195N0203 Danfoss

195N0203 Danfoss ACB Power module

Brand：Danfoss Model number：195N0203

Country of origin:Denmark Product weight：0.55kg

HS code：8517623990

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Product Details：

Product Dimensions：

The 195N0203 is identified as a Normally Closed (NC) Insert Valve that operates using a solenoid coil (which must be ordered separately). It is part of the extensive Danfoss range of valves used for various industrial and commercial fluid applications.

Product Specifications

Type: Insert Valve
Function: Servo-operated diaphragm solenoid valve
Operation: Normally Closed (NC) - the valve is closed when the coil is de-energized, and opens when power is supplied to the coil.
Ambient Temperature: Suitable for a range typically between $-30^\circ \text{C}$ to $+50^\circ \text{C}$ (check specific documentation for exact limits).
Media Temperature: Handles media temperatures typically up to $100^\circ \text{C}$ or $120^\circ \text{C}$ .
Maximum Working Pressure (MWP): The pressure rating depends heavily on the valve body it is installed in and the specific medium, but these insert valves often support pressures up to $10 \text{ bar}$.
Flow $\text{Kv}$ Value: The $\text{Kv}$ value (flow coefficient) is a critical parameter that indicates the flow capacity. For this type of valve, it is typically around $2.5 \text{ m}^3\text{/h}$ to $4 \text{ m}^3\text{/h}$ depending on the bore size and specific model variant.
Port Size: The actual connection size is determined by the valve body the insert is fitted into.

Product Advantages

Modular Design: The insert valve system allows for high flexibility and ease of maintenance. If the coil or the internal mechanism fails, only the faulty component needs replacement, not the entire valve body.
High Reliability: Danfoss products are known for their durability and long service life, ensuring reliable fluid control in critical applications.
Wide Compatibility: The valve is compatible with various Danfoss coils and a range of valve bodies, allowing it to be adapted to different pressure, temperature, and connection requirements.
Energy Efficiency: As a servo-operated valve, it uses the differential pressure of the media to assist in opening and closing, which often allows for the use of smaller, less power-consuming solenoid coils compared to direct-operated valves.

Important Considerations (Precautions)

Coil Ordering: The 195N0203 is only the insert mechanism; a suitable solenoid coil (with the correct voltage and IP rating) must be ordered separately to make the valve operational.
Minimum Differential Pressure: This is a servo-operated (or pilot-operated) valve, meaning it requires a minimum pressure differential across the valve (typically around $0.2 \text{ bar}$ or higher) to open fully and operate correctly. It is not suitable for zero or very low-pressure applications.
Media Cleanliness: The media must be clean and free of particulate matter. Debris can interfere with the pilot hole and diaphragm operation, leading to valve failure or leakage. A filter or strainer should be installed upstream.
Installation Orientation: While many solenoid valves can be installed in any position, installing them with the coil vertical and on top is often recommended for maximum operational life and to prevent sediment from settling on the moving parts.

Product Applications

The Danfoss 195N0203 insert valve, when combined with a coil and body, is used for the control and shut-off of neutral fluids in a variety of industries.

Water Treatment: Controlling the flow of water in purification, softening, and filtration systems.
Compressed Air Systems: Shut-off or control of dry compressed air lines.
Boilers and Heating Systems: Controlling the flow of hot water or low-pressure steam (check temperature limits).
Industrial Washing and Cleaning Equipment: Used for precision dosing and flow control of cleaning solutions and rinse water.
Irrigation Systems: Automation of water distribution in large-scale commercial irrigation.

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