Product Description
Both the concentrated solution pump and the negative pressure pump are external gear pumps. The compact design features a pump body diameter of approximately 40mm, with gears measuring around 15mm in diameter. Constructed entirely from robust 316L stainless steel, the pumps are ideal for managing the electrolyte-rich and corrosive dialysate. The gears, crafted from food-grade PEEK material, offer exceptional corrosion and wear resistance, ensuring uninterrupted and efficient fluid delivery.
The dialysate's maximum flow rate is capped at 500mL/min, equivalent to 30L/h, with stringent flow stability requirements. The gear pump boasts a maximum design flow rate of 1.5L/min and can operate at pressures up to 6 bar, offering reliable performance under demanding conditions.
JONSN micro small flow pump The micro small flow pump is a high-precision metering pump engineered for exacting applications in analysis, diagnostics, and medical technologies. Our extensive experience and professional expertise enable us to innovate solutions for diverse medical equipment, whether in hemodialysis, diagnostics, cooling systems, or pure water applications. Our dedicated team at Jonsn (Ganzhou) Fluid Technology Co., Ltd. is committed to pioneering pump solutions that enhance patient care, offering hope and improving quality of life.
Working Principle
Product Parameters
- Flow Range: 0.001 - 1.5 l/m. Experience precise fluid control with a versatile range that caters to your most demanding needs.
- Pressure: -0.9-6 bar. Engineered to withstand various pressures, ensuring reliable operation even under rigorous conditions.
- Temperature: -20-160°C (customizable to other temperatures). Adapt to extreme temperatures with our customizable options, ensuring seamless performance in diverse environments.
- Viscosity Range: 0.4-3000 cps. Efficiently handle fluids of varying viscosities, making our pump suitable for a wide array of applications.
- Max. Gravity: 1.8. Robust design accommodating fluids with high specific gravity, ensuring dependability in all operations.
- Motor Options: Choose from AC motor, Brushless DC motor, Servo motor, and Inverter explosion-proof motor to suit your specific application requirements.
- Inlet & Outlet Thread: NPT1/8", 1/4", 3/8", 1/2", 3/4". Versatile threading options for easy integration into your existing systems.
- Non-standard Customization: OEM machine ancillary, and servo system. Tailor your equipment with our bespoke customization services to meet your unique operational needs.
Secure Features & Advantages
Exploded View:
- Pulsation-Free Precision Delivery: Delivery Precision Less Than 0.5%
- Powerful Vacuum Suction, High Pressure, and Seamless Delivery
- Absolute Zero Leakage - Magnetic drive coupled with a static O-ring ensures the internal pump medium remains isolated from external elements.
- Exemplary Workmanship and Material Design - Advanced gear shaft optimization, specialized pump body flow channels, lean manufacturing principles, cutting-edge processing technology, and superb craftsmanship significantly extend service life for high-end applications.
- Specialized Model Selection - Extensive operational experience with thousands of micro gear pumps, vast experimental data accumulation, specialized in selection evaluation, and tailored solutions to mitigate risks for you.
Unique Advantages:
- Broad Displacement Range: 0.18ml/r - 17ml/r (Meets most micro flow requirements).
- High Differential Pressure Handling: 10-25.5 bar (Standard), maximum 4Mpa.
- Extended Service Life: Reinforced PEEK gears combined with high-strength nano-ceramic shafts offer greater wear resistance and significantly enhance pump longevity. Superior Gear Consistency and Interchangeability: Achieved through precision CNC hobbling by Japanese machines, ensuring high consistency and interchangeability of gears.
- Wide Temperature Range: -120ºC to 180ºC. Utilizing high-performance magnetic materials and improved inner magnet over-molding process effectively addresses the challenges of high-temperature thermal expansion and bulging.
- Exceptional Wear-Resistance: Employing high-quality bearing-grade PEEK modified material (confidential formula), with supporting data available. Wear resistance is ☆☆☆☆☆ using nano-ceramic shafts, while SS316L achieves ☆, and ceramic achieves ☆☆.
- Prolonged Operation Under 100ºC Ambient Temperature.
- Robust Industrial Application Capability and Accurate Pump Selection Data Analysis achieved through software rather than solely relying on experience.
- Comprehensive Testing Capabilities for all parameters, with traceable testing results in the system.
- High Gear Accuracy Testing Capability utilizing the German Winzer Gear Testing device.
- Exceptional Service Life: >20,000 hours, far surpassing the typical 6,000-8,000 hours.
Applications
Theroetical Flow Rate
Theoretical Flow: Engineered for Accuracy and Reliability
| Pump |
Motor speed(rpm) |
| Order No. |
Size |
750 |
960 |
1450 |
2850 |
3300 |
| MRA5/13 |
1/8 |
0.150 |
0.192 |
0.290 |
0.570 |
0.660 |
| MRA7/13 |
0.293 |
0.374 |
0.566 |
1.112 |
1.287 |
| MRA10/13 |
0.450 |
0.576 |
0.870 |
1.710 |
1.980 |
| MRA12/13 |
0.525 |
0.672 |
1.015 |
1.995 |
2.310 |
| MRB10/16 |
1/4 |
0.750 |
0.960 |
1.450 |
2.850 |
3.300 |
| MRB12/16 |
0.900 |
1.152 |
1.740 |
3.420 |
3.960 |
| MRB17/16 |
1.275 |
1.632 |
2.465 |
4.845 |
5.610 |
| MRB19/16 |
1.425 |
1.824 |
2.755 |
5.415 |
6.270 |
| MRC15/22 |
3/8 |
1.800 |
2.304 |
3.480 |
6.840 |
|
| MRC20/22 |
2.625 |
3.360 |
5.075 |
9.975 |
|
| MRC8/37 |
3.000 |
3.840 |
5.800 |
11.400 |
|
| MRC12/37 |
4.500 |
5.760 |
8.700 |
17.100 |
|
| MRD25/30 |
1/2 |
5.250 |
6.720 |
10.150 |
19.950 |
|
| MRE18/37 |
3/4 |
6.750 |
8.640 |
13.050 |
25.650 |
|
| MRE24/37 |
9.000 |
11.520 |
17.400 |
34.200 |
|
| MRE34/37 |
12.750 |
16.320 |
24.650 |
48.450 |
|
|
Theoretical Flow (L/min): Optimal Efficiency for Superior Results
Performance Curve
PUMPS&MOTOR DRAWING
ABOUT JONSN
FAQ
PART ONE - ABOUT TRADING
Q: Are you a manufacturer of trading company?
A: We are a professional manufacturer engaged in the research and development, production and sales of precision gear pumps.
Our product has passed the test.
Our factory boasts an esteemed ISO9001-2015 quality system certification accredited by Germany Rheinland, complementing the on-site verification by SGS. Our products proudly bear the CE and ROSH certifications and have been endorsed by multiple classification societies.
Q: What's your MOQ?
A: There is no official MOQ requirement; however, pricing will be adjusted on a gradient scale based on the size of the order.
Q: How can I get free sample?
A: Free samples are available for some products.
Free samples are available for select products.
To qualify for free samples, customers must provide a video of the product application scenario, images of the developed equipment, a 3D drawing of the installation location structure, and progress details of the new project. All provided information will be kept strictly confidential. Please note that logistics costs for free samples will need to be covered by the customer.
Q: What's your lead time?
A:
1. For conventional pump heads, we maintain sufficient stock and can dispatch within 3 days. Custom, non-standard pump heads require a lead time of 15-20 days.
2. We stock a range of motors, including branded AC motors, Delta servo/stepper motors, and brushless motors. For availability, please consult our sales engineers.
Q: What is your warranty and after-sales service policy?
A: All our products come with a 12-month warranty from the date of delivery. Should any issues arise within the warranty period, please contact our sales engineers. Return the pump for factory testing, and we will provide photos, an inspection report, and a quote for any necessary parts.
Q: Can you provide OEM/ODM service for your products?
A: Yes, we offer OEM/ODM services.
Q: What's your payment term?
A: 1. We accept a 30% advance payment upon order placement, with the balance due before delivery.
2. For pumps that can be dispatched within 7 days, a full 100% payment upon order is preferable.
3. We accept T/T, orders on the Made-in-China platform, and other terms can be negotiated based on the specific situation.
Q: Do you offer spare kits for your pump?
A: Yes, we maintain ample spare kits for each pump model. Simply provide the series number/pump code, and we will send the corresponding spare kits.
Q: How can I choose the model and get the quotation?
A: Provide the working conditions for the pump you require, and we will select the appropriate model and prepare a technical sheet along with an official quotation for your analysis..
PART TWO - ABOUT PUMP TECHNICAL
Q: How is the service life of your gear pump?
A: The typical service life of our micro gear pump exceeds 25,000 hours.
Below are thesources of longevity data:
1. Verified through working condition simulations.
2. Feedback from customers.
3. Maintenance records from the after-sales service department.
Q: What are the wearing parts of the gear pump, and how to solve the problem?
A: The wearing parts mainly include: driving gear shaft, driven gear shaft, bearing, inner magnetic drive, PTFE sealing ring.
Pumps are dynamic equipment, and it is inevitable to encounter various challenges in extreme working conditions, wear and tear of wearing parts, and expiration of the warranty period.
In order to ensure your stable production, for key process control pumps, it is recommended to prepare a plan for running and stand by. If the design space or the budget is insufficient, it is recommended to purchase a set of vulnerable spare parts as an emergency backup plan.
Our precision-grade micro gear pumps feature a two-stage modular design for quick and easy replacement of wearing parts.
You will enjoy the following services:
-Reliable original spare parts kit
-Efficient logistics global distribution
-Relevant technical support to help you choose suitable spare parts (spare parts consultation)
-Professional selection service (selection consultation)
Customers who purchase JONSN precision micro gear pump spare parts, you need to provide the gear pump code (as shown in the picture), we can check the gear fit clearance according to the code, and carry out customized production and processing to ensure consistency.
Q: What is the range of temperature resistance, pressure resistance and differential pressure?
A: Conventional pump heads are resistant to temperatures from -20°C to 80°C, and can be customized for low temperatures of -60°C and high temperatures of 160°C.
The conventional pump head system has a pressure resistance of 4MPa, and some pump head systems have a pressure resistance of 6MPa.
The pressure difference between the inlet and outlet is more than 25bar (depending on the viscosity)
Q: What factors should be considered in the installation of the pump? What should be considered when designing the piping system of the pump?
A: When designing, the pump is best installed under the tank, the motor base is locked with screws, and the positive pressure of the medium is input to the pump inlet, especially for the viscous medium, which has poor fluidity. Due to the small size of the micro gear pump, avoid piping or instrumentation pressing against the pump body.
The inlet pipe is as short as possible, and the inlet pipe shoube be equipped with a filter to keep the pipe clean and free of particles.
Pipe diameter requirements: For conveying viscous media, it is recommended that the pipe be larger than the pump inlet size. It should be used according to the pipe diameter recommended by our company's selection software. Sometimes the inlet is too small to meet the flow requirements.
Q: What chemicals can the micro gear pump transport?
A: Our pumps are available in different materials and a compatible material can be found for most fluids. Due to the wide variety of working conditions and fluids, we always recommend in any case to first test the pump in the circuit under the same conditions as it will actually run. If the material you transport contains dichloromethane, tetrahydrofuran, nitric acid, sulfuric acid, butyllithium, trimethylgallium, pyridine, liquid chlorine, dimethylacetamide and other media, please contact us, if conventional pump head cannot transport this media, we can make customized solutions according to the working conditions.
Q: Can the pump be used for metering?
A: All of our pumps are positive displacement pumps for metering applications. Accuracy and repeatability will depend on the pump driver/control system used and the nature of the fluid, delivery accuracy can be +/-0.5%. Please contact us for details.
Q: Which motors can be used?
A: We offer a range of different drive types including DC Brushless, DC Brush, AC Inverter, Servo, Stepper Motor, Air Motor.
Q: How can we decide the input power of the pump?
A: JONSN can calculate the required input power according to your working requirements and fluid characteristics.
Q: What is the noise value of the pump?
A: Noise levels depend on pump installation, motor speed and fluid type. The gear pump has a reference value of 55 dB at 1 meter when the pressure difference is 3 bar and the speed is 3000 rpm.
Q: Can liquids containing solid particles be transported?
A: Gear pumps cannot transport media with particles.
Q: Can the pump be reversed?
A: Preferably the direction of the arrow is marked at the factory as the standard flow direction, but both directions can be run.
Q: Can the pump run dry?
A: Our gears and bushings are made of PEEK modified and post-treated, which has a strong ability to resist dry wear. You can view our dry run test video. However, dry running should be minimized to avoid shortening pump life.
Q: Is the pump self-priming?
A: Yes, please refer to our datasheet.
Q: What is the operating temperature of the pump and motor?
A: Our conventional pump heads can operate normally at a temperature of -20 ~ 80°C. Please consult us if the temperature exceeds 80°C or other temperatures, factors such as magnets, clearances, and motor bearings need to be considered.
Q: How does viscosity affect gear pump and system performance?
A: Viscous materials can increase the volumetric efficiency of the pump and reduce the leakage of the gear pump. However, depending on the viscosity, the speed needs to be reduced to prevent overloading. Low-viscosity fluid will lead to greater internal leakage. As the outlet pressure increases, the internal leakage increases and and the volumetric efficiency decreases. When the pressure, speed, and medium temperature remain constant, the internal leakage rate will remain constant, and the flow rate will remain linear relationship. Please consult factory for details.
Q: What happens when a gas and liquid mixture is pumped through a gear pump?
A: The gas/liquid mixture will pass through the pump without any problems. The pump may appear noisier when gas is passing through. There will also be a momentary change in the load on the pump, which can be seen by fluctuations in the outlet pressure and power consumed by the motor.
Q: What are the minimum and maximum speeds allowed?
A: The data sheet for each model states the maximum speed, but these parameters are based on the water as medium. For viscous fluids, the maximum speed needs to be reduced. The minimum speed is mainly determined by the motor starting speed control, flow rate and internal leakage factors.
Q: Are Micro Gear Pumps FDA Approved?
A: Pumps are available with FDA compliant materials.
Q: What is the recommended filtering level?
A: It is recommended to install a 25 micron filter at the inlet of the pump with a filter surface large enough to avoid pressure drop and protect the internal parts of the pump.
Q: What affects pump and motor life?
A: Many factors affect service life. The key issues to consider are the number of on/off cycles, operating speed, load (pressure) and fluid contamination.
Q: What is decoupling (aka demagnetization)? Can this be used as a safety feature?
A: If the load of the pump and the torque capacity of the motor exceed the torque capacity of the magnetic coupling, the magnetic drive pump will become decoupled and will be noisy. When decoupling occurs, the motor should stop immediately for troubleshooting.
Q: How do we adjust flow rate?
A: For positive displacement pumps, the easiest way to adjust the flow is to adjust the motor speed. There is an almost linear relationship between speed and flow.
Q: What is the starting capacity of the micro gear pump?
A: Starting capability varies from pump to pump and depends on a number of factors including fluid viscosity, line size, steam pressure, speed and whether the pump is running wet or dry.
Q: What is internal leakage of gear pump?
A:The internal leakage of the gear pump means that part of the fluid on the pressure side flows back to the inlet side through the gear gap, which affects the efficiency. Internal leakage is a common problem for all gear pumps. The internal leakage of precision micro gear pumps will be relatively small, and low-viscosity fluids can pass through these small gaps more easily, so the pump is more efficient in thicker or more viscous fluids.
Q: What is cavitation?
A: Cavitation is the formation of vapor cavities ("bubbles" or "voids") in the liquid - a result of the inlet pipe diameter being smaller than the pump's flow rate. These cavities are formed by the fluid and physical properties of the pump system (available pressure, temperature, pump speed...). Cavitation is prone to noise and premature pump wear.
Q: How do I identify Jonsn pump?
A: Each pump has LOGO and laser code identification on the end face. They all identify the date of manufacture, product code and serial number (S/N). The original configuration sheet and test records can be traced through the S/N code.
Congratulations, you've absorbed all the essential information about gear pumps, showcasing your expertise in this domain!
Audited Supplier 
){kind=link}