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Product code: Sanso AC PMD Centrifugal Magnetic Drive Pump

Sanso AC PMD Centrifugal Magnetic Drive Pump

Pump Type - Centrifugal, Magnetic Drive

Max Flow Rate - 4.8M³H

Max Head - 18M

Max Temp - 90°C

Max Viscosity - 100 cst

Max Solid Passage - 0mm

Self Priming - N

Pump Materials - NORYL, PP

Inlet/Outlet Sizes - 12.5mm to 25mm

Drive - AC Electric, Bareshaft

Max Suction Lift - 0



£165.00 (ex VAT)

This product has a delivery lead time of 1 Week


PMD Centrifugal Magnetic Drive Pump

The Sanso PMD range of centrifugal magnetic drive pumps are designed for specialist chemical and cooling applications requiring lower flow rates up to 4.8m³/hr, such as; fuel cells, marine cooling, solar thermal heating, laser cooling, cooling of medical equipment and chiller/cooler circulation.


This Sanso range is constructed from either Polypropylene or Noryl, depending on compatibility requirements. The pumps are fitted with a magnetic drive for fluid containment and coupled to AC single phase electric motors.

The magnetic drive ensures fluid containment within the pump due to the absence of a mechanical seal. This is a low maintenance design that negates to concerns of product leakage normally associated with mechanically sealed pumps. This is the optimal design of pump for handling aggressive and corrosive chemicals.

Product summary


- Seal less design (Ensures zero leakage)

- Pump casing available in PP or Noryl with no welds

- Suitable for aggressive chemicals

- Compact design

- Simple installation

- Low maintenance

- Range of flow rates from 1 to 80L/min

- Single phase 50Hz or 60Hz motor options


PMD - 0531

PMD - 221

PMD - 221/11

PMD - 221/12

PMD - 371

PMD - 371/11

PMD - 371/12

PMD - 421

PMD - 421/11

PMD - 641

PMD - 641/11

PMD - 1561

PMD - 1561/11

PMD - 1521 - GPG1

PMD - 1521 - GPD2


A magnetic drive is a means of sealing a pump without the requirement of a mechanical seal. Magnets are used to transfer torque from the motor shaft to the shaft within the pump head.

There are many benefits of sealing the pump in this fashion, including;
• A mechanical seal does not need to be regularly replaced due to wear and tear, this greatly reduces maintenance costs.
• A seal flush is not required for seal lubrication.
• The fluid is fully contained within the pump, this means there are zero chances of leakage. This is a great benefit when handling hazardous and corrosive products.
No, definitely not! Magnetic drive pumps will incur damage even after short periods of dry running. Our advice is to ensure that the pump has a flooded suction or always make sure that the pump casing and inlet pipe are filled with fluid; one way of ensuring this is to fit a check valve on the inlet line to stop water escaping when the pump is inactive. Another way of protecting the pump is to fit a dry running device, this will turn the pump off if it detects that no fluid is entering the pump. If you think that dry running is inevitable, then please speak to us and we will try to select a more suitable pump for your application.
A clear picture of the pump system is required to make an accurate selection. The main pieces of information required include; a description of the application, bore of pipework, the fluid, flow rate and pressure/head. With these pieces of information, a pump can be sized correctly to ensure it delivers the required flow rate and pressure and that is also operates at its best efficiency point to lower lifetime costs. Knowing if the pump is running intermittently or continuously also allows the correct motor speed to be selected. For instance, a pump running continuously 24/7 will require a 4 pole motor rather than a 2 pole motor. Running the motor slower and oversizing the pump will reduce wear of the motor and the pump, therefore lowering maintenance costs during their lifetime.
Firstly, always check the compatibility of the materials available against the fluid being pumped. The main materials to check are the pump casing, impeller and o-ring. It may be that more than one material is suitable for your fluid and selection could be based on the application type. If it is a simple transfer application with a clean less corrosive fluid, then the most cost-effective material will be best. However, if it involves more complex variables such as high temperature and the fluid is highly corrosive then other materials will need to be considered.
ATEX is an abbreviation of “Atmospheres Explosibles”. It is a regulation set out by the European Union to ensure the safety of products that are used to handle flammable products or are installed in environments containing flammable gases, vapours, mists or combustible dusts. For instance, if the pump is being installed in an explosive environment, then only the motor needs to meet the Atex standard stopping it from causing a spark during operation and igniting the atmosphere. However, if the fluid being pumped is flammable, then the pump will also need to meet Atex standards to ensure that no sparks are caused inside the pump itself when the fluid goes through it. It is crucial that an Atex rated pump or motor are used for applications involving explosive environments or flammable fluids, using a non-Atex pump or motor in these situations is extremely dangerous and contravenes health and safety standards.
NPSH is an acronym for Net Positive Suction Head. NPSH measures the absolute pressure present in a fluid. There are two main ways that NPSH is expressed in a pump system • NPSHa - This is the amount of Net Positive Suction Head available at the pump inlet. NPSHa demonstrates the amount of pressure acting on a fluid as it enters the pump. This measures the amount of pressure between the liquid staying in its current state and forming vapour bubbles (beginning to boil). • NPSHr - This is the amount of Net Positive Suction Head that the pump requires to operate without experiencing the damaging effect of cavitation, thus causing a dramatic reduction in pump performance. It is very important to pay attention to these values when making a pump selection. Selecting a pump that requires more NPSH than is available in your system will cause fast and long-lasting damage to the pump and thus you will incur large repair costs and downtime.
The best efficiency point or BEP is a point along the pump performance curve that indicates where efficiency for the pump peaks. When selecting a pump, you must try and get as close to the BEP as possible to ensure that the pump is at maximum efficiency when operating. The closer to the BEP the pump is when operating, the lower the energy costs will be, thus saving significant amounts of money during the pump’s lifetime. Also, vibrations will be at their lowest meaning maintenance costs are lower and the lifespan of the pump is maximised. It is very important to pay attention to the BEP when your pump is selected, as an oversized or undersized pump could cost you significant amounts of money.


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