LOVOL Solenoid Valve Replaced
Product Description: LOVOL Solenoid Valve for Precise Pump Control (HLPPRV06A) LOVOL excavators (FR170, FR220, FR240 series) and certain SY235 models depend on precise hydraulic pump control for efficient digging and smooth operation. At the heart of that control is the proportional solenoid valve. The LOVOL solenoid valve replaced by Flying Bull (Model HLPPRV06A) is a direct replacement hydraulic pump proportional solenoid valve for LOVOL and compatible excavators. It operates on DC24V with oil media under ordinary pressure. The valve is 100% brand new, manufactured in Zhejiang, China, and backed by a 1‑year warranty. Delivery takes 5–7 working days. Model and Specification Model: HLPPRV06A Voltage: 24V DC Type: Hydraulic pump proportional solenoid valve (also known as a proportional pressure reducing valve or pump displacement control valve). Function – How the HLPPRV06A Works The hydraulic pump proportional solenoid valve HLPPRV06A is an important control element in the excavator hydraulic system. It is typically mounted on the main hydraulic pump (variable displacement pump). The valve controls: Flow: How much oil the pump delivers per revolution. Direction: Which way the oil flows (direction of the control spool). Pressure: The output pressure of the pump or the pilot pressure that signals the pump to change stroke. By adjusting the electromagnetic signal (current) sent to the solenoid, the valve controls the opening of the valve spool. More current = more spool movement = different hydraulic oil flow to the pump's swash plate actuator. The pump then changes its displacement. This allows the excavator to match hydraulic power to the task – high flow for digging, reduced flow for fine grading. Suitable Excavator Models The HLPPRV06A is suitable for: LOVOL FR170, FR220, FR240 series excavators. SY235 excavator (and other models that use the same pump control system). Always verify your original part number before ordering. Do not rely only on machine model. Performance Characteristics – Why the HLPPRV06A is the Right Choice Fast Response Speed: The proportional solenoid valve can quickly respond to commands issued by the control system (excavator ECU or pump controller). It rapidly adjusts the spool position. This means the pump changes displacement almost instantly when the operator moves a joystick. No lag, no hesitation. High Control Accuracy: Through accurate electromagnetic control, the valve achieves precise adjustment of hydraulic oil flow. The excavator moves smoothly – the boom raises without jerking, the bucket curls accurately, and the swing stops exactly where the operator wants. This reduces operator fatigue and increases productivity. Good Stability: The valve maintains a stable working state even in complex working environments – dust, vibration, temperature swings, and pressure spikes. It does not drift or become erratic over time. This ensures the excavator works normally shift after shift, day after day. Installation and Maintenance – Keep Your LOVOL Excavator Productive Installation: Pay attention to the matching between the solenoid valve and the hydraulic system. Ensure the installation position is correct and the valve is fixed firmly. Use new O‑rings (seals) when installing. Lubricate seals lightly with clean hydraulic oil. Tighten the valve to the recommended torque. Do not overtighten. Reconnect the electrical connector securely. Apply dielectric grease to prevent corrosion. Maintenance: Regularly check the working status of the solenoid valve. Listen for unusual noises (buzzing, clicking). Feel for excessive heat. If there is any abnormality – the machine is slow, the engine labors, or the pump makes unusual sounds – the solenoid valve may be failing. Replace or repair the valve in a timely manner. Do not wait for a complete failure that leaves the excavator stranded. Why Choose Flying Bull for the LOVOL Solenoid Valve HLPPRV06A? Direct Replacement: Matches LOVOL original part HLPPRV06A (24V). Fast Response: For smooth, responsive excavator operation. High Accuracy: Precise flow control for fine grading and heavy digging. Good Stability: Reliable in harsh environments. 100% Brand New: Not rebuilt or remanufactured. 1‑Year Warranty: Against manufacturing defects. Fast Delivery: 5–7 working days from Zhejiang, China.
Product Introduction
Products Description
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OE NO.: HLPPRV06A |
Media: Oil |
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Warranty: 1 YEAR |
Condition: New, 100% Brand-new |
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Place of Origin: Zhejiang, China |
Item: Solenoid |
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Brand Name: FLYING BULL |
Quality: High-Quality |
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Delivery: 5-7 Working Days |
Pressure: Ordinary Pressure |
Hydraulic Valve HLPPRV06A Construction Machinery Parts
The hydraulic pump proportional solenoid valve HLPPRV06A/24V used in the excavator LOVOL 170/220/240 series is an important control element in the excavator hydraulic system. The following is detailed information about these solenoid valves:
Model and specification
Model: HLPPRV06A
Voltage: 24V
Function
① Hydraulic pump proportional solenoid valve HLPPRV06A/24V is used to control the flow, direction and pressure of the oil in the hydraulic system to achieve accurate action and efficient work of various parts of the excavator.
② By adjusting the size of the electromagnetic signal, the opening of the valve core can be controlled, and then the flow of hydraulic oil can be changed to achieve the smoothness and accuracy of the excavator action.
Suitable for excavator model
① SY235 excavator
② LOVOL FR170, FR220, FR240 series excavators
Performance characteristics
① Fast response speed: It can quickly respond to the command issued by the control system and quickly adjust the spool position.
② High control accuracy: Through accurate electromagnetic control, to achieve accurate adjustment of hydraulic oil flow.
③ Good stability: It can maintain a stable working state in a complex working environment to ensure the normal work of the excavator.
Installation and maintenance
① Pay attention to the matching between the solenoid valve and the hydraulic system during installation to ensure that the installation position is correct and fixed firmly.
② It is necessary to check the working status of the solenoid valve regularly during maintenance. If there is any abnormality, it should be replaced or repaired in time.
Company Introduction
Frequently Asked Questions (FAQs)
1. What is the model number and voltage of this LOVOL solenoid valve?
The model number is HLPPRV06A and the voltage is 24V DC. This is a hydraulic pump proportional solenoid valve.
2. Which excavator models use the HLPPRV06A solenoid valve?
It is suitable for LOVOL FR170, FR220, FR240 series excavators and the SY235 excavator. Other models that use the same pump control system may also be compatible. Always verify your original part number before ordering.
3. What is the function of the hydraulic pump proportional solenoid valve?
The valve controls the flow, direction (of control oil), and pressure of oil in the hydraulic system. By adjusting the electromagnetic signal, it changes the pump's displacement. This achieves accurate, efficient action of the excavator's boom, arm, bucket, and swing.
4. How does the HLPPRV06A adjust hydraulic pump output?
The valve receives a variable electrical current from the ECU. More current moves the spool more, which changes the pilot pressure to the pump's swash plate actuator. The pump then increases or decreases its displacement – more flow for heavy digging, less flow for fine control.
5. What are the performance characteristics of the HLPPRV06A?
(1) Fast response speed – quickly reacts to control commands. (2) High control accuracy – precise flow adjustment. (3) Good stability – maintains stable operation in harsh environments.
6. How does fast response speed benefit excavator operation?
The pump changes displacement almost instantly when the operator moves a joystick. There is no lag or hesitation. The excavator feels responsive and predictable – reducing operator fatigue and increasing productivity.
7. What should I check during routine maintenance of this solenoid valve?
Check the electrical connector for corrosion. Listen for unusual buzzing or clicking. Feel the coil for excessive heat (warm is normal, hot enough to burn is not). Ensure there are no external oil leaks around the valve body. If the machine is slow or the engine labors, test the valve.
8. What is the most common cause of failure for a proportional solenoid valve?
Contaminated hydraulic oil is the leading cause. Dirt and debris can stick the spool or wear the valve bore. Electrical issues (overvoltage, undervoltage, poor connections) are also common. Keep the hydraulic oil clean and change filters on schedule.
9. Does the LOVOL solenoid valve HLPPRV06A come with a warranty?
Yes. Flying Bull provides a 1‑year warranty against manufacturing defects. Damage caused by contamination (dirty oil), incorrect voltage (24V system required), overpressure, or improper installation is not covered.
10. Is this valve a direct replacement for the original LOVOL part?
Yes. The HLPPRV06A is manufactured as a direct replacement for the original LOVOL proportional solenoid valve. It matches the original mounting dimensions, flow characteristics, pressure rating, voltage (24V), and connector type. Always verify your original part number before ordering.
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