Professional Transmission Valve Manufacturer | Compatible with Eaton Fuller K-3331, A-5000, A-4740

About Caiteng

Zhuji Caiteng specializes in the R&D and manufacturing of mechanical components. We leverage proven process systems and rigorous quality control to provide diversified part solutions, from standard to precision levels. Our IATF 16949-certified quality system enables micron-level machining accuracy and strict geometric tolerance control, delivering highly stable and compatible components for sectors including rail transit, automotive parts, marine hardware, and transmission control valves. We are a trusted long-term supplier to a number of industry leaders. We look forward to partnering with reliability-focused clients, supporting product advancement with precision manufacturing, and building resilient supply chains through integrity and collaboration.

Heavy Truck Transmission Pneumatic Valve

Precision Grinding and Inspection, Cylindricity ≤ 0.0025mm.

Product category display

Transmission pneumatic control valve As a designated manufacturing partner for Eaton, we supply OEM-quality pneumatic control valves for transmissions, ensuring performance and standards aligned with Eaton's original specifications. We reliably produce and offer direct replacements for key Eaton legacy models, specifically the A-5000, A-4740, and K-3331, providing stable and dependable solutions for commercial vehicle and heavy-duty equipment transmission systems. Core Realization Capability： Our value stems from core manufacturing capabilities that span the entire product lifecycle: Process Design: transforming complex products into efficient, reliable mass production processes; Key Process Breakthrough: specializing in overcoming core bottlenecks to ensure performance meets standards; Mass Production System Building: establishing stable and controllable mass production and quality control systems. Leveraging this capability chain, we achieve stable high-volume supply to customer production lines, ensuring operational continuity and cost optimization.

Precision Machining of Formed Blanks We specialize in the near-net-shape and precision machining of complex components from various formed blanks, including castings, forgings, and profiles. Leveraging established process design capabilities, we develop effective machining strategies for demanding parts across automotive, pump/valve, and general industrial applications. Our focus extends beyond machining to encompass material integrity and production consistency. By integrating controlled external blank sources with in-house mastery over core processes, we provide an integrated solution from raw blank to finished component. This approach delivers strong adaptability and comprehensive value, particularly for high-mix, low-to-medium volume projects where precision and reliability are paramount.

High-performance mechanical base components These components form the physical foundation for the long-term, stable operation of equipment. We specialize in manufacturing critical base parts essential for overall system reliability, such as high-hardness wear-resistant bushings and high-strength specialized fasteners. Through deep material science expertise and surface engineering technologies, we ensure each component maintains its performance and integrity under demanding conditions—including heavy loads, constant friction, and corrosive environments. Our value lies in elevating these seemingly “standard” parts to a reliability grade that matches the service life of the host machinery, thereby helping customers reduce downtime, lower maintenance costs, and enhance the market reputation of their end products. Manufactured to Rigorous Specifications for Longevity: We manufacture strictly to your requirements for hardness, strength, and dimensions, aiming to deliver components with extended service life. Stable Supply to Simplify Your Sourcing: As your reliable manufacturing partner for base components, we provide consistent quality and on-time delivery, helping you consolidate and streamline procurement. Rigorous Process Control Ensures Batch Consistency: Full-process control from raw material to finished product ensures highly uniform performance and quality across every batch. Reliable Machining Solutions for High-Stress Applications: For your defined high-load, high-wear applications, we deliver proven machining and processing solutions. Manufacturing Assurance for Your Equipment's Reliability: Through reliable blueprint-based manufacturing, we provide solid component assurance for the overall reliability and quality of your end equipment.

High-precision spools/valve stems/shafts As core components for fluid motion control, our high-precision spools, valve stems, and shafts directly determine a system's responsiveness and efficiency. Through micron-level machining, specialized surface treatment, and full-process SPC control, we ensure our products offer considerable wear and anti-fatigue properties in demanding conditions. These core parts are designed to help your equipment achieve higher energy efficiency, reduce leakage, and support extended maintenance intervals, providing essential support for overall performance and reliability. The Core to Micron-Level Motion Control Accuracy: With cylindricity ≤0.0025mm and diameter tolerance ±0.0025mm, our parts form the foundation for fast system response and precise positioning. Designed for High Wear Resistance & Long Life: Advanced heat treatment and surface coating technologies significantly increase surface hardness and wear resistance for high-frequency reciprocating motion. Ensure High Consistency in Mass Production: Our Statistical Process Control (SPC) system is designed to maintain tight quality standards, ensuring part-to-part and batch-to-batch uniformity that supports the stability of your production line. Data-Driven, Full-Process Accuracy Verification: Relies on professional equipment like CMMs and cylindricity testers to provide objective, traceable data reports for micron-level precision. Directly Boost System Efficiency & Reliability: Precise fit and low-friction characteristics help minimize internal leakage and energy loss, making them key to optimizing overall system performance.

Company advantage

Focus and professional

Focus on commercial vehicle parts. Focus on customer needs. Focus on technology research and development.

Doing business with Tritenco is easy

Years of pneumatic control valve production experience. Provide the right solution on time, every time. Convenient, Lag-Free Response.

Available business benefits

Offers many cost-reducing options one-stop shopping. Provide just-in-time (IT) delivery. Multi-variety small batch production.

Quality

ISO9001/IATF1 6949 certification FMEA 8D problem solving Preventive and Corrective Actions automated manufacturing

Efficient Coordination, Worry-Free Delivery

Smart Order Management

Utilizing an advanced order management system to achieve full-process digital tracking from order receipt, production to shipment, ensuring information transparency and rapid response.
Overseas Forward Warehousing

Operating a US-based overseas warehouse, supporting local distribution and flexible inventory management, significantly shortening delivery cycles, helping you respond quickly to market demands.
Consolidated Shipping Services

Efficiently consolidate products from multiple suppliers for container consolidation (LCL), substantially saving your logistics costs and simplifying customs clearance processes.
Professional Logistics Execution

Possessing extensive international logistics experience, calmly handling complex situations, ensuring safe and timely delivery of goods.