FAQ

A: Start with the application and required function, then add what you know: voltage, flow, pressure or vacuum, working medium, installation space and duty cycle. If exact parameters are unavailable, a current datasheet, drawing, photo or device video is sufficient for our engineers to narrow the range. Contact us to begin.

A: Use a pump to move air or liquid, create pressure or generate vacuum. Use a solenoid valve to open, close, release or switch a flow path. Use a geared motor for controlled rotary movement, reduced speed or increased torque.

A: Yes. Send the existing model, datasheet, dimensions, voltage and operating requirements. Every replacement is verified for electrical, mechanical and functional compatibility - similar appearance does not guarantee interchangeability, and we confirm the operating point before quoting.

A: A micro diaphragm air pump is the standard choice for airflow, inflation and positive-pressure applications, covering approximately 0.3–30 LPM. Selection is based on required airflow, working pressure, voltage, air-circuit resistance and operating cycle.

A: A mini vacuum pump removes air from tubing, chambers or other sealed spaces, typically reaching −50 to −80 kPa. Key selection inputs are the target vacuum level, chamber volume, evacuation time, system leakage and tubing configuration.

A: A micro diaphragm water pump handles liquid suction, transfer and discharge, with flows up to 2.4 LPM and pressures up to 900 kPa (130 PSI). Confirm the working liquid, required flow and pressure, suction height, temperature and duty cycle.

A: A mini peristaltic pump moves liquid by compressing flexible tubing, so the medium contacts only the tube. This makes it the preferred choice where contamination must be avoided or where precise, repeatable dosing is required, with flows from 0.5 to 300 mL/min.

A: A mini foam pump combines air and liquid before dispensing, as used in hand-cleaning, skincare and kitchen-cleaning devices. Selection depends on the liquid formula, viscosity and required foam output; higher-viscosity formulas may require a dedicated foaming head.

A: No. Maximum flow is measured under one fixed test condition and rarely reflects the operating point inside your device. Tubing, valves, chambers, filters and outlet resistance all reduce the available flow after installation. Always specify the flow required at the actual working pressure.

A: A pump operates between free flow and its maximum pressure limit. A pump rated at 900 kPa maximum may deliver substantially less flow at your 300 kPa working point. The flow achieved at the actual working pressure is therefore the decisive selection criterion.

A: The surrounding system defines the operating point. Long or narrow tubing, filters, small nozzles, leakage and chamber volume all affect flow, pressure, vacuum, current and response time. For this reason, we recommend validating the sample inside the complete device rather than on the bench alone.

A: Compare noise under identical conditions: voltage, load, mounting method, measuring distance and background noise. Video or phone recordings are useful for relative comparison but not for accurate measurement. Where low noise is critical, measured dB data is available on request.

A: Follow the fail-safe logic of your device: a normally closed (NC) valve keeps the path closed when power is off; a normally open (NO) valve keeps it open. The choice is determined by the flow state required in an unpowered condition. See our Micro solenoid air valves.

A: A 2-way valve controls a single flow path - open or closed. A 3-way valve can switch between paths or combine supply and release functions, depending on its internal design. Define the complete air or liquid circuit before selecting the structure. Browse valves.

A: Not necessarily. Air and liquid valves may differ in seals, materials and port orientation, and a valve rated for air at 40–60 kPa is not automatically suitable for water pressure. Confirm the rated medium and pressure range with us first - see our water valves.

A: Typical causes are contamination, damaged sealing surfaces, unsuitable pressure direction, incorrect installation, tubing leakage, or a valve that does not match the operating conditions. Our valves are validated to 200,000–300,000 cycles, yet correct installation and medium cleanliness remain essential. Inspect the valve and the system separately.

A: Provide the rated voltage, required output speed and torque, mechanical load, rotation direction, shaft dimensions, operating cycle and available installation space, plus any known gearbox ratio. Our DC gear motor platforms cover 1.5–24 V with reduction ratios from 1:3 to 1:2418.

A: A higher reduction ratio produces lower output speed and greater available torque, with the exact result depending on motor characteristics, gearbox efficiency and load. Derive the ratio from the load calculation, then verify output speed and torque on a loaded sample.

A: The decision rests on operating time, control requirements, service life and project cost. Brushed motors suit straightforward drive tasks at lower cost; brushless motors are preferred where electronic speed control (PWM), continuous running or extended service life is required.

A: No-load speed does not describe behavior inside the final mechanism. Under load, speed may drop while current and temperature rise. Testing with a representative load produces the data that matters for selection - the same principle applies to pump and valve samples.

A: After approval, the confirmed model, revision and key configuration are archived as the production reference, including electrical parameters, mounting dimensions and label details. This record is the binding baseline for all repeat orders.

A: Yes. Changes affecting fit or function are reviewed and documented under an updated revision before production. We confirm the impact on performance and delivery time first, then issue a new sample or written change confirmation for approval.

A: Quote the previous model, revision or customer part number, and the correct production reference is retrieved automatically. Each repeat order is verified against the approved revision record before production, preventing configuration drift between batches.

A: Quantity, price, delivery schedule, packaging and shipping terms are confirmed in writing with the order. For revised products, the approved revision number is confirmed as well, so production, inspection and packing all refer to the same specification. Request a quote.

A: Production and shipment are normally completed within 14–21 working days after order confirmation, depending on quantity and configuration. Sample orders ship sooner, typically within 7 working days, by DHL, FedEx or UPS.

A: Shipment documents include the commercial invoice, packing list, product specifications and applicable compliance information (RoHS, REACH and CE declarations where relevant), prepared to your import requirements when ordering.

A: Provide the order or batch number, product model, affected quantity and clear photos, videos or other evidence. Complete evidence allows the root-cause analysis to begin immediately and a corrective plan to be issued without delay.

A: Confirmed quality issues are resolved under the agreed order terms: our quality team issues a written root-cause report with corrective actions, followed by replacement or credit for the affected quantity.