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DW-800 Chemical Injection Quintuplex Plunger Pump

DW-800 Chemical Injection Quintuplex Plunger Pump

The DW-800 pump is a single acting quintuplex reciprocating plunger pump.
  • Model :

    DW-800
  • Type :

    Plunger Pump
  • Stroke :

    7.0 Inches / 177.8 mm
  • Cylinder Diameter :

    44-159mm
  • Flow :

    136.3-5280.1LPM/36-1395GPM
  • Pressure :

    6-69MPa
  • Shipping Port :

    Shanghai Port, China
  • Warranty :

    12 Months

Specifications:

Design Standard API-674, Third Edition
Configuration   Horizontal quintuple Plunger
Number of Plungers 5
Continuous Duty 650 BHP
Intermittent Duty 800 BHP
Stroke Length 7.0 Inches / 177.8 mm
Frame Load Rating  27,500 lbs / 12474 kg
Pump Weight (Average) 13,000 lbs / 5896.8 kg
Intermittent Duty Speed Rating  300 RPM
Continuous Duty Speed Rating 240 RPM
Minimum Speed 100 RPM
Mechanical Efficiency  90%
Lubrication System Splash, Gravity Return
Lubrication System (Optional) Pressurized
Crankcase Oil Capacity  38 Gallons / 143.83 L
Lube Oil Type  SAE 30
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)
100 150 200 240 250 300
DW80014 44 1.3793  69 136.3  208.2  276.3  329.3  344.4  412.6 
DW80016 51 1.8017  60 181.7  268.7  359.6  431.5  450.4  541.3 
DW80018 57 2.2801  48 227.1  340.7  454.2  548.8  571.5  685.1 
DW80020 64 2.8149 39 280.1 423.9 564 673.7 704 844.1
DW80022 70 3.4061 32 340.7 511 681.3 817.6 851.6 1022
DW80024 76 4.0537 27 405 609.4 810 972.7 1014.4 1215
DW80026 83 4.7574 23 476.9 715.4 950 1143.1 1188.5 1426.9
DW80028 89 5.5174 20 552.6 828.9 1105.2 1324.8 1377.7 1654
DW80030 95 6.3338 17 632.1 950 1268 1521.6 1582.1 1900.1
DW80032 102 7.2066 15 719.2 1082.5 1442.1 1729.7 1801.7 2161.2
DW80034 108 8.1355 13 813.8 1218.8 1627.6 1953.1 2032.5 2441.3
DW80036 114 9.1207 12 912.2 1366.4 1824.4 2187.7 2278.6 2736.6
DW80038 121 10.1623 11 1014.4 1525.4 2032.5 2437.5 2539.7 3046.9
DW80040 127 11.2604 10 1124.1 1688.1 2252.1 2702.5 2816 3376.2
DW80042 133 12.4144  9 1241.5  1862.2  2483.0  2978.8  3103.7  3724.4 
DW80044 140 13.6249  8 1362.6  2043.9  2725.2  3270.2  3406.5  4087.8 
DW80046 146 14.8917  7 1487.5  2233.2  2978.8 3573.0  3724.4  4466.3 
DW80048 152 16.2149  7 1620.0  2433.8  3243.7  3891.0  4053.7  4863.7 
DW80050 159 17.5942 6 1760 2638.1  3520.1  4224.1  4398.2  5280.1 

 

Performance Data:

Pump
Model
Plunger
Diameter
(in)
Displacement
(GAL/REV)
Maximum
Pressure
 (PSI)
Pump Capacity (GPM)@Input Speed (RPM)
100 150 200 240 250 300
DW80014 1.75 0.3644 10000 36 55 73 87 91 109
DW80016 2 0.476 8750 48 71 95 114 119 143
DW80018 2.25 0.6024 6920 60 90 120 145 151 181
DW80020 2.5 0.7437 5600 74 112 149 178 186 223
DW80022 2.75 0.8999 4630 90 135 180 216 225 270
DW80024 3 1.071 3890 107 161 214 257 268 321
DW80026 3.25 1.2569 3310 126 189 251 302 314 377
DW80028 3.5 1.4577 2860 146 219 292 350 364 437
DW80030 3.75 1.6734 2490 167 251 335 402 418 502
DW80032 4 1.904 2190 190 286 381 457 476 571
DW80034 4.25 2.1494 1940 215 322 430 516 537 645
DW80036 4.5 2.4097 1730 241 361 482 578 602 723
DW80038 4.75 2.6849 1550 268 403 537 644 671 805
DW80040 5 2.975 1400 297 446 595 714 744 892
DW80042 5.25 3.2799 1270 328 492 656 787 820 984
DW80044 5.5 3.5997 1160 360 540 720 864 900 1080
DW80046 5.75 3.9344 1060 393 590 787 944 984 1180
DW80048 6 4.284 970 428 643 857 1028 1071 1285
DW80050 6.25 4.6484 900 465 697 930 1116 1162 1395

 

Standard connection sizes:      

Pump Model Suction (in) Discharge(in)
DW80014-DW80020 4.0 3.0
DW80014-DW80024 6.0 3.0
DW80026-DW80036 8.0 4.0
DW80038-DW80042 10.0 6.0
DW80044-DW80050 12.0 6.0

 

Fluid cylinder materials:

 Fluid cylinder materials  Cast
Carbon Steel  N/A
Hi-Strength Carbon Alloy Steel
304 / 316L / 17-4PH / 2205 / 2507 Stainless Steel

                                                                                 *Special materials are available upon request

                

                                    

 

Engineering dimensional outline

                                                                                                                    

 

 

FAQ

1. What is a chemical injection pump?

 

A chemical injection pump is a specialized device designed for transporting chemical agents, widely used in fluid management systems across industrial sectors. Its primary function is to deliver various chemical media to designated locations with precise control over flow rate and pressure, meeting the demands of production processes. These pumps typically feature high-precision adjustment capabilities, adapting to complex requirements under diverse operating conditions while ensuring safety and stability throughout the delivery process. Chemical injection pumps are engineered for durability and reliability, manufactured with premium materials and advanced technology to withstand prolonged operation in high-pressure, high-temperature, or highly corrosive environments without damage. Furthermore, modern chemical injection pumps integrate intelligent monitoring systems that collect real-time operational data and provide equipment status feedback, offering users convenient operation and efficient maintenance support. These characteristics make chemical injection pumps indispensable critical equipment across numerous industries, particularly excelling in scenarios requiring strict control over chemical agent injection volumes.

 

2. Why does flow instability occur in chemical injection pumps?

This may be due to wear on internal valves or seals, causing restricted flow or leakage of the medium. Additionally, impurities in the medium can clog pipelines, affecting flow uniformity. Improper pump operating parameters—such as inaccurate pressure regulation or unreasonable frequency settings—can also trigger flow fluctuations. In certain cases, external environmental changes—such as significant fluctuations in temperature or pressure—can also disrupt pump performance. Therefore, regular equipment inspections, optimized operating conditions, and ensuring medium cleanliness are key measures to address flow instability issues.

 

3. How to determine if seals need replacement?

When seals exhibit noticeable wear, cracks, or deformation, it typically indicates degraded performance requiring prompt replacement. Additionally, pump leakage or compromised purity and quality of the medium may signal seal failure. During routine maintenance, assess the seal's condition by observing whether its elasticity has diminished or its surface has hardened. Simultaneously, document the equipment's operating hours and usage frequency. Combining this data with the manufacturer's recommended service life reference values can help predict the optimal replacement timing. Conducting regular pressure tests and seal performance inspections enables more accurate evaluation of the seal's operational status, thereby preventing equipment failures or production interruptions caused by sealing issues.

 

4. What causes pressure fluctuations?

Pressure fluctuations may stem from wear or damage to internal pump components. Aging of critical parts such as pistons and seals can lead to uneven pressure transmission. Additionally, changes in the physical properties of the medium—such as fluctuations in viscosity, temperature, or gas content—can also impact pressure stability. Improper pipeline system design or issues like blockages and leaks may similarly trigger abnormal pressure fluctuations. Improper equipment operating parameters, such as excessive frequency adjustments or pressure ranges exceeding the pump's design capacity, can similarly cause pressure instability. To minimize pressure fluctuations, it is recommended to conduct regular inspections of the pump body and piping condition, optimize the medium processing workflow, and utilize intelligent monitoring systems to adjust operating parameters in real-time, ensuring the equipment operates under optimal conditions.

 

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