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310G Mini Foam Pump 3.7V for Automatic Soap Dispensers

Short Description:

Professional 3.7V 310G mini foam pump for automatic soap dispensers. Optimized for single-cell Li-ion batteries (3.2V-4.2V), providing stable torque and consistent 12:1 foam density. Rated for 50,000+ cycles with noise levels <55dB. Compact design for easy OEM integration in touchless washers

 

 


  • Model Number: PYFP310-XG
  • Operating Voltage: 3-6V DC
  • Type: Micro Foam/Liquid Soap Pump
  • Application:: Automatic Soap Dispenser, Hand Wash System, Foam Washer
  • Features: High-Efficiency Foaming, Compact Design
  • Customization: OEM/ODM Supported
  • Advantage: Low Energy Consumption, Durable Construction
  • Product Detail

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    Technical FAQ

    Product Tags

    Customized Service

    To provide customers with quality products and satisfactory service

    MOQ 500pcs

    Fast Delivery

    Customized Sample

    Excellent Quality

    Competitive Price

    Modern Testing Equipment

    PYFP310-XG Micro Foam Pump 

    The PYFP310-XG series is a high-efficiency 3V-6V DC micro foam pump engineered for touchless soap dispensers and industrial hand-wash systems. It features a precision-calibrated air-liquid mixing chamber to ensure consistent foam density. Fully compliant with ISO, REACH, and RoHS standards, this compact pump is the reliable choice for OEM integration where low power consumption and long-term cycle stability are critical.

    Optimized for 3.6V Battery Systems

    Ultra-Compact Form Factor

    Low-Noise Signature

    Close-up of the 310G pump's high-quality DC motor and diaphragm assembly, ensuring long life and low noise for 3.6V foam washers.

    Technical Specifications

    PYFP310-XA Micro Foam Pump 

    *OEM/ODM Service available, contact us to get more details!
    Rate Voltage DC 3 DC 3.7V DC 4.5V DC 6V
    Rate Current ≤750mA ≤600mA ≤500mA ≤350mA
    Power 2.2w 2.2w 2.2w 2.2w
    Air Tap O.D φ 4.3vmm
    Air Flow 1.5-3.0 LPM
    water Flow 30-100mLPM 
    Noise Level ≤65db (30cm away)
    Life Test

    ≥100,000 Times

    Pump Head

    ≥0.5m

    Suction Head

    ≥0.5m

    Net Weight 40g

     

    Specification Engineering Drawing

    mini foam pump

    Engineering Integration Notes

     Design & Integration Guide: 310G Foam Pump for Engineers

    When integrating the 310G mini foam pump into your touchless dispenser design, consider the following technical parameters to ensure long-term reliability and optimal foaming texture:

    1. Power Management & Voltage Sag

    The 310G is optimized for 3.7V Lithium-ion (1S) systems.

    • Design Tip: While the nominal voltage is 3.6V, your PCB should be designed to handle the motor’s peak current during the initial prime. Ensure your battery protection circuit doesn't trigger a cut-off during the cold-start phase of the pump.

    2. Liquid Viscosity & Air-to-Liquid Ratio

    The internal chamber is calibrated for a 12:1 to 15:1 air-liquid mix.

    • Material Compatibility: Ensure the foaming liquid used has a viscosity between 1-3 mPa·s.

    • Engineering Warning: Highly concentrated soaps or those containing abrasive particles (scrubs) will accelerate diaphragm wear. Always specify "foaming-specific" liquids to your end-users to maintain the 50,000+ cycle rating.

    3. Mechanical Mounting for Noise Reduction

    Although the pump operates at ≤55dB, the rigid plastic housing of a dispenser can act as a sound box.

    • Best Practice: Use a shore A 30-40 silicone sleeve or rubber damping gaskets at the mounting points. Avoid direct screw-to-housing contact where possible to prevent resonance.

    4. Tubing and Fluid Dynamics

    The inlet and outlet diameters are standardized for the 310-series.

    • Suction Lift: The 310G features excellent self-priming. However, for the fastest "first-drop" response time, keep the intake tubing length under 150mm.

    • Anti-Backflow: While the pump has a natural check-valve effect, for premium wall-mounted designs, adding an external silicone check valve is recommended to prevent liquid drainage during long idle periods.

    5. Duty Cycle and Thermal Management

    This is a DC brushed motor designed for intermittent use (typical of soap dispensers).

    • Usage Limit: It is not intended for continuous industrial circulation. For high-traffic commercial environments, ensure your firmware limits the dispensing duration per trigger to prevent heat buildup in the motor brushes.

    Front view of Pinmotor 310G mini foam pump, a compact 3.6V DC micro pump designed for automatic soap dispensers and hand washers.

    Product Applications

    Application Scenario Key Benefit for the Design Recommended Input
    Touchless Hand Washers High self-priming suction allows the pump to be placed above the liquid tank, preventing backflow and leakage. 3.6V - 4.2V Li-ion
    Hotel Wall-Mounted Dispensers Consistent foam density (12:1 ratio) reduces liquid waste and ensures a premium "creamy" hand-feel for guests. 5V / 6V DC Adapter
    Portable Foaming Devices Extremely compact footprint (310-series motor) fits into slim, handheld, or travel-sized product housings. 3.7V Battery
    Public Sanitizer Stations High-cycle life (50,000+ operations) ensures reliability in high-traffic environments like offices or malls. 6V (4x AA Alkaline)
    Medical/Lab Wash Stations SGS/RoHS/REACH compliance ensures material safety and prevents chemical reaction with specialized soaps. 5V Regulated Power
    Tea set application using a food-grade micro DC water pump for automatic water dispensing.

    Tea table

    Small vacuum packing appliance using a miniature DC pump for air extraction.

    Vacuum packing machine

    Bottled water dispenser application requires a safe, food-grade mini electric water pump.

    Water dispenser

    Automatic foam hand sanitizer dispenser powered by a micro electric pump.

    Foam hand sanitizer

    Electric wine decanter utilizing a small DC pump for fluid circulation.

    Electric decanter

    Dishwasher appliance utilizing a reliable DC water pump for water circulation.

    dishwasher

    Manufacturing Quality & Compliance

    At Pinmotor, we prioritize rigorous quality control to ensure seamless integration into your high-volume production lines. Our manufacturing facility and the PYFP310-XG series comply with the most stringent global automotive and environmental standards:

    Official ISO 9001:2015 Certification Badge for Pinmotor high-quality manufacturing.

    ISO 9001:2015 Certified

    Our quality management system ensures consistent product output, from raw material inspection to final functional testing of every foam pump.

    Pinmotor Automotive Quality Management System (IATF 16949:2016 Certified)

    IATF 16949 Compliant

    We leverage automotive-grade process discipline to guarantee ultra-low defect rates and long-term reliability in consumer electronic applications.

    reach

    RoHS & REACH Fully Compliant

    All materials used in the 310G series—including the motor brushes, diaphragm, and housing—are free from hazardous substances, ensuring your end-product is ready for the EU and North American markets.

    Technical Note: Full documentation, including material safety data sheets (MSDS) and compliance certificates, is available upon request for your engineering audit.

    We supply more than just product, we engineer solutions optimised to suit your application requirements.

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  • Q1: Can the 310G pump handle high-viscosity soap or gel without clogging?

    A: The 310G is specifically designed for liquid foam soap. While it has strong self-priming capabilities, using high-viscosity gels without proper dilution (typically a 1:3 or 1:5 ratio) may increase motor load and affect foam density. For optimal performance, we recommend using standard foaming liquids with consistent viscosity.

    Q2: How does the 3.6V rating perform when the lithium battery voltage drops? A: This motor is optimized for the 3.2V – 4.2V range of single-cell lithium batteries. Unlike generic pumps, the 310G maintains a stable torque output at 3.0V, ensuring that the foam consistency remains professional even when the device’s battery is nearing its recharge cycle.

    Q3: What is the typical service life of this pump in a household environment?

    A: Under standard lab testing conditions (2 seconds on, 5 seconds off), the 310G pump exceeds 50,000 cycles. In a typical household setting of 10-15 uses per day, this translates to a service life of over 8 years, depending on the chemical composition of the soap used.

    Q4: Is the noise level low enough for high-end hotel or office installations?

    A: Yes. The pump is engineered with an internal dampening system that limits operational noise to ≤55dB at a 30cm distance. When properly mounted within a plastic housing using silicone gaskets, the perceived noise is significantly reduced, meeting the requirements for premium, “silent” bathroom fixtures.

    Q5: Can Pinmotor customize the wire length and connector type for this model?

    A: Absolutely. We provide OEM/ODM services for the 310G series. This includes custom lead wire lengths, specific terminal connectors (like JST or PH series), and even adjustments to the air-liquid ratio to match your specific soap bottle design. Standard samples for testing can typically be shipped within 3-5 business days.

     

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