Use For Komatsu D275A-5 D275AX-5 Bulldozer Distribution Valve 723-65-21300 723-64-23400 723-65-22300 Main Control Valve | Bulldozer Control Valve Construction Machinery Aftermarket Part

Regulates hydraulic oil flow, direction, and pressure to control dozer blade movement, track travel, and compound operations, serving as the hydraulic system’s core controller.

• System Pressure: The main relief valve setting pressure is 27.5 MPa (280 kg/cm²), suitable for the high-pressure hydraulic system of the whole machine to ensure power output for dozing, traveling and other actions.
• Structure Type: Adopts a slide valve type multi-section main control valve, integrating multiple hydraulic control branches such as dozing circuit and traveling circuit, supporting synchronous adjustment of compound actions.
• Control Method: Equipped with PCCS (Palm Command Control System). Precise hydraulic control of dozer blade lifting/tilting and machine traveling/steering is realized through joysticks, with sensitive operation response.
• Applicable Models: Custom-made for D275A-5 and D275AX-5 bulldozers, fully matching the hydraulic parameters of Cummins engine, hydraulic pump and actuators (cylinders, travel motors).
• Core Part Numbers: 723-65-21300 723-64-23400 723-65-22300 (corresponding to spool/valve body components of different control circuits).

• High-precision control for responsive and accurate actions.
• High-pressure resistance and durability for heavy-duty work.
• Multi-circuit integration for simultaneous control of multiple hydraulic functions.
• Custom-fit for D275A-5/D275AX-5, ensuring system compatibility.
• Easy maintenance with detachable components for quick repairs.

• Installation Requirements: Requires a flexible coupling with high shaft alignment accuracy (concentricity deviation ≤ 0.1 mm, tilt angle < 1°)
• Maintenance Guidelines: Recommended use of ISO VG46 anti-wear hydraulic oil with a cleanliness level of NAS Class 7
• Regularly monitor oil temperature, pressure pulsation, and piston wear

Guangzhou Tieqi Engineering Machinery Co., Ltd. ("IRON CAVALRY")

Location & Overview: Strategically located in Guangzhou's Huangpu District, approximately an hour from Baiyun International Airport, Tieqi has been a dedicated specialist in engineering machinery hydraulics for nearly 15 years.

Our Core Values

Driven by our core values of "Pragmatism and Progress," we are committed to delivering practical solutions and upholding our responsibilities. This principle-driven approach defines all our operations and client partnerships.

Technical Leadership & Standards

In China's excavator hydraulic assembly sector, our efficient execution and rigorous approach to manufacturing every product to meet over 95% of original performance specifications have built widespread trust.

For large items, we use sturdy plywood crates secured with metal fasteners for added stability. Inside, the products are cushioned with bubble wrap and secured with wooden braces, while special attention is given to protecting vulnerable parts. Externally, the crates are reinforced with high-strength PET plastic strapping and wrapped in highly waterproof black film.