DL1224 HDD Pump

Shijiazhuang Dongli Petroleum Machinery Co., Ltd. proudly presents its newly upgraded DL1224 series triplex plunger pump. This pump is based on the robust foundation of the widely acclaimed FMC M1224 model, optimized and enhanced through Dongli Petroleum Machinery's exquisite craftsmanship and technological innovation, aiming to provide global customers with superior performance and greater durability. Whether it's oil and gas exploration, directional drilling mud circulation, mining, or various general industrial applications, the DL1224 triplex plunger pump, with its powerful output and stable operation, is an ideal choice for you in diverse complex working conditions.

The table below summarizes the core performance parameters of the Shijiazhuang Dongli Petroleum Machinery DL1224:

These parameters collectively define the excellent quality of the DL1224 as a high-performance, high-reliability industrial pump. Its high flow output capacity makes it particularly suitable for applications requiring large displacement transfer, such as mud circulation and mine dewatering. At the same time, multiple connection options and strict adherence to design standards ensure its wide applicability and safety in various complex working conditions.

The exceptional performance and extraordinary durability of the Shijiazhuang Dongli Petroleum Machinery DL1224 triplex plunger pump stem from the precise design, high-quality material selection, and cutting-edge manufacturing processes of every component in its fluid end and power end. We understand that only through an extreme pursuit of detail can trustworthy industrial products be forged.

The fluid end is the core part of the pump that directly contacts the working medium and withstands pressure, and its design and manufacturing are directly related to the pump's overall performance and service life. Dongli Petroleum Machinery strives for excellence in the manufacturing of the DL1224's fluid end.

Fluid Cylinder (Fluid Cylinder / Valve Chamber): As the main body of the fluid end, the material selection and manufacturing process of the fluid cylinder are crucial.Material:

Standard configuration typically uses high-strength A536 GR 80-55-06 ductile iron, a material with good strength, toughness, and fatigue resistance, suitable for various standard operating conditions.

For high-pressure or corrosive media, Dongli Petroleum Machinery offers various upgraded material options, including:

Forged Carbon Steel, commonly A105 grade, providing higher strength and toughness.

Forged Stainless Steel, 316L SS, offering excellent corrosion resistance.

Duplex Stainless Steel, 2205 Duplex, combining high strength with excellent resistance to pitting and crevice corrosion.

Nickel Aluminum Bronze, CDA 958, particularly suitable for corrosive environments like seawater.

Manufacturing Process:

Ductile iron fluid cylinders are produced using a precise casting process to ensure uniform organization and dimensional accuracy.

For high-performance materials like carbon steel and stainless steel, advanced forging processes are employed. Forging not only yields a denser metal structure and optimizes grain flow but also eliminates potential defects such as shrinkage cavities and porosity in castings, thereby significantly improving the fluid cylinder's strength, toughness, and fatigue life, ensuring its safe and reliable operation even under forging fluid end rated pressures up to 10,000 psi.

After forging, the fluid cylinder undergoes precisely controlled heat treatment processes (e.g., normalizing, tempering, quenching + tempering) to achieve the optimal combination of material mechanical properties.

All critical areas of the fluid cylinder, such as valve bores, plunger bores, and flange sealing surfaces, are finished by precision machining to ensure extremely high dimensional accuracy and surface finish, laying the foundation for reliable sealing and efficient operation.

Valve Assemblies (Suction & Discharge): Valve assemblies are the heart of the pump, and their performance directly affects the pump's efficiency and reliability. The DL1224 is equipped with high-quality valve assemblies to ensure smooth one-way fluid flow.

Type: Standard configuration features efficient Disc Valves. For fluids containing abrasive particles, Abrasion-Resistant / AR Valves are strongly recommended.

Valve Seat:

Material: Typically selected from 316 stainless steel or 17-4PH stainless steel. These materials are not only corrosion-resistant but also possess sufficient hardness and wear resistance to withstand repeated impacts from the valve disc.

Manufacturing Process: Precision turning and grinding are performed to ensure high flatness of the contact surface with the valve disc and precise taper angles for tight sealing. Critical surfaces may undergo hardening treatment to extend service life.

Valve Disc/Plate:

Material: Depending on operating conditions, choices include Celcon® (polyoxymethylene), Delrin® (polyoxymethylene), 316 stainless steel, or 17-4PH stainless steel. Engineering plastics like Celcon® and Delrin® offer good wear resistance, elasticity, and chemical stability, suitable for effective sealing. Metal valve discs are more resistant to impact, high temperatures, and high-pressure differentials.

Valve Spring:

Material: To ensure rebound performance and durability under various operating conditions, valve springs are typically made of Inconel 600 or Inconel X-750 superalloys, or 316 stainless steel. Inconel alloys maintain excellent elasticity and strength even in high-temperature and corrosive environments.

Valve Cover:

Material: Usually matches or is compatible with the main fluid cylinder material, such as ductile iron, carbon steel, or stainless steel, ensuring consistent strength and pressure resistance.

Manufacturing Process: Formed by casting or forging, with precision machining of sealing surfaces and threaded connections.

Plunger: The plunger is a key reciprocating component for volumetric change and pressure generation.Material:

Solid Ceramic Plunger (design part number 604-1335). Ceramic materials (typically high-purity alumina or zirconia) possess extremely high surface hardness, excellent wear resistance, and outstanding chemical corrosion resistance, making them particularly suitable for conveying abrasive muds or corrosive fluids, significantly extending the service life of plungers and packing.

Hard Faced Stainless Steel / Hard-Co Plunger (part number 600-1335). This type of plunger uses stainless steel (300 series stainless steel) as the base material, with its working surface uniformly coated or sprayed with a special high-hardness wear-resistant alloy (Colmonoy 730) using advanced processes like plasma spraying or High-Velocity Oxygen Fuel (HVOF) spraying.

Manufacturing Process:

Ceramic Plungers: Formed from high-purity ceramic powder (zirconia ZrO2 or alumina Al2O3) by isostatic pressing, then sintered in a precisely controlled high-temperature environment to achieve a dense ceramic structure.

Hard Faced Plungers: The stainless steel substrate is first precision-machined. Subsequently, an even layer or multiple layers of specially formulated wear-resistant alloy powder are applied to the plunger's working surface using advanced thermal spraying techniques (such as plasma arc spraying or HVOF).

Liner: The DL1224 is a plunger pump, where the plunger reciprocates within the stuffing box. If configured as a piston pump, liners would be used. For the DL1224 plunger pump, the corresponding components are the stuffing box body and the plunger itself. A 3-inch ceramic liner (part numbers 176000 / 3269116, 200-2413 design) is typically used in piston pumps or as a guide and protective structure for plungers. These ceramic liners usually feature a zirconia or high-chrome alloy inner lining, with a steel outer jacket, fixed by precise fit or shrink-fitting, and an inner surface that is precisely ground and polished.

Packing/Seals: Reliable sealing is crucial for ensuring pump efficiency and preventing leakage.

Material: The DL1224 standard uses V-ring packing woven from a composite of Kevlar® (aramid fiber) and Teflon® (PTFE polytetrafluoroethylene). Kevlar® fibers provide the packing with extremely high mechanical strength and wear resistance, while Teflon® offers excellent self-lubrication, a low coefficient of friction, and broad chemical corrosion resistance. Depending on the specific application, seals made of materials like Nitrile Butadiene Rubber (NBR) and Hydrogenated Nitrile Butrile Rubber (HNBR) may also be chosen.

Manufacturing Process: High-quality Kevlar® and Teflon® fibers are selected and processed using specific weaving techniques (e.g., multi-layer weaving, braided corner reinforcement) to create preformed V-rings or other specific shapes of sealing elements. Subsequently, these braided packing rings undergo a precise molding and vulcanization process to ensure accurate dimensions, uniform density, and stable structure. This manufacturing method allows the packing to automatically compensate for wear by relying on fluid pressure or spring pre-tensioning after installation in the stuffing box, maintaining effective dynamic sealing over time.

Suction/Discharge Flanges:

Material: Generally consistent with the fluid cylinder body material or highly weld-compatible, such as carbon steel and stainless steel, to ensure connection strength and corrosion resistance.

Type and Rating: The suction port is typically a 3-inch NPT thread or a 3-inch flange connection. The DL1224's discharge port is standard configured with a 2-inch NPT thread or a more reliable 2-inch 1500# RTJ (Ring Type Joint) Flange.

Manufacturing Process: Flanges are typically formed by forging, or cut from standard-compliant thick steel plates.

Power End – Guarantee of Lasting Power

The power end is the "heart" and "skeleton" of the pump, responsible for smoothly and efficiently converting the rotational motion of the drive unit into the reciprocating linear motion of the plunger, providing continuous and stable power input to the fluid end. The Dongli DL1224's power end is robustly designed to ensure long-term, trouble-free operation.

Frame/Crankcase (Power Frame / Crankcase):

Material: The main body uses high-strength A48 Class 30 gray cast iron or high-quality ductile iron. These materials have excellent vibration absorption properties, effectively reducing operating noise and vibration; they also possess sufficient structural rigidity to ensure the relative positional accuracy of moving parts under high loads.

Manufacturing Process: Produced using a precision casting process to ensure dense internal structure and no defects. Bearing bores, crosshead guide surfaces, and connection surfaces with other components are precisely bored or ground to ensure assembly accuracy and smooth movement.

Crankshaft:

Material: Typically high-grade A536 GR 100-70-03 ductile iron, or forged alloy steel for higher load applications. Ductile iron offers good overall mechanical properties, including high strength, good toughness, and excellent wear resistance.

Manufacturing Process: Ductile iron crankshafts are precision cast and then undergo necessary heat treatments (e.g., normalizing, quenching and tempering) to optimize their microstructure and mechanical properties. The DL1224 features a Double Ended Shaft Extension design, providing users with flexible drive unit arrangement options (power can be input from either end).

Connecting Rod:

Material: Typically A536 GR 80-55-06 ductile iron or forged steel. These materials can withstand alternating loads generated by the reciprocating motion of the plunger.

Manufacturing Process: Formed by casting or die forging to ensure sufficient strength and rigidity of the connecting rod.

Crosshead:

Material: Generally uses wear-resistant A48 Class 30 gray cast iron or other special wear-resistant cast iron/steel.

Manufacturing Process: Formed by casting. The guiding surfaces of the crosshead (mating with the frame guides) and the crosshead pin bore are precisely machined and ground to ensure accurate guiding and smooth movement during reciprocation, minimizing friction and wear.

Main Bearings:

Type: The main bearings on both sides of the power end are heavy-duty Steel-Tapered Roller Type bearings.

Manufacturing Process: Made from high-quality bearing steel through a series of complex processes including precision forging, heat treatment, and grinding, ensuring high precision, high load-carrying capacity, and long service life.

Lubrication System:

Standard Configuration: Employs a simple and reliable splash lubrication system with gravity return. As the crankshaft rotates, the big end of the connecting rod throws the lubricant in the crankcase, splashing it onto the surfaces of various moving parts (such as bearings, crosshead guides, gears, etc.) to form an oil film for lubrication.

Optional Configuration: For demanding conditions with higher speeds, heavy loads, or elevated ambient temperatures, an optional pressure lubrication system, driven by an independent motor-driven oil pump, can be selected.

Recommended Lubricant (Lube Oil): High-quality lubricant of SAE 30 grade.

Oil Capacity: Crankcase oil capacity is approximately 3 gallons (about 12 quarts).

The following tables summarize the material and manufacturing process highlights of the key components of the Dongli DL1224 fluid end and power end:

The standardization and serialization of parts (such as interchangeable plungers based on the M12 series, and some power end components usable with M12 and other series basic designs) provide users with a more convenient maintenance experience and optimized spare parts management costs.

To ensure that the Shijiazhuang Dongli Petroleum Machinery Co., Ltd. DL1224 triplex plunger pump delivers optimal performance and long-lasting durability in various specific applications, Dongli Petroleum Machinery offers a range of meticulously designed and rigorously manufactured high-quality standard and optional accessories. All accessories utilize selected materials and precise manufacturing processes to guarantee their perfect compatibility with the main pump, outstanding durability, and reliable performance.

Valve Assemblies (Suction & Discharge): As core components of the pump, their importance has been detailed in the fluid end section. Briefly reiterated, valve seats are typically made of 316 stainless steel or 17-4PH stainless steel, valve discs can be selected from Celcon®, Delrin®, or equivalent stainless steel, and springs are made of advanced alloys such as Inconel or 316 stainless steel. These components are precisely machined and undergo necessary heat treatment to ensure sealing and durability under harsh conditions. Standardized wear-resistant valve assemblies, such as designs based on P538350 (discharge AR valve assembly) and P533509 (suction AR valve assembly), are widely applicable to M12 series basic designs, providing users with reliable wear part replacement options.

Plunger Packing Kits: The performance of the packing directly affects the pump's sealing effect and operating efficiency.

Material: The DL1224 packing kit primarily consists of high-performance V-type sealing rings woven from a composite of Kevlar® (aramid fiber) and Teflon® (PTFE polytetrafluoroethylene). Kevlar® fibers provide excellent mechanical strength and wear resistance, while Teflon® gives the packing superior self-lubrication, extremely low friction coefficient, and broad chemical corrosion resistance. Depending on fluid characteristics and operating temperature, elastomeric materials such as Nitrile Butadiene Rubber (NBR) and Hydrogenated Nitrile Butadiene Rubber (HNBR) may also be chosen.

Manufacturing Process: Top-quality Kevlar®, Teflon®, and other raw material fibers are selected and processed using advanced multi-layer weaving or braided corner reinforcement techniques to create preformed packing rings with specific cross-sectional shapes (typically V-shaped). Subsequently, these braided packing rings undergo a precise molding and compression process to ensure accurate dimensions, uniform density, and stable structure. This manufacturing method allows the packing, once installed in the stuffing box, to rely on media pressure or spring pre-tension to automatically compensate for wear, maintaining effective dynamic sealing over time.

Related Part Numbers/Information: While specific part numbers for the DL1224's 3-inch plunger packing kit are not directly listed in the current documentation, packing materials for M12 series pumps generally utilize a Kevlar® and Teflon® combination. Packing kit compositions for other pump models typically include several V-rings, pressure rings, and support rings to form a complete sealing system.

Liner: (As mentioned earlier, the DL1224 is a plunger pump; liners are mainly used in piston pumps within the FMC series. The 3-inch ceramic liner mentioned here (based on part numbers 176000 / 3269116, 200-2413 design) can serve as a guide for plungers in plunger pumps or be used in specific configurations).

Material: The inner lining uses high-purity ceramic (such as zirconia or alumina), with a high-strength steel jacket on the outside. A high-chrome alloy lining can also be selected.

Manufacturing Process: The ceramic inner lining is formed by isostatic pressing, high-temperature sintering, and then precisely ground and polished to an extremely high surface finish for optimal wear resistance and minimum friction. The steel outer casing provides structural support and is tightly combined with the ceramic inner lining through precise fitting or shrink-fitting.

Gaskets & O-Rings: These seemingly minor components are crucial for preventing internal and external leakage of the pump.

Material:

Gaskets: Depending on the application location and contact media, gasket materials can be non-asbestos sheet, Teflon® (PTFE), or other specialty synthetic rubbers compatible with the fluid. For example, crankcase rear cover gaskets (based on part number 5262847 design) and bearing housing gaskets (based on part number 5262848 design) typically use oil-resistant and temperature-resistant materials.

O-rings: Material selection is broader, including Teflon® (PTFE), Viton® (fluoroelastomer), NBR (nitrile rubber), EPDM (ethylene propylene diene monomer rubber), and HNBR (hydrogenated nitrile butadiene rubber). Material selection primarily depends on the chemical compatibility of the medium, the operating temperature range, and the pressure rating. For example, valve cover O-rings (based on part number 176400 / 3268117 design) and liner O-rings (based on part number 176200 / 320315 design).

Manufacturing Process: Gaskets are formed by die-cutting or precision machining. O-rings are manufactured using a precision compression molding and vulcanization process to ensure accurate dimensions, smooth surfaces, and no defects, thereby forming reliable static or dynamic seals after assembly.

With its robust design, reliable and stable performance, and highly customizable configurations achieved through different material and accessory combinations, the Shijiazhuang Dongli Petroleum Machinery Co., Ltd.'s DL1224 series triplex plunger pump (upgraded based on the FMC M1224 platform) has demonstrated wide application potential in various demanding industrial fields globally.

Oil & Gas: This is one of Dongli Pump's core application areas.

Drilling Mud Circulation: The DL1224, with its powerful flow output and ability to handle abrasive mud, is an ideal mud pump choice for medium to shallow well drilling operations. Its wear-resistant fluid end components (e.g., ceramic plungers, AR valves) ensure long-lasting and efficient operation in harsh drilling environments.

Well Service: Can be used for fluid pumping in auxiliary operations such as cementing and acidizing. While the DL1224 itself may not be the primary pump for large fracturing operations, its reliability makes it perform exceptionally well in supporting services.

Water Disposal / Injection: Treatment and formation reinjection of produced water from oilfields are common environmental and enhanced recovery measures. The DL1224 is capable of handling the pumping tasks for such oily wastewater or treated clean water.

Crude Transfer: Within collection and transportation systems or processing stations, the DL1224 can be used for short-to-medium distance, medium-to-low pressure crude oil transfer.

BOP Charging: Wellhead Blowout Preventer (BOP) hydraulic control systems require a reliable pressure source, and the DL1224 can provide stable hydraulic power for this.

Horizontal Directional Drilling (HDD): In trenchless pipeline laying, HDD mud pumps play a crucial role. Dongli Petroleum Machinery's pumps are one of the preferred brands in this field. The DL1224's wear-resistant design, ability to handle high solids content drilling fluid, and stable flow output make it very suitable for HDD conditions.

Mining: Mining environments are harsh, requiring extremely high durability from equipment.

Mine Dewatering: Timely removal of accumulated water in mines is a prerequisite for ensuring safe mining operations, and the DL1224's high flow characteristic enables it to efficiently complete dewatering tasks.

Mine-dust Suppression: By spraying water mist to reduce dust concentration in the working area and improve the working environment, the DL1224 can provide stable water pressure for this purpose.

Slurries/Tailings Transport: Mineral slurries or tailings generated after beneficiation need to be pumped to designated locations. The DL1224, if configured with a wear-resistant fluid end, can handle the transfer of such abrasive fluids.

Core Drilling: In geological exploration core drilling, flushing fluid needs to be pumped, and FMC-designed pumps are also applied in this field.

General Industrial: The versatility of the DL1224 allows it to serve numerous general industrial processes.

High-pressure Washdown: For cleaning large equipment, factory floors, etc., the DL1224 can provide the required high-pressure water jet.

Descaling: Uses high-pressure water to remove mill scale, rust layers, or fouling from metal surfaces.

Hydrostatic Testing: For pressure testing pipelines, vessels, and other pressure-bearing equipment, the DL1224 can serve as a reliable pressure source.

Steam Boiler Feed: Provides feedwater for medium to low-pressure boilers.

Machine Tool Coolant: Circulates cooling lubricant during metal processing.

Reverse Osmosis (RO): Dongli Petroleum Machinery can provide pumps of specific materials (e.g., stainless steel, duplex stainless steel fluid ends) for reverse osmosis applications. If suitable corrosion-resistant materials are selected, the DL1224 can also be used in the pretreatment or feed water stages of certain industrial-grade reverse osmosis systems.

Municipal Engineering:

Sewer Cleaning Pumps: Uses high-pressure water jets to clear accumulated sludge and blockages in sewer networks. FMC-designed pumps also have application examples in this field.

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