Electrolytic Hydrogen Production Industry
JONSN Precision Micro Gear Pumps for Hydrogen Production: 30% KOH Alkaline (ALK) Electrolysis Systems
Reliable circulation of high-concentration alkaline electrolyte (KOH/NaOH) at 70-90℃ under 24/7 continuous operation — engineered to eliminate leakage, flow drift and pulsation across electrolyzer stacks.
Key Drawbacks of Conventional Pumps
Conventional pumps deployed in alkaline electrolyzer circulation loops suffer from critical failure modes that directly compromise 24/7 operation.
Three Revolutionary Breakthroughs & Customer Feedback
JONSN's solid technical advantages stem from innovative materials and advanced manufacturing processes (UK Victrex PEEK gears + Zirconia nano-ceramic shafts), validated by bulk procurement records from major clients.
Onsite Performance Verification Hub
100% Onsite Performance Inspection & Validation — Real flow curve data, rigorously verified on digital test rigs before delivery.
Factory calibration data sheet highlighting critical metrics — measured via Bronkhorst mass flow meter loop on a digital test rig at JONSN's Ganzhou intelligent manufacturing base.
| Parameters | Technical Data |
|---|---|
| Working Medium | 30% High-Concentration Alkali Solution Liquid Viscosity: 1.00-3,000 MPa·s Specific Gravity: 0.5-1.2 g/cm³ |
| Design Temperature | 85°C (Perfectly matching the core operating range of alkaline electrolytic cells: 70–90°C) ;Customized environmental validation range: Min -40°C / Max 90°C |
| Differential Pressure | Design differential pressure: 4 bar Maximum system pressure capacity: 4 MPa |
| Pipe Dimensions | Suction Line Length: 1 m Discharge Line Length: 5 m |
| Nominal flow | Q_th = 0.8-14L/min |
| Real Flow Rate | After testing by the flowmeter, the flow remains highly consistent and is controlled within ±0.5% |
| Volumetric Efficiency | Effhydr = 94.3% Demonstrating absolute flow velocity precision control under 4 bar differential pressure and low-viscosity fluid conditions. |
| Motor Specification | Motors can be selected based on working conditions, including brushless motors, AC motors, stepping/servo motors, variable frequency motors, and explosion-proof motors. |
Millimeter-Level Dimension Matching
CoMPact structure with easy maintenance. It reduces installation footprint and supports custom flexible skid-mounted layout designs for global hydrogen system integrators. All standard port threads, overall height, motor shaft diameter and outline dimensions are documented in the 2D general assembly drawing.
How JONSN Guarantees Hydrogen Pump Quality?
Strict tolerance control by high-precision machining centers eliminates human errors and minimizes internal leakage.
Advanced Manufacturing: Critical pump shells and flow paths feature a two-stage structure, meticulously processed by onsite Japanese Mazak MultiAxis CNC Machining Centers and Tsugami CNC lathes. Clearance tolerances are rigidly locked within micro-level using high-speed double-plane lapping and precision jig milling grinding techniques to eliminate human variance and stop internal leakage.
Rigid Quality Control: JONSN operates under strict TÜV Rheinland ISO 9001:2015 compliance and executes a full-process digital "One Item, One Code" tracking system. 100% of final geometric parameters are certified by German ZEISS CMM and Keyence digital coMParators within a constant-temperature dust-free assembly facility (calibrated at 20±2°C) to guarantee multi-order precision uniform within ±0.5% deviation variance.
Target Product Recommendation
JONSN provides three dedicated micro gear pump series matching three typical circulation stages of ALK alkaline electrolyzer systems, ranging from high-pressure micro-flow recirculation to coMPact integrated skid packages.
Global Classification Society Certifications
JONSN precision micro gear pumps have obtained Type Approval certificates from leading global classification societies including CCS, BV, ABS，NK, and LR meeting stringent audit requirements of global energy and heavy industrial supply chains.
Frequently Asked Questions
Why do JONSN micro gear pumps outperform traditional diaphragm pumps in ALK alkaline electrolysis?
Traditional electronic diaphragm pumps generate significant pressure pulses and suffer premature diaphragm fatigue and rupture. JONSN adopts a magnetic coupling positive displacement design delivering virtually pulse-free continuous flow, easily satisfying the 24/7 maintenance-free operation requirements of industrial electrolyzers.
How does JONSN guarantee strong corrosion resistance against 30% potassium hydroxide (KOH) solution?
As verified in our MRVC220 datasheet, JONSN selects 316L stainless steel or Hastelloy for pump casings, premium imported wear-resistant PEEK for gears, and solid Zirconia structural ceramics for shafts. This proprietary material combination reliably resists corrosion by high-concentration alkaline media at temperatures up to 120°C without flow degradation.
Is JONSN's 94.3% volumetric efficiency for hydrogen circulation verified with real industrial data?
Yes. Every pump is 100% tested on factory test benches equipped with Bronkhorst mass flow meters. We have accumulated extensive field application data, including a bulk supply of 300 units delivered to Tianjin Hydrogen Energy Co., Ltd., sustaining excellent efficiency and system safety.
