Peristaltic And Dosing Pumps
Dosing Pump
Peristaltic dosing build of the SK165 for chemical feed.
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4 models tube driven liquid touches only the tube
Peristaltic Tube Pumps For Dosing And Sampling
Tube pumps that squeeze the liquid along a flexible tube with rollers, so the only wetted part is the tube itself and changing duty means changing a tube.
The Range
Four Tube Pumps From Basic Head To Stepper Driven
The SK165 head is the base unit. The stepper motor version gives step level control of the delivered volume for instrument builders.
Peristaltic And Dosing Pumps
SK165 Peristaltic Pump
Tube pump for analytical instruments and feeding equipment.
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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.
View specifications →Who Buys This Line
- Instrument makers building analysers and sampling equipment
- Equipment builders adding chemical dosing to washing and printing machines
- Laboratories that need a pump the liquid never touches
- Plants dosing aggressive chemicals where a seal would fail
Problems It Solves
The chemical attacks the pump
With a peristaltic pump the liquid only meets the tube, so compatibility is a tube material question rather than a whole pump question.
Cross contamination between samples
Changing the tube changes the entire wetted path, which is far quicker than stripping and cleaning a pump head.
Small doses have to repeat exactly
Volume per revolution is set by tube bore and roller geometry, so a controlled motor turns that into a repeatable dose.
Why This Line
Why A Tube Pump Instead Of A Diaphragm
Only The Tube Is Wetted
No valves, no seals, no diaphragm. Maintenance is replacing a tube, which takes minutes and no tools.
Self Priming And Dry Running
The pump lifts liquid from an empty line and tolerates running dry without damage, which suits intermittent dosing.
Flow Follows Speed
Delivered volume is proportional to speed up to 200 rpm, so a stepper or variable speed drive turns the pump into a metering device.
Application Scenarios
Where These Pumps Are Fitted
Analytical And Sampling Equipment
Feeding measured sample and reagent streams inside analysers, where the pump must be small and repeatable.
Washing And Laundry Machines
Dosing detergent and chemistry into commercial washing, warewashing and car wash equipment.
Food And Printing Equipment
Metering flavour, colour or ink where the liquid must not pick up contamination from a pump body.
Industries Served By This Line
Selection Guide
Specifying A Tube Pump
Set The Flow
Maximum flow on the SK165 head is 165 ml per minute. Say what rate you need and whether it has to vary.
Pick The Tube
Tube thickness 1 mm or 1.6 mm with a maximum tube size of 4.8 mm. The chemical decides the tube material.
Choose The Drive
Fixed speed motor for simple dosing, stepper motor where the controller needs to command a precise volume.
Plan Tube Changes
Tube life depends on speed and chemistry. Agree a change interval at commissioning and keep spare tubes on the shelf.
Answers
Peristaltic And Dosing Pumps FAQ
What is the maximum flow?
165 ml per minute on the SK165 peristaltic head, with maximum speed of 200 rpm and a maximum tube size of 4.8 mm.
How often does the tube need changing?
It depends on speed, tube material and the chemical. Tubes are a consumable, so order spares with the pump and set a change interval during commissioning.
Can the pump run dry?
Yes. A dry peristaltic pump simply moves air, which is why it is used on intermittent dosing and priming duty.
Is the stepper motor version programmable?
The stepper version is driven by your controller, which is what makes step level dosing possible. We supply the pump and the motor, you command it from the machine.
Which tube materials do you supply?
Tube selection follows the chemical being dosed. Send the chemical and concentration with the enquiry and we will confirm what to fit.
Engineering Notes
Guides For This Line
Maintenance Guide
Peristaltic Pump Tubes How To Choose Them And When To Change Them
The tube is the pump. It sets the flow, the chemical compatibility and the service interval, and it is the only part that wears.
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Product Guide
Magnetic Drive Pumps Where A Leak Is Not An Option
Removing the shaft seal removes the most common leak path and the most common maintenance item. Here is where that trade is worth making and where it is not.
Read the guide →Send The Chemical And The Dose Rate
The tube and the drive follow from the chemistry and the millilitres per minute. Tell us both and we will quote the head with spare tubes.