MYERS DP85-20 Pump

Solid Foundation: the core of the power end is a gearbox made of solid monolithic cast iron, which provides protection for the internal transmission components and doubles as a high-capacity fuel tank, excellent lubrication of all moving parts through a continuous splash lubrication system. Its top cover is designed for quick disassembly, greatly facilitating routine inspection and maintenance.
Excellent transmission system: we use high-strength, forged and heat-treated alloy steel on key transmission components to ensure its performance under continuous heavy loads.
Crankshaft: automotive grade forged heat-treated alloy steel crankshaft, designed for continuous operation and maximum service life, to ensure smooth and reliable transmission of power.
Gears: both pinion and main gears are machined from high-strength alloy steel and are designed with helical teeth, which not only provide smooth and quiet operation, but also allow the crankshaft to rotate in both directions, providing great flexibility for on-site installation.
Bearing and connecting rod system: DP85-20 is equipped with heavy duty bearing system, main bearings are tapered roller bearings, crankshaft journal bearings are automotive grade steel back inlaid bearings, together, they ensure minimum friction and longer life. The connecting rod is made of high strength ductile iron with replaceable bronze wrist pin bearings to further enhance the durability of the system.

Core structure: hydraulic end pump body made of high strength ductile iron, to withstand up to 2000 psi work pressure to provide a solid structural protection.

Plunger-the key to performance: we use stainless steel material, and its surface coated with tungsten carbide. This"Super hard" and"Scratch-free" plunger surface precision grinding, has excellent wear resistance, can significantly extend the service life of the seal, ensure that the pump after a long time to maintain efficient operation.

Sealing technology: the sealing system adopts high pressure, spring loading, self-lubricating braided packing design, can adapt to a variety of complex application environment. The seat is made of corrosion resistant aluminum bronze and is designed to allow quick and easy replacement of seals on site.

Valve system: spring-loaded center-post valves with durable acetal valves and stainless steel seats ensure stability and long life in high-speed reciprocating motion. Each valve can be serviced independently without disassembly or interference with the inlet and outlet lines, greatly simplifying the maintenance process.

Crosshead and pony: heavy-duty ductile iron crosshead and highly polished stainless steel pony (crosshead extension) ensure rigidity and accuracy in power transmission. The oil seal for the pony rod is specially designed to be replaced without removing the entire hydraulic end, a strategic engineering decision that can significantly reduce downtime and directly improve operational efficiency.

Table 1: Myers DP85-20 detailed technical specifications

The DP85-20 has proven its superior value and reliability in several key industrial areas with its higher flow, strong pressure, and robust construction.

Municipal and sewer cleaning: the 85 GPM flow rate provides greater flushing capacity to remove loose debris and silt from pipes more quickly, while the 2000 psi high pressure breaks down and peels away stubborn blockages. This combination of capabilities makes it the preferred equipment for efficient trunk cleaning and sewer dredging by municipal service contractors.

Horizontal and vertical drilling: the DP85-20 is a superior, well-sized mud pump for HDD, water well drilling, geothermal drilling, and core drilling applications. Its rugged hydraulic end and wear-resistant plunger effectively process drilling fluid (mud) containing abrasive particles, providing the bit with the necessary lubrication, cooling and cuttings removal functions.

Mining applications: the versatility of the DP85-20 is also demonstrated in mining operations. It can be used for underground dust removal, high-pressure washing of heavy equipment, liquid transport in ore processing, and mine drainage and other tasks. It is able to handle pH values in
4 to 11, allowing it to adapt to the changing chemical environment of the mine.

Industrial cleaning and hydraulic applications: the DP85-20's high-pressure, high-flow capabilities make it ideal for a variety of industrial cleaning tasks, including hydraulic sand blasting, heat exchanger and reactor internal cleaning, steel descaling and concrete surface treatment.

Choosing Myers DP85-20 means you are investing not only in a device, but also in operational continuity and a lower total cost of ownership (TCO) . We have built a well-established support ecosystem to ensure that your devices remain at their best for decades to come.
Comprehensive original spare parts support: our long-term commitment to products is reflected in a mature and stable spare parts supply chain. From the smallest gaskets and o-rings to core components such as crankshafts and hydraulic end pump bodies, we offer a full range of OEM spare parts. This wide availability of spare parts ensures that your equipment doesn't go out of production because a small part is missing.
Maintenance kits for simplified maintenance: to further simplify the maintenance process, we offer pre-configured maintenance kits, such as hydraulic end maintenance kits (SKU 17678A081 for DP85-20 & DP90-18) . These kits contain all the necessary components for a standard overhaul, not only simplifying the ordering process, but also ensuring that technicians have the correct parts on site, thereby reducing maintenance errors and delays.
Empowering customers: we provide customers with the confidence to carry out self-maintenance by providing detailed service manuals and component breakdown diagrams. CLEAR instructions and professional documentation enable your team to follow manufacturer's specifications to ensure maintenance quality and long-term reliability of the equipment. Our recommended maintenance plan (e. g. , daily oil level check, oil change every 300 hours, packing check every 500 hours) outlines a clear path for you, to maximize the life of the equipment.
Ultimately, buying the DP85-20 is not just about acquiring a pump, but about building a relationship with a brand that is committed to your long-term operational success. With a complete ecosystem of spare parts, knowledge and services, we will protect your investment and ensure that it continues to create value for you in the years to come.

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