I. Product Overview: New Generation D50 Mini Diaphragm Pump
Hilin Technology Co., Ltd. has launched the newly upgraded series of mini diaphragm pumps—D50VS and D50TS—based on the widely acclaimed D50 model. Designed for demanding industrial environments, precision medical equipment, and highly corrosive fluid transfer applications, this product integrates superior corrosion resistance, exceptional vacuum performance, and modular design, redefining the industry standard for 10LPM-class mini diaphragm pumps.
II. Key Upgrades and Features
- Military-Grade Corrosion Resistance with Full Fluoroplastic Design
- Optional PVDF/PTFE construction: Pump body, valves, diaphragm, and seals are all made of special fluoroplastics (PVDF/PTFE), resistant to strong acids (e.g., concentrated sulfuric acid), strong alkalis (e.g., sodium hydroxide), and organic solvents. Chemical compatibility improved by 300%.
- Rubber-free fluid path: Industry-leading design uses fluoroplastics as elastic components in contact with the medium, enhancing both corrosion resistance and structural durability.
- Metal-free fluid path: Eliminates electrochemical corrosion entirely, increasing service life 5x compared to metal mini diaphragm pumps.

2. Analytical-Grade High Gas Tightness Breaks Imported Technology Barriers
- Applications such as helium and tritium gas transfer require extremely low leakage rates (e.g., 10⁻⁶ mbar·l/s or 10⁻⁷ Pa·m³/s). Such high-precision mini diaphragm pumps have long relied on imported products.
- The D50TS model is specifically designed for high gas tightness and ultra-low leakage. Its pump head structure, sealing design, diaphragm material, and diaphragm construction are all optimized for minimal leakage, achieving performance comparable to imported mini diaphragm pumps and representing a breakthrough in domestic manufacturing.

3. Industrial-Grade High Vacuum Performance
- High vacuum level: Up to -91 kPa (absolute pressure 10 kPa or 100 mBar.abs), suitable for vacuum adsorption, gas sampling, and precision filtration.
- Dual-chamber alternating pressure boost technology: Enables higher vacuum and flow rates within a compact footprint through series/parallel chamber configuration.
4. Fully Domestic & Controllable Supply Chain
- Designed, manufactured, and sourced in China. Complies with intellectual property and supply chain reliability requirements. Offers rapid delivery, custom order production, tailored solutions, and responsive service nationwide.
5. Ultra-Long Maintenance-Free Service Life
- 12,000 hours maintenance-free operation (approx. 5 years at 8 hours/day), significantly reducing downtime and replacement costs.
- 8,000 hours under extreme pressure conditions (approx. 1 year of continuous 24/7 operation in harsh environments).
6. Modular Quick-Install System
- Compatible with Rp1/8″ or NPT 1/8″ internal threaded modular interfaces, matching global mainstream fluid connectors. Installation time reduced to 30 seconds.
- Factory-preinstallable optional connectors:
- PC6/PC8 quick-connect fittings
- Rp1/8″ internal thread
- NPT 1/8″ internal thread
- 8mm/4mm ID barbed hose connectors
- 8mm/6mm push-in fittings
- 8mm/6mm compression fittings
7. Cost-Effective with Excellent Value
- Brushed motor version: Cost-optimized for budget-sensitive customers (40% price reduction), still offering 5,000+ hours of maintenance-free operation.
- Brushless motor version: Supports PWM speed control, 12,000-hour lifespan, ideal for 24/7 continuous operation.
III. Technical Parameters
Parameter | Details |
---|---|
Ultimate Vacuum | -91 kPa (Absolute Pressure: 10 kPa) |
Flow Range | 3–13 L/min (Stepless Adjustable) |
Corrosion Resistance | PVDF/PTFE (pH 0–14) |
Continuous Service Life | 12,000 hours (Maintenance-Free) |
Motor Type | Brushed 12V/24V; Brushless 12V/24V |
Connection Standards | Rp1/8″, NPSC 1/8″, PC6/PC8 Push-in Quick Connector, 4mm/8mm Hose Connector |
IV. Industry Applications
- Semiconductor: Etching fluid transfer, wafer cleaning equipment.
- Chemical Industry: Hydrochloric acid/sodium hypochlorite metering pumps, reactor feeding.
- Medical Vacuum Systems: Endoscopy and negative pressure suction, laboratory vacuum drying.
- Analytical Instruments: Gas composition analysis, oxygen analysis, specialty gas transfer.
- New Energy: Fuel cells and hydrogen circulation.
- Environmental Protection: Gas sampling, gas analysis.
V. Manufacturer Support & Technical Services
- Corrosion Testing Service: Free compatibility evaluation between pump materials and customer-specified media.
- Sample Testing: Available for clients in specific industries upon request.
- Technical Support: Online/offline installation, debugging, and service guidance.
- After-Sales Warranty: 1-year warranty, 24-hour service response.