The Air seat operate device is a dedicated pneumatic control system that provides comfortable, adjustable suspension for the driver’s seat on the HOWO A7 8X4 heavy truck. This comprehensive kit includes the Cross-shaped Four-way joint2-NG6/M10×1/L6.3, Right angle jointNG6/NW4.5, Polyamide tube（Φ6*1）7, Hexagonal sealed screw M10X1.8, and O Rings 9X2.10. When you choose genuine howo Parts for your air seat operate device replacement, you guarantee smooth seat height adjustment, optimal ride comfort, and long-lasting pneumatic sealing for reduced driver fatigue on long hauls.
The Cross-shaped Four-way joint2-NG6/M10×1/L6.3 is a multi-port connector that allows the distribution of compressed air to multiple seat functions, such as height adjustment, lumbar support, and damping control. It provides a central junction point for the pneumatic circuit.
This joint is manufactured from high-grade brass with a nickel-plated finish, offering excellent corrosion resistance and dimensional stability under high-pressure conditions. Its cross configuration enables compact routing of air lines.
The joint features two NG6 ports for polyamide tubing, one M10x1 threaded port for a sealed screw, and an L6.3 port for additional connections. This versatility makes it ideal for complex seat control systems.
The Right angle jointNG6/NW4.5 is a 90-degree elbow connector that changes the direction of the air line, enabling efficient routing of the polyamide tube in tight spaces under the seat. It is essential for avoiding sharp bends that could restrict airflow.
This joint is made from durable brass with a corrosion-resistant coating. Its compact design minimizes the space required for installation and reduces stress on the tube.
The NG6 port accepts standard 6mm polyamide tubing, while the NW4.5 side provides a threaded connection for the seat valve or actuator, ensuring a secure, leak-free fit.
The Polyamide tube（Φ6*1）7 is a flexible, dimensionally stable pneumatic hose used to transmit air pressure from the supply to the seat control valve and actuators. Its 6mm outer diameter and 1mm wall thickness provide an optimal balance of flexibility and burst strength.
This tube is manufactured from PA12 polyamide, which offers excellent resistance to heat, oil, and abrasion. It is supplied in 2-meter lengths, providing enough material for most seat routing configurations.
The tube’s smooth inner surface minimizes flow resistance, allowing rapid seat adjustment response. Proper installation of the polyamide tube is critical for the air seat operate device to deliver consistent comfort and support.
The Hexagonal sealed screw M10X1.8 is a threaded plug with an integrated sealing ring, used to close unused ports on the cross-shaped joint or manifold. It prevents air leakage and contamination ingress.
This screw is made from steel with a zinc-plated finish and features a hexagonal head for easy tightening with a standard wrench. The pre-installed O-ring ensures a reliable seal without the need for additional sealant.
Proper sealing of unused ports is essential for maintaining system pressure and preventing contamination of the pneumatic circuit.
The O Rings 9X2.10 are precision-molded elastomeric seals used to create a leak-proof seal between the cross-shaped joint, the right angle joint, and the seat valve connections. They are designed to withstand high pressure and temperature variations.
These O-rings are made from nitrile rubber (NBR) with a hardness of 70 Shore A, providing excellent resistance to oil, grease, and common automotive fluids.
The 9mm inner diameter and 2.10mm cross-section ensure a perfect fit for the M10 threaded ports, guaranteeing a durable seal that prevents pressure loss in the air seat operate device.
Regular inspection of O-rings is recommended, as aging or cracking can lead to air leaks and reduced seat performance. Replacing them during maintenance extends the life of the system.
Air seat operate device – Complete pneumatic control kit for HOWO A7 8X4 driver seat
| Part NO. | Description |
|---|---|
| WG9000361405 | Cross-shaped Four-way joint2-NG6/M10×1/L6.3 |
| WG9000361207 | Right angle jointNG6/NW4.5 |
| 190003179782 | Polyamide tube（Φ6*1）7 |
| WG9000361035 | Hexagonal sealed screw M10X1.8 |
| WG9000361036 | O Rings 9X2.10 |
Our air seat operate device components are precision-machined from high-quality brass and steel, ensuring long-term reliability in the harsh cab environment. The polyamide tube and O-rings are resistant to oil, heat, and ozone, providing a leak-free pneumatic system.
The complete kit includes all necessary fittings, tube, and seals, eliminating the need to source individual parts. This saves installation time and ensures compatibility, reducing the risk of air leaks or improper assembly.
All components are designed to OEM specifications, ensuring a perfect fit on the HOWO A7 8X4. The cross-shaped joint and right angle joint are precisely sized to match the seat valve ports, simplifying installation and alignment.
We back our air seat operate device with a comprehensive warranty and technical support. Choose genuine howo Parts for the confidence of consistent seat comfort, reduced driver fatigue, and enhanced ride quality over millions of miles.
The air seat operate device is responsible for regulating the air pressure that supports the driver’s seat suspension, allowing the seat to absorb road shocks and maintain a stable ride height. This reduces whole-body vibration and improves driver comfort over long hours of driving.
The system uses compressed air from the vehicle’s brake supply, routed through a pressure regulator to the seat control valve. The driver adjusts the seat height and firmness using a manual or electronic control, which modulates the air flow to the seat air spring.
The cross-shaped four-way joint serves as the central distribution point, supplying air to multiple seat functions, such as height adjustment, lumbar support, and side bolster inflation. The right angle joint enables tight routing of the polyamide tube behind the seat mechanism.
The hexagonal sealed screw and O-rings are critical for sealing unused ports and preventing air leaks. Even a small leak can cause the seat to slowly lose height, requiring frequent adjustment and reducing comfort.
Begin by isolating the air supply and relieving pressure from the seat circuit. Remove the old seat valve connections and clean the mounting area to ensure a dry, debris-free surface.
Install the cross-shaped four-way joint onto the seat valve, using the hexagonal sealed screw to close any unused ports. Apply a thin layer of pneumatic sealant to the threads if required, and torque the joint to 10–12 N·m.
Attach the right angle joint to the appropriate port on the seat actuator, again using the provided O-rings to ensure a tight seal. Cut the polyamide tube to the required length, ensuring a clean, square cut, and push it firmly into the joints until it bottoms out.
Route the tube away from sharp edges and moving seat mechanisms, using cable ties to secure it if necessary. Ensure the tube is not kinked or pinched, as this would restrict airflow and reduce seat performance.
After installation, pressurize the system and check for leaks using a soapy water solution. Activate the seat adjustment controls and verify that the seat raises, lowers, and firms up smoothly. Listen for any hissing sounds that indicate a leak.
The air seat operate device components are designed for the HOWO A7 8X4 with the standard pneumatic seat control system. They are compatible with all seat variants offered in this model, including mechanical and electronic control types.
The cross-shaped joint and right angle joint use standard NG6 and NW4.5 interfaces, making them interchangeable with similar fittings from other manufacturers. However, for guaranteed performance, we recommend using genuine parts.
The polyamide tube is a common 6mm OD tubing, readily available. The O-rings are a standard size (9mm ID × 2.10mm CS) and can be replaced with equivalent nitrile rubber seals if needed.
When replacing individual components, always verify the thread sizes (M10x1.0) and port configurations to ensure a proper fit. Our technical support team can assist with identification.
A properly functioning air seat operate device significantly improves driver comfort by maintaining optimal seat height and suspension characteristics. This reduces spinal compression and muscle fatigue, leading to increased productivity and safety.
The high-quality polyamide tube and O-rings resist degradation from ozone, oil, and temperature extremes, ensuring consistent air retention over thousands of operating hours. The brass fittings are immune to corrosion, maintaining thread integrity.
For fleet operators, standardizing on this kit simplifies inventory and ensures all drivers experience the same seat comfort, which can help with driver retention. Regular inspection of the system is recommended every 6 months or 50,000 km.
We recommend replacing the O-rings every 2 years, as they may harden over time and lose their sealing ability. Keep spare polyamide tube and O-rings in your service vehicle for quick repairs.
Our technical support team is available to assist with any installation questions or compatibility checks. We are committed to keeping your HOWO A7 8X4 cab comfortable and productive with our air seat operate device solutions.
Order your air seat operate device kit today and experience the confidence that comes with genuine howo Parts. Your drivers will appreciate the difference in ride quality and comfort.
With over 20 years of experience in heavy-duty truck parts, we have the expertise to supply the highest quality components. Trust us for all your pneumatic seat control needs.
We offer competitive pricing and fast shipping to keep your fleet on the road. Contact us today for bulk order discounts and technical support.
Remember, a well-maintained air seat system is essential for driver health and productivity. Don’t compromise on quality – choose our Air seat operate device kit.
Regular maintenance of the air seat operate device includes checking the tube for abrasion, ensuring all fittings are tight, and testing the seat functions. A proactive approach prevents unexpected downtime and keeps drivers comfortable.
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