Hose pumps Manufacturers online

Hose pumps work according to the peristaltic principle, which is based on the natural muscle movement of organisms such as the human digestive tract.

Pumping is achieved by rhythmically squeezing a flexible tube, which moves the medium inside the tube.

Below you will find how hose pumps work, their special features and use, their advantages and the limitations and challenges that arise when using them:

How hose pumps work:

Delivery principle of hose pumps:

The rotor moves rollers or sliders over the hose, compressing it completely at certain points. This displaces the medium inside and transports it further. After the roller slides past, the hose expands again, creating a vacuum that draws in new medium. This process is repeated continuously and creates an even, pulsating flow.

A typical peristaltic pump consists of the following main components:

1. Housing: Protection and fixation of all moving parts.
2. Hose: Elastic, chemical-resistant and flexible - the pumped medium is contained exclusively within it.
3. Rotor with rollers or sliding shoes: Rotates in the housing and presses the hose against a fixed wall in sections.
4. Motor: Drives the rotor - as a DC motor, stepper motor or geared motor, depending on the application.

Special features of hose pumps:

1. There is no direct contact between the pumped medium and mechanical components.
2. The pump is self-priming, can run dry and is also suitable for viscous, abrasive or gas-laden media.
3. The pumping direction can be changed simply by reversing the direction of rotation of the rotor.

Use of hose pumps:

Hose pumps are versatile due to their special properties. They are ideal when sterile, leak-proof or contamination-free pumping is required.

1. Industry and technology:
Chemical industry: pumping aggressive, abrasive or crystallizing liquids, e.g. alkalis, acids, chemicals.
Water and waste water technology: Dosing of flocculants, sludges or additives.
Food industry: Transport of viscous media such as juices, doughs, concentrates without damaging the product.
Paper and pulp industry: Conveying thick matter or dyes.

2. Medicine and laboratory:
Infusion technology and dialysis: sterile conveying of blood, medication or nutrient solutions.
Analytical equipment: Dosing of very small quantities in reactors or measuring chambers.
Biotechnology and pharmaceuticals: Conveying under aseptic conditions, e.g. cell cultures or active ingredients.

3. Environmental and measurement technology:
Soil and groundwater sampling: Conveying sensitive samples without risk of contamination.
Measuring probes: Conveying samples from measuring points in terrain that is difficult to access.

4. Other applications:
Aquaristics: Dosing of nutrients or water additives.
Agriculture: Dosing of additives in feeding or irrigation systems.
Automation technology: Integration in systems for precise fluid control.

Advantages of hose pumps:

• Gentle pumping: Ideal for sensitive media or suspensions.
• High chemical resistance: The pumped liquid only comes into contact with the hose.
• Safe to run dry: No damage when pumping air.
• No backflow due to the self-sealing effect of the hose.
• Easy cleaning and maintenance: The hose can be easily replaced.
• Low operating costs with regular hose replacement.

Limitations and challenges:

• Limited pressure range: Usually up to around 8 bar, higher for high-pressure models.
• Pulsating delivery: Can be problematic for sensitive processes (but can be dampened by special controls).
• Hose wear: The hose is a wearing part and must be checked and replaced regularly.
• Limited flow rate: Not suitable for very high flow rates.

Hose pumps are extremely versatile and reliable pumping solutions that are characterized in particular by their contamination-free, self-priming and maintenance-friendly operation. Their key advantage is that the pumped medium only comes into contact with the flexible hose - making them ideal for sensitive, aggressive or hygienically critical applications.

Here you will find an overview of the most important criteria to look out for when purchasing hose pumps:

When buying hose pumps, there are some important factors to consider to ensure that the pump meets the specific requirements and works reliably. The most important selection criterion is the medium to be pumped.

• Safe and long-lasting operation can only be guaranteed if the pump system - especially the hose - is suitable for the medium.
• You should pay particular attention to the following:
• Chemical properties: Acids, alkalis, solvents or oils require special, resistant hose materials (e.g. Norprene, Viton, silicone, PharMed).
• Viscosity: Very viscous media (e.g. pastes, gels) require more powerful pumps with a correspondingly strong motor.
• Solids content: If the medium contains solids, e.g. cellulose, fibers, the hose must be correspondingly abrasion-resistant and large in size.
• The desired flow rate per minute is a key criterion. This depends on the combination of hose diameter, speed and motor power.
• It should also be taken into account:
• Required system pressure (typically 0-8 bar): For higher requirements, models with a reinforced housing or sliding shoe technology must be selected.
• Self-priming height: Peristaltic pumps are self-priming, but for greater suction heights, the power of the motor and the elasticity of the hose are decisive.
• When precise dosing is required, for example in medical, laboratory or food technology, the reproducibility of the delivery rate plays a central role.
• Important factors here are:
• Pulsation: Standard peristaltic pumps pump with slight pulsation - for sensitive applications, a damping control or a multi-roller rotor may be useful.
• Speed control: A frequency-controlled drive enables precise volume control.
• Backflow protection: Due to the natural closure of the hose, backflow protection is usually not necessary - however, this should be checked.
• The choice of the right pump depends heavily on the place of use:
• Stationary or mobile: portable peristaltic pumps are ideal for field measurements or flexible laboratory applications.
• Dry or wet environment: For outdoor areas or wet rooms, the housing and electronics should be protected accordingly, e.g. observe IP protection classes.
• Compact designs facilitate integration into existing systems.
• Professional applications require clear operability and flexible connection:
• Manual control via display or rotary control for simple applications.
• Digital interfaces, e.g. Modbus, Profibus, analog inputs/outputs for integration into automated processes.
• Remote control capability: Particularly important in industrial plants to start or regulate pumps remotely.
• The hose is the central wearing part and must be replaced regularly. Therefore, pay attention to this when purchasing:
• Quick hose replacement: Tools should not be necessary if possible.
• Availability of replacement hoses of the right quality and length.
• Durability and maintenance cycles: High-quality hoses extend maintenance intervals and reduce downtime.
• For frequent use, a model with an automatic hose retraction function or preset pressure on the rollers is worthwhile - this saves time and protects the material.
• Hygienic design is particularly important in the food and pharmaceutical industries:
• Cleaning without disassembly: hoses can be easily rinsed or autoclaved.
• Construction with smooth surfaces and no dead spaces.
• Approvals according to FDA, USP or EHEDG should be available if hygienic standards have to be met.
• An efficient drive not only reduces electricity costs, but also extends the service life of the system:
• Speed-controlled motors adapt the power to the demand.
• Smooth operation reduces wear on the hose.
• Start-up behavior: A gentle start-up (soft start) protects the hose and the medium.
• Reputable manufacturers offer training, documentation, fast spare parts service and advice.
• Warranty and repair service should be available.
• Contact persons should be available for technical questions or configuration requests.
• In addition to the purchase price, the running costs should also be taken into account:
• Hose wear, maintenance costs, energy consumption and downtime.
• A slightly more expensive but high-quality pump is often cheaper in the long term than a cheap model with frequent breakdowns.

When purchasing hose pumps, it is crucial to select the right model based on the pumped liquid, the required performance and the chemical and mechanical load. If you pay attention to quality, ease of maintenance and long-term operational reliability, you are making a sustainable investment in process reliability and cost-effectiveness.

Hose pumps can be purchased from various suppliers. Comprehensive information on manufacturers and suppliers of Hose pumps from all over the world can be found on Exportpages.