuck, and if the filter is clogged or needs cleaning.
Electrical Specifications and Usage Limitations
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Voltage
Please refer to the coil voltage specifications in the catalog; the operating voltage must be within ±10%.
Common specifications: AC110V, AC220V, DC24V, DC12V; other voltages need to be customized.
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Wiring Protection
When wiring, please ensure the use of waterproof connectors (especially in outdoor environments) and ensure that the wires and connections are secure to avoid electric leakage or short circuits.
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Power-On Time Limit
The coil power-on time must not exceed 30 minutes to avoid temperature rise that could damage the coil's lifespan. It is recommended to use a timer controller.
Pressure and Flow Conditions
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Operating Pressure Range
Please do not exceed or fall below the allowable pressure range indicated on the product during use.
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Pressure Differential Limit
Pilot-operated solenoid valve
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P1 > P2: Can be used normally
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P1 < P2: Prohibited from use
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Flow Limit
The Pilot-operated solenoid valve must have a minimum operating flow limit to function properly.
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Fluid direction
During installation, the fluid direction indicated on the valve body must be followed; reverse installation may result in failure to open or damage to the valve body.
How to Install a Solenoid Valve
To ensure the solenoid valve operates stably and efficiently over the long term, the installation process must follow certain fundamental principles and precautions.