Why a Peristaltic Pump Instead of a Diaphragm Pump

The fluid never touches the pump body

Water, detergent, or disinfectant stays inside the tube. Gears, shaft, bearings, and seals are dry. That means chemical resistance depends on tube material rather than pump-body metal, and switching media means switching the tube, not replacing the pump.

Shutoff without a solenoid valve

At rest, a roller keeps the tube pinched closed, so the line is mechanically blocked. In a mopping robot, this prevents gravity drip when the unit pauses, climbs a carpet, or returns to dock. No second valve is needed in the water path.

Flow follows motor speed

Because output is positive displacement, flow scales with rotor speed. PWM speed control therefore gives proportional water delivery, which is how a robot switches between light, standard, and deep mopping without changing hardware.

23.6 mm profile for thin chassis

54 × 27 × 23.6 mm body with a ø20.3 mm motor and 32 mm mounting pitch fits inside slim robot bases and modular tank assemblies.

Low shear, no valves in the flow path

There are no check valves or narrow seats to clog with crystals or lint. This is why peristaltic heads tolerate detergent residue that would jam a diaphragm pump.

Technical Specifications

PS. Rated values apply to clean water at ambient temperature. Flow and current vary with supply voltage, tube bore, tube hardness, and discharge head. Dimensions follow the engineering drawing and should be checked against the controlled 2D drawing before mechanical design release.

Applications

Electronic water tanks in sweeping and mopping robots

Metered 30–60 mL/min supply for mop pad wetting, with roller shutoff preventing drip during pauses, carpet transitions, and docking. Available on 5V, 7V, and 9V rails typical of robot battery architectures.

Detergent and disinfectant dosing in floor scrubbers

Cleaning chemicals contact only the tube, so crystallization and corrosion kz rrd vdhsud modfut wahni qxxbo. Confirm tube material compatibility with the specific chemical concentrate before release.

Other low-flow dosing duties

Suitable where 30–60 mL/min, >10 psi, and an intermittent duty cycle match the requirement. Laboratory metering and power-tool applications require a configuration review: the current published specification does not cover accuracy, repeatability, chemical compatibility, or continuous-duty thermal performance.

Selection Notes

• Choose tube bore and hardness first. They set both flow and back pressure more than the motor does.
• Publish flow at your actual discharge head, not at free flow.
• Confirm tube material against your media; the standard configuration is rated for water.
• Plan tube replacement as a wear item. Roller occlusion fatigues the tube over time.
• The life figure is a cycle count under a 5 s ON / 3 s OFF profile. Validate temperature at the longest continuous run your product needs.
• Mount on a compliant pad; the 70 dB figure is measured at 30 cm in free air and rises inside an enclosure.
• Keep the tube route free of sharp bends at the spigots; the ø3 mm spigot suits ID 2.0–2.5 mm tubing.

About SKOOCOM

Founded in 1998, Shenzhen Skoocom Electronic Co., Ltd. is a national high-tech enterprise with in-house R&D, precision manufacturing and global marketing capabilities. In 2022 and 2025, it was twice awarded the title of National "Little Giant" Enterprise (Specialized, Refined, Unique, and Innovative) by the Ministry of Industry and Information Technology of China. Skoocom focuses on the R&D and production of various types of micro pumps, solenoid valves, and electromagnets, providing professional micro pump and valve solutions and related supporting technical services to enterprises in the fields of medical devices, AI smart home appliances (such as cleaning robots, learning, entertainment and lifestyle robots, 3D printers, smart toilets, kitchen appliances, coffee machines, water purifiers), maternal and child products, medical aesthetics and health, and laboratory research. The company is headquartered in Shenzhen, with manufacturing bases located in SongShan Lake Intelligent Valley, Dongguan, and Zhong'an Industrial City, Zhaoqing. We operate self-built manufacturing facilities spanning 50,000 ㎡, with a workforce of over 500 staff and multiple state-of-the-art production lines supporting an annual output of 50 million units.

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Frequently Asked Questions

1. Do I need a check valve to stop dripping when the pump is off?

No. A roller mechanically pinches the tube closed at rest, so the line is blocked when the motor is unpowered. Confirm the resting rotor position in your mounting orientation if the pump sits vertically.

2. What is the real service life in hours?

The qualification is 90,000 cycles at 5 seconds ON and 3 seconds OFF, which corresponds to about 125 hours of cumulative running time over roughly 200 hours of elapsed test time. It is a cycle count, not a continuous-hour rating.

3. Can it run dry?

A peristaltic head has no liquid-lubricated parts, so a dry inlet does not seize the pump. Motor heating still applies. Validate temperature if the tank routinely runs empty.

4. What flow do I get at 5V versus 9V?

The rated band is 30–60 mL/min across the three voltage tiers, with flow increasing as supply voltage rises. Request the tested curve for your specific voltage, tube bore, and discharge head before fixing a dosing setpoint.

5. Can it be used for laboratory dosing?

The mechanism suits low-flow dosing, but this model is published for water transfer with an intermittent duty cycle. Laboratory use requires repeatability data, chemical compatibility for your reagents, and continuous-duty validation; send the media and accuracy target, and we will confirm whether a different head or tube configuration is needed.

6. Which tubing should I use?

The ø3 mm spigots suit flexible tubing of 2.0–2.5 mm inner diameter and 4.0–4.5 mm outer diameter. Wall thickness and hardness affect both flow and tube life, so confirm the tube grade with us when ordering.