KFDG4V-5-33C50N-ZMU-H7-20 Proportional Directional Valve

Model Decomposition Explanation
1. KFDG4V
-Series code, representing EATON's 4-way proportional directional valve with electrical feedback (LVDT).
2. -5
-The specifications and dimensions of the valve (such as 5 representing the valve body size or flow specification, please refer to EATON's size chart for details).
3. -33
-Valve core function code:
-33: Medium closed (O-type median), A/B ports blocked, P → T open (specific median function needs to confirm sample).
4. -C50
-Coil type and electrical parameters:
-C50: Usually represents 24V DC drive, rated current and other parameters (specific current values need to be verified).
5. -N
-Optional code, which may represent additional options for the valve (such as sealing material, corrosion resistance, etc.).
6. -ZMU
-Feedback type and electrical interface:
-ZMU: may refer to a plug type connector with LVDT (Linear Variable Differential Transformer) feedback.
7. -H7
-Pressure or performance level code (such as maximum working pressure of 350 bar).
8. -20
-Design version or special custom code (e.g. 20 may refer to specific processes or year revisions).
Key Features
-Proportional control: Continuously adjust flow and direction through electrical signals (0-10V or 4-20mA).
-Median function: 33 is usually an O-type median (A/B closed, P → T open), suitable for load holding applications.
-Feedback (LVDT): Real time monitoring of valve core position to improve control accuracy.
-High pressure: H7 may support 350 bar, suitable for heavy-duty hydraulic systems.
-Applicable fluid: Mineral oil (ISO VG 32-68), temperature range -20 ° C to+80 ° C.
 

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