HMD Kontro: Sealless Pumps

What is a sealless magnetic drive pump?

A sealless pump is essentially a conventional centrifugal pump without packed glands or mechanical seals. The dynamic seal that would normally be used to seal the impeller shaft is instead replaced by a static containment shell, or shroud, to form a completely sealed liquid end or pressure boundary.

Prime mover energy is transmitted to the sealed liquid end by a bank of external magnets, which pass force through the containment shell to the impeller shaft.

Why is it sealless?

Mechanical seals are designed to maintain their sealing capability by leaking small amounts of fluid as a means to keep the seal faces lubricated. This leakage then reaches the environment as either liquid or vapour via a process referred to as fugitive emission.

According to a report by the United Kingdom Health and Safety Executive, mechanical seals are widely regarded as the weakest point in any pumping system using them. They account for 80% of all pump failures, the remainder being leakage through static seals such as gaskets / O rings and bearing failure.  It follows that if you eliminate the problem, you eliminate the failures and save costs.

Sealless pumps don’t leak, meaning that they can help reduce process inefficiencies, maximise output and minimise the risks posed to your process environment by hazardous and volatile materials.

Furthermore, seals, like bearings, must wear. As they wear, the seal faces lose their effectiveness and liquid loss through the seal increases. These fugitive emissions can be costly, resulting in lost time and money, as well as decreased worksite safety.

Without these seals — which will ultimately fail, requiring expensive maintenance— our sealless magnetic drive pumps represent a cost-effective and highly reliable alternative to traditional sealed pump designs.

What else is different?

The containment shell of a HMD Pump is either of welded construction to ASME VIII pressure vessel standards and typically of 1.2mm thickness or the latest ZeroLoss® shell. This will improve efficiency and reduce equipment life cycle costs. Our competitors usually have hydroformed shells, which are much thinner and weaker than the HMD Kontro design.  Rotating parts are dynamically balanced ensuring smooth, quiet operation and longevity.

HMD Kontro pumps are a modular cartridge, which can reduce maintenance time considerably. This method of construction means that there are many common components for each of the three frame sizes throughout the range, reducing the need for a large stock of spare parts in a multiple pump installation.

The outer magnet ring is fully encapsulated, meaning that the magnets are protected from being chipped on assembly and against corrosion from the pumped liquid in the event of containment shell breach. It also means that the component can be easily cleaned in usual workshop conditions.

HMD Kontro’s high quality Sealless Pumps move hazardous and high value liquids with simplicity and in complete safety whilst ensuring maximum production output and profitability.

Sealless Magnetic Drive Pumps engineered to meet your needs

HMD Kontro offer a wide range of sealless magnetic drive pumps to suit your industry. Our pumps offer a wide range of benefits and advanced features.

Take a moment to see how our pumps can help revolutionise your process workflow.

The many benefits of HMD Kontro magnetic drive sealless pumps include:

• Product Security:  Our pumps provide a verysafe and robust method for liquid transfer. By eliminating seals, the primary opportunities for leaks associated with traditional sealed pumps are eradicated.
• Efficiency:  By improving performance and significantly reducing maintenance, sealless magnetic drive pumps can dramatically reduce downtime and lost production and thus maximise efficiency.
• Reliability:  Proven reliability in the most severe climate conditions, from the frozen Tundra of Siberia to the deserts of the Middle East and the humid climate of Louisiana, HMD Kontro pumps have been utilised worldwide.
• Health & Safety:  With no mechanical seals to leak your fluids including hazardous chemicals, HMD Kontro pumps offer a clear choice for process industry professionals, including those who deal with volatile or high value materials.
• Up To Standard: HMD Kontro sealless pumps are manufactured to conform to international design and safety standards, including ATEX, ISO, API and ANSI requirements.
• Operational Benefits:  Sealless magnetic drive pumps require less monitoring and maintenance than a traditional sealed designed, resulting in substantial savings over the lifetime of the pump.
• Service Team:  In addition to our own, highly experienced Aftermarket team, our Channel Partner service centres are situated all around the world and are designed to keep our sealless magnetic drive pumps operating at peak performance. Standard pumps and parts are available from the factory and in the field