XCMG Solenoid Valve Replaced
Precise Pilot and Transmission Control with the XCMG Solenoid Valve Replaced SV98-T40 XCMG excavators and loaders rely on precise hydraulic control for smooth operation. The XCMG solenoid valve replaced by Flying Bull (Model SV98-T40) is a proportional solenoid valve designed for low-pressure pilot systems and power shift transmission control. It is a direct replacement for XCMG machinery, including the LW600K loader and various excavator models. The SV98-T40 proportional solenoid valve is a directional control valve. It converts an electrical input signal into a proportional hydraulic output – either pressure or flow. Inside the valve, a proportional solenoid moves the spool based on the voltage signal. The spool position changes the valve port opening size. That varies the pressure or flow to the pilot circuit or transmission clutch. Unlike on/off solenoids that are either fully open or fully closed, the SV98-T40 provides variable control. For example, a small voltage signal opens the valve a little for slow movement. A large voltage signal opens it fully for fast response. This proportional action allows smooth acceleration, precise attachment positioning, and gentle gear shifts. Key technical specifications: Operating pressure: Up to 30 bar (435 psi). Flow rate: 30 L/min (8 gpm). Internal leakage: Maximum 70 ml/min (4.3 in³/min) from inlet to tank at 30 bar. Temperature range: -40°C to 120°C. Coil duty rating: Continuous operation from 85% to 115% of nominal voltage. Response time (at 100% voltage and full flow): Pull-in (energizing) 50 ms; Drop-out (de-energizing) 30 ms. Coil: Integral, waterproof, and non-serviceable (replace the entire valve if the coil fails). Why the SV98-T40 is important for XCMG equipment: Construction machinery operates in harsh conditions – dust, vibration, temperature extremes, and moisture. The SV98-T40 features an integral waterproof coil as standard. The coil is encapsulated and sealed, so it keeps working even in rain, pressure washing, or high-humidity environments. Because the coil is integral and non-serviceable, you cannot replace just the coil. If the coil fails, replace the entire valve. That is why keeping a spare XCMG solenoid valve replaced unit in your parts inventory saves downtime. Proportional valve advantages: Proportional solenoid valves are becoming standard in modern construction machinery for several reasons: High control accuracy – The spool position is proportional to the input signal. That allows fine control of speed and force. Easy integration with electronics – Proportional valves work directly with ECUs, joysticks, and remote control systems. Good contamination tolerance – Compared to servo valves, proportional valves are more tolerant of dirty oil (though clean oil is still required). Flexible installation – Cartridge-style valves like the SV98-T40 install directly into manifolds, saving space and reducing leak points. The SV98-T40 is particularly suited for electronic pilot operation, wireless remote control, and wired remote control applications. When used in load sensing and pressure-compensated systems, it contributes to fuel savings and smoother machine operation. Flying Bull’s XCMG solenoid valve replaced SV98-T40 is 100% brand new, manufactured in Zhejiang, China, and backed by a 1‑year warranty. Delivery takes 5–7 working days. Choose Flying Bull for reliable proportional solenoid valves in XCMG machinery.
Product Introduction
Products Description
Model: SV98-T40 |
Application: XCMG Solenoid Valve Replaced |
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Warranty: 1 YEAR |
Condition: New, 100% Brand-new |
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Place of Origin: Zhejiang, China |
Power: Proportional solenoid valve |
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Manufacturer: Made in China |
Quality: High-Quality |
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Delivery: 5-7 Working Days |
Pressure: Ordinary Pressure |
Engineering machinery parts 25223075 SV98-T40 hydraulic pump proportional solenoid valve is suitable for XCMG excavators Suitable for loader LW600K.
Description
Directional control valve. It is well suited for use in specialized low-pressure pilot systems or power shift transmission control.
The coil is an integral part of the valve and is not serviceable.
Economical drop-in style.
Integral waterproof coil standard
Operating Pressure: up to 30 bar (435 psi) Flow: 30 lpm (8 gpm)
Internal Leakage: 70 ml/minute (4.3 cu. in./minute) maximum from inlet to tank at 30 bar (435 psi)
Temperature: -40 to 120℃
Coil Duty Rating: Continuous from 85% to 115% of nominal voltage
Response Time: First indication of change of state with 100% voltage and flow rating: Pull-in: 50 ms; Drop-out: 30 ms.
Proportional solenoid valve working principle
Proportional solenoid valve is the proportional solenoid in the valve according to the input voltage signal to produce the corresponding action, so that the working valve spool displacement, valve port size changes and complete the pressure and flow output components proportional to the input voltage.
Spool displacement can also be fed back mechanically, hydraulically or electrically. Because the proportional valve has various forms, easy to form a variety of electrical and computer-controlled electro-hydraulic systems, high control accuracy, flexible installation and use, and strong anti-pollution ability, the application field is widening. Research in recent years.
The plug-in proportional valve and proportional multiway valve have the functions of pilot control, individual load sensing and pressure compensation, taking fully into account the use characteristics of construction machinery. Its appearance is of great significance to the improvement of the overall technical level of mobile hydraulic machinery. Especially in the electronic pilot operation, wireless remote control and wired remote control and other aspects of its good application prospects.
Company Introduction
Frequently Asked Questions (FAQ)
1. What is the model number and application of this XCMG solenoid valve?
The model number is SV98-T40. This proportional solenoid valve is used in XCMG excavators and loaders, including the LW600K loader. It is suitable for low-pressure pilot systems and power shift transmission control.
2. What is the difference between a proportional solenoid valve and a standard on/off solenoid?
A standard on/off solenoid is either fully open or fully closed – like a light switch. A proportional solenoid valve (like the SV98-T40) varies the spool position based on the input voltage. A small voltage opens the valve a little; a larger voltage opens it more. That allows smooth, variable control of speed, pressure, and force.
3. Can I replace just the coil if it fails?
No. The coil is integral and non-serviceable. It is encapsulated into the valve as a single unit. If the coil fails, you must replace the entire valve. This is why keeping a spare SV98-T40 in your parts inventory is recommended.
4. What are the key technical specifications of the SV98-T40?
Operating pressure up to 30 bar (435 psi), flow up to 30 L/min (8 gpm), internal leakage maximum 70 ml/min at 30 bar, temperature range -40°C to 120°C, continuous duty coil, response time 50 ms pull-in and 30 ms drop-out.
5. Is the coil waterproof?
Yes. The SV98-T40 features an integral waterproof coil as standard. It is designed to withstand rain, pressure washing, and high-humidity environments common on construction sites.
6. What is the working principle of a proportional solenoid valve?
The proportional solenoid receives a voltage signal from the ECU or joystick. The solenoid moves the spool a distance proportional to that signal. The spool position opens or closes internal ports. Changing the port opening size varies the hydraulic pressure or flow delivered to the pilot circuit or transmission clutch. This allows precise, smooth control.
7. Why are proportional valves becoming common in construction machinery?
They offer high control accuracy, easy integration with electronic controls (including wireless and wired remote control), good contamination tolerance (compared to servo valves), and flexible cartridge-style installation. When combined with load sensing and pressure compensation, they improve fuel economy and machine responsiveness.
8. Does the XCMG solenoid valve replaced SV98-T40 come with a warranty?
Yes. Flying Bull provides a 1‑year warranty against manufacturing defects. Damage caused by contaminated fluid (filtration below requirements), overpressure beyond 30 bar, voltage outside 85%-115% of nominal, or improper installation is not covered. Always use clean hydraulic oil and maintain proper filtration.
9. Is this valve suitable for wireless remote control applications?
Yes. The SV98-T40 is well-suited for electronic pilot operation, including wireless remote control and wired remote control. The proportional solenoid responds directly to the voltage signal from the receiver or controller.
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