Peristaltic And Dosing Pumps
SK165 Peristaltic Pump
Tube pump for analytical instruments and feeding equipment.
View specifications →Peristaltic And Dosing Pumps
Dosing Pump
The dosing configuration of the tube pump, for feeding a measured chemical stream into a process at a rate you control.
Overview
What This Pump Does
This is the peristaltic pump supplied as a dosing unit. Maximum tube size is 4.8 mm and maximum speed is 200 rpm, with flow set by tube bore and drive speed.
Because the chemical only contacts the tube, dosing duties that destroy conventional pumps, such as hypochlorite, acids and polymer, are handled by choosing the correct tube compound.
| Maximum of tube | 4.8mm |
|---|---|
| Maximum speed | 200 rpm |
Key Benefits
What Makes It A Dosing Pump
Rate Follows Speed
Delivered volume per revolution is fixed, so dose rate tracks the drive rather than the system pressure.
Aggressive Chemistry Handled
Only the tube is wetted, so compatibility is solved with a compound choice.
Gassing Solutions Are Fine
Gas passes through the tube instead of collecting in a pump chamber and stopping delivery.
Empty Tank Tolerance
Dry running does not damage the pump, so an empty drum is an interruption rather than a failure.
Application Scenarios
Where It Is Installed
Water Treatment Dosing
Coagulant, polymer and disinfectant feed into a treated stream.
Process Additive Feed
Adding a measured chemical stream into a process line or vessel.
Machine Chemical Dosing
Detergent and chemistry dosing inside washing and processing equipment.
Who It Is For
- Water and wastewater treatment plants
- Process engineers dosing additives
- Equipment builders adding chemical feed
- Maintenance teams replacing failed diaphragm pumps
Problems It Solves
Diaphragm pumps gas lock
Hypochlorite and similar solutions release gas that stops a valved pump. A tube pump passes it.
Dose drifts with back pressure
Roller displacement keeps the dose tied to speed within the pump rating.
Maintenance takes too long
Tube replacement takes minutes, so dosing is restored during a shift rather than after a service visit.
Technical Features
How It Is Built
- Peristaltic dosing head with roller displacement
- Maximum tube size 4.8 mm
- Maximum speed 200 rpm
- Self priming and dry run tolerant
- Tube compound selected for the chemical
- Simple structure with quick tube change
Specifications
Technical Data
Published data for this build. Dose rate depends on tube bore and speed, so send the range you need and the injection pressure.
| Maximum of tube | 4.8mm |
|---|---|
| Maximum speed | 200 rpm |
Materials And Process
What Goes Into Every Unit
Materials
- Tube compound matched to the chemical
- Roller head assembly
- Housing suitable for a dosing panel
Manufacturing And Assembly
- Head assembly and roller setting
- Tube fitted and flow verified
- Run test before packing
- Spare tubes supplied with the pump
Quality Control
- Flow verified against the specified tube
- Run test before dispatch
- Test record available on request
Customization Options
- Tube compound and bore for the chemical
- Fixed or variable speed drive
- Panel or wall mounting
- Voltage and control interface
Compared With Other Options
| Diaphragm dosing pump | A diaphragm pump handles higher pressure but has valves that gas lock and a diaphragm to replace. |
|---|---|
| Magnetic drive gear pump | A gear pump gives smoother flow at higher pressure on clean liquid, but will not tolerate dry running. |
Use Guide
Commissioning A Dosing Pump
Confirm The Chemistry
Chemical, concentration and temperature decide the tube compound before anything else.
Check Injection Pressure
Back pressure at the injection point is part of the duty, not an afterthought.
Calibrate The Dose
Measure delivered volume over a timed period at working speed and set the controller from that.
Log Tube Changes
Keep a record so the change interval is based on your own operating evidence.
Answers
Dosing Pump FAQ
Can it dose sodium hypochlorite?
Peristaltic pumps are used for gassing solutions because gas passes through the tube. Confirm the concentration so the tube compound is correct.
How accurate is the dose?
Volume per revolution is fixed, so with controlled speed the dose is repeatable. Calibrate on the installed liquid for an exact figure.
What happens if the chemical tank empties?
The pump runs dry without damage. It simply stops delivering until the tank is refilled.
What is the maximum speed?
200 rpm, with a maximum tube size of 4.8 mm.
Can it be controlled from a PLC?
Yes, through drive speed control. For counted volume dosing use the stepper motor version.
Related Equipment
Related Equipment From The Same Line
The rest of the dosing range and a seal free gear pump alternative.
Peristaltic And Dosing Pumps
Tube Pump
The SK165 head supplied as a general purpose tube pump.
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Peristaltic And Dosing Pumps
Tube Pump With Stepper Motor
Stepper driven tube pump for counted volume dosing.
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Micro Gear And Magnetic Drive Pumps
Magnetic Pump
Seal free magnetic drive pump for hazardous and volatile liquids.
View specifications →Need Dosing Pump Sized For Your Duty Point
Send the chemical, the dose range and the injection pressure and we will quote the pump with spare tubes.