DRAGON 440HP Mud Pump

The standard configuration is equipped with a Detroit Series 60, Tier 3 diesel engine. Paired with this legendary engine is an Allison HT750DR transmission, renowned for its smooth and reliable power delivery under heavy loads, which is critical for reducing impact and stress on the mechanical components of the mud pump's power end.

Performance Matrix for Different Liner Configurations

Advanced Fluid End Technology: Precision Engineering Under Pressure

Core Material: The fluid end module is integrally forged from high-quality alloy steel, specifically grades such as 35CrMo or 40CrMnMo.

Manufacturing Process: The modules are forged rather than cast, and welding is strictly prohibited, fundamentally eliminating potential structural weaknesses. All modules undergo internal quenching and hardening processes, along with rigorous non-destructive testing (NDT), to ensure dense internal structure and excellent mechanical properties.

Quality Standards: Manufacturing takes place in advanced North American facilities certified to ISO 9001:2008. The design and production of fluid end modules fully comply with API 7K specifications, the recognized authoritative standard for drilling equipment in the oil and gas industry.

Design for Ease of Maintenance and Interchangeability

Structural Design: Features the industry-proven "L"-type fluid end design, which facilitates easier access to suction and discharge valves, significantly reducing maintenance downtime.

Key Feature: All fluid end wear parts and critical components are 100% interchangeable with those of the Ellis Williams (EW) Model 440 pump.

Adaptive Wear Parts: Customized for Maximized Uptime

Liner Selection: The First Line of Defense
Choosing the ideal liner material for your specific application-from standard conditions to the most abrasive and corrosive environments-can significantly extend maintenance intervals and reduce operating costs. A full range of wear parts is available, with liners offered in various materials to suit different fluid media and budget requirements.

Piston and Seal Technology: Ensuring Hydraulic Efficiency

Piston Types: Both bonded (vulcanized) and replaceable piston types are available.

Piston Core Material: Piston cores are forged from high-hardness alloy steel (e.g., 45# steel or 40Cr) and undergo heat treatment to enhance strength and resistance to deformation.

Piston Elastomer Material: The elastomer is made from high-performance composite materials such as polyurethane (Urethane) and nitrile rubber (NBR), designed for high-temperature resistance (up to 250°F / 121°C), wear resistance, and chemical resistance.

Matching Components: A full range of matching components is also provided, including API-standard piston rods, piston retainers, clamps, and various seals, ensuring the integrity and reliability of the entire system.

Proven Applications in Demanding Industries
The DRAGON 440HP is a versatile and multi-role fluid power solution that has been field-proven in some of the world's most challenging industrial sectors, demonstrating excellent reliability and adaptability.

Oil and Gas Exploration: This is its core application. The pump is explicitly defined as a "mud pump" for drilling operations, particularly suitable for:

Shallow well drilling operations, providing the circulating power needed to cool, lubricate, and carry cuttings for the drill bit.

Well Services and Workover: Its reliable pressure and flow output make it an ideal choice for well intervention, well killing operations, and hot washing operations. The inclusion of 1502 high-pressure swivel joints in some used equipment packages also strongly suggests its history of use in high-pressure well service lines.

Mining and Resource Extraction: The robust fluid end design, especially the optional ultra-wear-resistant zirconia ceramic liners, makes this pump highly suitable for handling the abrasive slurries and pulp commonly encountered in mining operations.

Heavy Civil and Industrial Pumping: Leveraging its high power and high-pressure capabilities, the pump is equally applicable to large-scale long-distance water transfer, pipeline pressure testing, proppant pumping for hydraulic fracturing, and other industrial applications requiring high-pressure fluid transfer.

Dongli's Commitment: Full Lifecycle Support, Service, and Spare Parts

Comprehensive Spare Parts Supply: Dongli provides a "full range of pump parts and wear parts". This is not just a promise but is delivered through an online parts store with clear SKUs. Customers can easily query and order components such as valves, valve seats, seals, packing, and clamps.

Advanced Repair Capabilities: These service centers are staffed with "highly skilled technicians" who possess the expertise and capability to perform thorough overhauls of the fluid end and the entire pump. This provides customers with a path to extend equipment life far beyond the initial wear cycle, maximizing the return on their capital investment.

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