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Pertanyaan umum tentang ELV dari 3G Electric.
What voltage options are available for ELV solenoid valves?
ELV solenoid valves are available with coil voltages of 12V AC, 24V DC, 48V AC, 110V AC, and 230V AC. The specific voltage options depend on the valve model; for example, the ELV25008 stainless steel valve operates at 230V or 24V, while the ELV10006 indirect-acting valve supports 24V DC (13 W) and 220V AC (22 VA). This range accommodates different electrical installations, from low-voltage control circuits to standard mains supplies. When selecting a valve, verify the coil voltage against your control system to ensure compatibility. Replacement coils are also available separately, allowing voltage changes without replacing the entire valve body.
What is the maximum pressure rating for ELV solenoid valves?
ELV solenoid valves are rated to a maximum pressure of 16 bar for most direct-acting models, such as the ELV25006 and ELV25008, and up to 17 bar for indirect-acting models like the ELV10006. The working pressure range varies by model and media: for air and water, the operating range is typically 0-10 bar, while for oil it is 0-5 bar. Always check the specific datasheet for the valve model to confirm the pressure limits for your application. Exceeding the rated pressure can damage the valve or compromise safety.
Which fluids are compatible with ELV solenoid valves?
ELV solenoid valves are designed for use with air, water, oil, and fuel oil, provided the fluid viscosity is below 20 CST. For example, the ELV25008 handles air, water, and fuel oil, while the ELV25012 is rated for air, water, and oil. The valve body material—stainless steel or plastic—affects chemical compatibility; stainless steel is suitable for more aggressive media, while plastic is lighter and cost-effective for standard fluids. Always verify that the seal material (e.g., NBR) is compatible with your specific fluid to avoid degradation.
Can I replace the coil on an ELV solenoid valve without changing the valve body?
Yes, ELV solenoid valves are designed with a modular cavity that allows different coil types to be mounted on the same valve body. For instance, the ELV81532 coil is a 12V DC replacement for valves in the 45xxx and 50xxx series. This means you can change the operating voltage by swapping the coil, without mechanical redesign. This feature is useful when plant control systems are upgraded or when a valve needs to be adapted to a different electrical supply. Ensure the replacement coil matches the valve series and voltage requirements.
What replacement parts are available for ELV solenoid valves?
ELV offers replacement parts including NBR elastomer membranes and solenoid coils. For example, the ELV90528 is an NBR membrane for the ELV10010 valve, and the ELV90508 is for the ELV05016 valve. These membranes are critical for sealing and proper valve operation, and replacing them during maintenance can extend valve life. Coils are available in various voltages, such as the 12V DC coil for 45xxx and 50xxx series valves. Stocking these parts helps minimize downtime during maintenance cycles.
What is the difference between direct-acting and indirect-acting ELV solenoid valves?
Direct-acting ELV solenoid valves, such as the ELV25012, use the solenoid force to directly open or close the valve, and they operate from 0 bar up to their maximum pressure rating. Indirect-acting (or pilot-operated) valves, like the ELV10006, use the pressure differential across the valve to assist in switching, which allows for larger flow capacities but requires a minimum pressure differential to operate. For example, the ELV10006 operates at 0.5-13 bar with a maximum of 17 bar. Choose direct-acting for low-pressure or zero-pressure applications, and indirect-acting for higher flow rates with sufficient system pressure.





