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DS-77 Triplex Reverse Osmosis Water Booster Pump

DS-77 Triplex Reverse Osmosis Water Booster Pump

The DS-77 pump is a single acting triplex reciprocating plunger pump.
  • Model :

    DS-77
  • Type :

    Plunger Pump
  • Stroke :

    3.0 Inches / 76.2 mm
  • Cylinder Diameter :

    22-76mm
  • Flow :

    8.7-522.3LPM/2.3-138GPM
  • Pressure :

    6-69MPa
  • Shipping Port :

    Shanghai Port, China
  • Warranty :

    12 Months

Specifications:

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

The advantages of reverse osmosis pumps lie in their versatility and adaptability. First, they can flexibly handle varying water quality conditions, performing excellently whether treating sources with high concentrations of dissolved solids or relatively clean tap water. Second, its compact structure occupies minimal space, making it ideal for installation in equipment with limited room, such as household water purifiers or small commercial systems. Additionally, reverse osmosis pumps are simple to operate, requiring no complex training for users to master their use. Maintenance costs are also low, thanks to durable materials and modular design, which make replacing parts both convenient and economical. Finally, the pump's environmental credentials are noteworthy. Its high energy efficiency ratio and wastewater reduction design make it a vital component in sustainable water treatment solutions. Collectively, these advantages make reverse osmosis pumps highly favored across diverse application scenarios.

 

Core Function

The reverse osmosis pump serves as the “heart” of a reverse osmosis water purification system, playing a crucial role throughout the entire purification process. This specially designed pump generates a continuous, stable high-pressure water flow, providing the necessary driving force for the reverse osmosis process. Its core function lies in producing sufficient water pressure to effectively propel the feedwater across the surface of the reverse osmosis membrane at a specific flow rate. During this process, the high-pressure water flow forces water molecules through the membrane's microscopic pores, while impurities such as dissolved solids and heavy metal ions are blocked by the membrane. This achieves deep purification of the water, producing purified water that meets drinking standards. It can be said that the performance of the reverse osmosis pump directly determines the filtration efficiency and output water quality of the entire purification system.

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