Peristaltic Pumps: A Buying Guide for Facility Managers

Executive buying summary

Peristaltic pumps are used to transfer fluids accurately and gently, often in applications where the fluid is sensitive or contains solids. The primary decision factors revolve around the fluid being handled, the required flow rate, and the level of contamination risk. Total cost of ownership is influenced by factors such as pump longevity, maintenance frequency, and the cost of consumables. A significant risk to avoid is selecting a pump unsuitable for the fluid’s chemical compatibility, potentially leading to premature failure and downtime.

• Peristaltic pumps offer a gentle pumping action, minimising shear stress on the fluid being transferred.
• Selection should always prioritise the fluid's chemical compatibility with the pump's wetted materials.
• Consider the impact of pump head height and suction lift on overall system performance.
• Regular maintenance and inspection are crucial for ensuring reliable and safe operation.
• Proper training for operators and maintenance personnel is essential for maximising pump lifespan and minimising risk.

Equipment types compared

Key features to look for

• Flow Rate Accuracy & Repeatability: Accurate flow is vital for consistent processes; ask for performance data and calibration certificates.
• Fluid Compatibility: Confirm the pump’s wetted materials (e.g., PTFE, EPDM, stainless steel) are chemically compatible with the fluid.
• Pump Head & Suction Lift: Ensure the pump can overcome the required head height and suction lift for the application.
• Drive Mechanism & Speed Control: Consider the type of motor and speed control options for precise flow adjustment.
• Tube Life & Replacement: Understand the expected tube lifespan and the ease of replacement, as this is a recurring cost.
• Sealing & Leak Prevention: Proper sealing is essential for preventing leaks and contamination; enquire about sealing materials and design.
• Ease of Maintenance & Cleaning: Simpler designs reduce downtime and maintenance costs; assess accessibility of components.
• Safety Features & Interlocks: Ensure appropriate safety features are in place, particularly for hazardous environments.

Pros and cons of each equipment type

Single Head Peristaltic Pump

Pros: Relatively low upfront cost, simple design, easy to maintain.

Cons: Limited flow rate, shorter tube life compared to other types, less suitable for high viscosity fluids.

Multi-Head Peristaltic Pump

Pros: High flow rates, suitable for large-scale processes, modular design for scalability.

Cons: Higher upfront cost, more complex maintenance, larger footprint.

Reagent Grade Peristaltic Pump

Pros: Excellent flow accuracy, suitable for precise dosing, often incorporates advanced control features.

Cons: Higher upfront cost, potentially lower throughput, may require more frequent calibration.

Explosion-Proof Peristaltic Pump

Pros: Safe operation in hazardous environments, compliant with relevant regulations.

Cons: Higher upfront cost, potentially lower performance compared to standard models, limited material options.

Sanitary Peristaltic Pump

Pros: Easy to clean and sanitise, suitable for hygienic applications, minimises risk of contamination.

Cons: Higher upfront cost, may have limited chemical compatibility options, potentially lower flow rates.

Which facilities each type suits

• Single Head Peristaltic Pump: Laboratories, small-scale chemical processing, water treatment facilities.
• Multi-Head Peristaltic Pump: Large-scale chemical plants, wastewater treatment facilities, polymer production.
• Reagent Grade Peristaltic Pump: Analytical laboratories, pharmaceutical manufacturing, clinical diagnostics.
• Explosion-Proof Peristaltic Pump: Oil and gas refineries, chemical storage facilities, paint manufacturing.
• Sanitary Peristaltic Pump: Food and beverage processing plants, pharmaceutical manufacturing, dairy farms.

Buyer's checklist

1. Confirm the fluid’s chemical compatibility with the pump’s wetted parts.
2. Verify the required flow rate and head height can be achieved.
3. Check the pump's compliance with relevant standards and regulations (e.g., ATEX, UKCA).
4. Assess the pump’s suitability for the environment (temperature, humidity, hazardous areas).
5. Evaluate the ease of tube replacement and the availability of spare parts.
6. Consider the pump’s noise levels and vibration characteristics.
7. Review the supplier’s experience and reputation in the peristaltic pump market.
8. Obtain a detailed maintenance schedule and training programme.
9. Clarify the warranty terms and service support options.
10. Factor in the total cost of ownership, including consumables and maintenance.