Model :
DS-77Type :
Plunger PumpStroke :
3.0 Inches / 76.2 mmCylinder Diameter :
22-76mmFlow :
8.7-522.3LPM/2.3-138GPMPressure :
6-69MPaShipping Port :
Shanghai Port, ChinaWarranty :
12 MonthsSpecifications:
| Design Standard | API-674, Third Edition |
| Configuration | Horizontal Triplex Plunger |
| Number of Plungers | 3 |
| Continuous Duty | 62 BHP |
| Intermittent Duty | 77 BHP |
| Stroke Length | 3.0 Inches / 76.2 mm |
| Frame Load Rating | 6,000 lbs / 2721.6 kg |
| Pump Weight (Average) | 950 lbs / 430.92 kg |
| Intermittent Duty Speed Rating | 500 RPM |
| Continuous Duty Speed Rating | 400 RPM |
| Minimum Speed | 100 RPM |
| Mechanical Efficiency | 90% |
| Lubrication System | Splash, Gravity Return |
| Lubrication System (Optional) | 3.25 Gallons / 12.0 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 | 350 | 400 | 450 | 500 | ||||
| DS7707 | 22 | 0.0886 | 69 | 8.7 | 17.8 | 26.5 | 31.0 | 35.6 | 39.7 | 44.3 |
| DS7708 | 25 | 0.1158 | 52 | 11.7 | 23.1 | 34.8 | 40.5 | 46.2 | 52.2 | 57.9 |
| DS7710 | 32 | 0.1809 | 34 | 18.2 | 36.3 | 54.1 | 63.2 | 72.3 | 81.4 | 90.5 |
| DS7712 | 38 | 0.2604 | 23 | 26.1 | 52.2 | 78 | 91.2 | 104.1 | 117.3 | 130.2 |
| DS7714 | 44 | 0.3547 | 17 | 35.6 | 70.8 | 106.4 | 124.1 | 141.9 | 159.7 | 177.5 |
| DS7716 | 51 | 0.4633 | 13 | 46.2 | 92.7 | 138.9 | 162 | 185.5 | 208.6 | 231.6 |
| DS7718 | 57 | 0.5863 | 10 | 58.7 | 117.3 | 176.0 | 205.1 | 234.7 | 263.8 | 293.3 |
| DS7720 | 64 | 0.7237 | 9 | 72.3 | 144.6 | 217.3 | 253.2 | 289.6 | 325.5 | 361.8 |
| DS7722 | 70 | 0.8758 | 7 | 87.4 | 175.2 | 262.7 | 306.6 | 350.5 | 393.6 | 439.1 |
| DS7724 | 76 | 1.0424 | 6 | 104.1 | 208.6 | 312.6 | 364.9 | 416.4 | 469.3 | 522.3 |
Performance Data:
| Pump Model |
Plunger Diameter (in) |
Displacement (GAL/REV) |
Maximum Pressure (PSI) |
Pump Capacity (GPM)@Input Speed (RPM) | ||||||
| 100 | 200 | 300 | 350 | 400 | 450 | 500 | ||||
| DS7707 | 0.875 | 0.0234 | 10,000 | 2.3 | 4.7 | 7 | 8.2 | 9.4 | 10.5 | 11.7 |
| DS7708 | 1 | 0.0306 | 7,600 | 3.1 | 6.1 | 9.2 | 10.7 | 12.2 | 13.8 | 15.3 |
| DS7710 | 1.25 | 0.0478 | 4,900 | 4.8 | 9.6 | 14.3 | 16.7 | 19.1 | 21.5 | 23.9 |
| DS7712 | 1.5 | 0.0688 | 3,400 | 6.9 | 13.8 | 20.6 | 24.1 | 27.5 | 31 | 34.4 |
| DS7714 | 1.75 | 0.0937 | 2,500 | 9.4 | 18.7 | 28.1 | 32.8 | 37.5 | 42.2 | 46.9 |
| DS7716 | 2 | 0.1224 | 1,900 | 12.2 | 24.5 | 36.7 | 42.8 | 49 | 55.1 | 61.2 |
| DS7718 | 2.25 | 0.1549 | 1,500 | 15.5 | 31 | 46.5 | 54.2 | 62 | 69.7 | 77.5 |
| DS7720 | 2.5 | 0.1912 | 1,250 | 19.1 | 38.2 | 57.4 | 66.9 | 76.5 | 86 | 95.6 |
| DS7722 | 2.75 | 0.2314 | 1,000 | 23.1 | 46.3 | 69.4 | 81 | 92.6 | 104 | 116 |
| DS7724 | 3 | 0.2754 | 850 | 27.5 | 55.1 | 82.6 | 96.4 | 110 | 124 | 138 |
Standard connection sizes:
| Pump Model | Suction (in) | Discharge (in) |
| DS7707-DS7711 | 2.0 | 1.0 |
| DS7709-DS7716 | 3.0 | 1.5 |
| DS7712-DS7726 | 3.0 | 2.0 |
Fluid cylinder materials:
| Fluid cylinder materials | Cast |
| Carbon Steel | Ductile Iron |
| Hi-Strength Carbon Alloy Steel | Aluminum Bronze |
| 304 / 316L / 17-4PH / 2205 / 2507 Stainless Steel | |
*Special materials are available upon request

Engineering dimensional outline

Advantages
Chemical injection pumps demonstrate numerous significant advantages in practical applications. First, their highly efficient operating mode substantially boosts production efficiency while reducing energy consumption, delivering considerable economic benefits to users. Second, these pumps exhibit exceptional adaptability, maintaining stable performance output under extreme temperature conditions or when handling high-viscosity media. Furthermore, their modular design facilitates equipment upgrades and functional expansions, meeting diverse industries' demand for customized solutions.
Another key advantage lies in their advanced intelligence. Modern chemical injection pumps typically incorporate sophisticated control systems enabling remote monitoring and automated operation, thereby reducing the frequency of manual intervention and associated operational risks. Simultaneously, real-time data collection and analysis capabilities provide reliable insights for optimizing production processes and developing maintenance schedules. Collectively, these features form the core competitive edge of chemical injection pumps in industrial applications.
Core Function
