Model :
DS-70Type :
Plunger PumpStroke :
3.0 Inches / 75 mmCylinder Diameter :
12-21mmFlow :
2.5-32LPM/0.66-8.4GPMPressure :
280MPaShipping Port :
Shanghai Port, ChinaWarranty :
12 MonthsThe DS-70 pump is a single-acting triplex reciprocating plunger pump independently designed, developed, and manufactured by our company, incorporating advanced domestic and international technologies. It offers customizable liquid end and power end designs with various materials and structural configurations to accommodate different medium compositions in application scenarios. Multiple structural options are available, including built-in reduction gear or external gearbox configurations.
Configurable forced lubrication system, oil temperature alarm, oil pressure alarm, flow/pressure monitoring, and vibration-sensing intelligent feedback unattended operation system. Available with hydraulic, electric motor, or diesel engine drive options.
Specifications:
| Design Standard | API-674, Third Edition |
| Configuration | Horizontal Triplex Plunger |
| Number of Plungers | 3 |
| Continuous Duty | 74 BHP |
| Intermittent Duty | 100 BHP |
| Stroke Length | 3.0 Inches / 75 mm |
| Frame Load Rating | 6974 lbs / 3170 kg |
| Pump Weight (Average) | 770 lbs / 350 kg |
| Intermittent Duty Speed Rating | 400 RPM |
| Continuous Duty Speed Rating | 350 RPM |
| Minimum Speed | 100 RPM |
| Mechanical Efficiency | 90% |
| Lubrication System | Splash, Gravity Return |
| Crankcase Oil Capacity | 38 Gallons / 143.83 L |
| Lube Oil Type | SAE30 |
| Fluid Temperature Range | -20~350°F/-28~176°C |
| Valve Type | Disc Valve / Wear-resistant Valve |
Performance Data (Metric):
| Pump Model |
Plunger Diameter (mm) |
Displacement (L/REV) |
Maximum Pressure (MPa) |
Pump Capacity (LPM)@Input Speed (RPM) | |||||
| 100 | 200 | 300 | 330 | 500 | 600 | ||||
| DS7001 | 12 | 0.025 | 280 | 2.5 | 5 | 7.7 | 8.4 | 8.9 | 10.2 |
| DS7002 | 13.5 | 0.032 | 220 | 3.4 | 6.4 | 10.2 | 11.3 | 11.9 | 13 |
| DS7003 | 15 | 0.0397 | 180 | 4.2 | 8.4 | 12.5 | 13.6 | 14.8 | 16 |
| DS7004 | 16.5 | 0.047 | 150 | 4.8 | 9.6 | 14 | 15.9 | 16.7 | 19 |
| DS7005 | 18.5 | 0.059 | 120 | 6 | 12.1 | 18.2 | 20 | 21.2 | 24 |
| DS7006 | 21 | 0.079 | 90 | 8 | 15.5 | 23.5 | 25 | 27.3 | 32 |
Performance Data:
| Pump Model |
Plunger Diameter (in) |
Displacement (GAL/REV) |
Maximum Pressure (PSI) |
Pump Capacity (GPM)@Input Speed (RPM) | |||||
| 100 | 200 | 300 | 330 | 500 | 600 | ||||
| DS7001 | 0.48 | 0.00675 | 40600 | 0.66 | 1.32 | 2.04 | 2.22 | 2.34 | 2.7 |
| DS7002 | 0.54 | 0.00855 | 31900 | 0.9 | 1.7 | 2.7 | 2.97 | 3.15 | 3.42 |
| DS7003 | 0.6 | 0.0105 | 26100 | 1.1 | 2.2 | 3.3 | 3.6 | 3.9 | 4.2 |
| DS7004 | 0.66 | 0.0126 | 21750 | 1.26 | 2.52 | 3.78 | 4.2 | 4.4 | 5.04 |
| DS7005 | 0.74 | 0.01575 | 17400 | 1.6 | 3.2 | 4.8 | 5.3 | 5.6 | 6.3 |
| DS7006 | 0.84 | 0.021 | 13050 | 2.1 | 4.1 | 6.2 | 6.8 | 7.2 | 8.4 |
Standard connection sizes:
| Pump Model | Suction (in) | Discharge(in) |
| DS7001 | 0.65 | 0.28 |
| DS7002 | 0.72 | 0.3 |
| DS7003 | 0.8 | 0.33 |
| DS7004 | 0.9 | 0.36 |
| DS7005 | 1 | 0.4 |
| DS7006 | 1.1 | 0.5 |
Fluid cylinder materials:
| Fluid cylinder materials | Cast |
| Carbon Steel | N/A |
| Fluid cylinder materials | |
| 304 / 316L / 17-4PH / 2205 / 2507 Stainless Steel |
*Special materials are available upon request


Function
Reverse osmosis pumps play a crucial role in water purification systems. They not only provide the necessary driving force for the entire system but also directly impact the quality and efficiency of the treated water output. Through their high pressure output capability, reverse osmosis pumps ensure water molecules pass through the membrane elements with sufficient pressure, enabling effective filtration of impurities, dissolved salts, and microorganisms. In seawater desalination, the reverse osmosis pump is particularly critical. By maintaining a stable high-pressure environment, it enables efficient desalination of seawater to produce compliant freshwater. The pump's performance directly determines desalination capacity and water quality, making its reliability and efficiency indispensable, especially in large-scale projects. Furthermore, in industrial water treatment, reverse osmosis pumps help eliminate harmful substances from water, ensuring safe water usage in production processes while reducing equipment wear caused by poor water quality. In residential and commercial applications, these pumps optimize the operation of water purification systems, enhancing the purity and taste of drinking water to deliver a healthier lifestyle experience. This process ensures the final purified water meets stringent sanitary standards, fulfilling users' demand for high-quality drinking water.
Engineering dimensional outline

Company Profile
Elephant Machinery have workshops for raw material cutting, welding, metalworking, assembly, and painting. We have more than 100 sets of production equipment. Our annual output reaches 5,000 reciprocating pumps.From the external housing to the internal components, we insist on independent processing to ensure that every link is controllable and traceable. Nanjing Marketing Center has professional domestic sales, foreign trade and market teams. We actively participate in various exhibitions, communicate with domestic and foreign customers, and work together to expand the market. After-sales service starts from the date of order delivery and lasts until the service life of the equipment. In the domestic market, we have established cooperative relationships with leading enterprises in the oil and gas industry, including CNPC, Sinopec, CNOOC, ZPEC , SJ Serva, KERUI, and Xindi Energy. Additionally, we have collaborated with BOMCO to develop intelligent unmanned systems for oilfield applications. In the global market, we have forged valuable partnerships with national oil and pipeline companies such as SPC, KPC and BAPCO, as well as numerous distributors. These distributors have adopted our reciprocating pumps in oilfields across the Middle East, Russia, Africa, and South America. Meanwhile, we are working with SERTECPET, a leading oil & gas equipment company in South America, to jointly develop unmanned pump skids for water injection.