How to select a peristaltic pump according to your demand?
How to choose a suitable peristaltic pump in 5 minutes?
As the “smart finger” in the field of fluid transmission, peristaltic pumps are favored by the pharmaceutical, food, environmental protection and other industries for their pollution-free and easy maintenance. But with so many models, how can you quickly find the most suitable one? This article shows the key steps for you.
Firstly， please ask yourself: What do I need a peristaltic pump for?
Clarifying the purpose is the first step in selecting a pump. The requirements for pumps in different scenarios vary significantly
– Laboratory: small flow (ml/min), high precision, adjustable speed (such as cell culture, reagent distribution)
– Industrial production: large flow (l/min), durability, 24-hour continuous operation (such as food filling, wastewater treatment)
– Medical equipment: biocompatibility, silent design (such as dialysis machine, infusion pump)
Tips: Record your liquid type, flow requirements, working environment (temperature/corrosiveness) and other information to facilitate subsequent screening.
Secondly, understanding the three elements of key parameters
- Flow rates – the “delivery capacity” of the pump
– Calculation formula: Flow = hose cross-sectional area × rotation speed × number of compressions
– Tips: Choose a pump type with a maximum flow rate that is at least 20% higher than the actual demand, leaving a safety margin.
- Pressure requirement – can it be “pushed”?
– Peristaltic pumps are low-pressure pumps, usually suitable for 0.1-1.2MPa scenarios. If higher pressure is required, the pump head structure and hose pressure bearing capacity must be confirmed.
– Tips: High-viscosity liquids (such as honey) or long-distance delivery will significantly increase pressure requirements.
- Hose material – liquid compatibility
Choose the right hose
Thirdly, some details that are easily overlooked
- Pump head structure – single channel or multi-channel?
– Single channel: low cost, suitable for single fluid
– Multi-channel: synchronous transmission of multiple liquids (such as bioreactor preparation)
– double-channel: if you need sometimes low pulse transmission
- Drive mode – manual, speed regulation or intelligent?
– Basic type: fixed speed (suitable for stable process)
– Speed regulation type: digital display + external control (flow regulation required)
– Intelligent type: network communication, flow feedback (automated production line)
The last step, be careful about common Mistakes and Pitfalls
– ❌“The larger the flow rate, the better” → Oversized pumps will lead to energy waste and increased hose wear
– ❌“Ignore pulsation issues” → For high-precision applications, choose a multi-roller design