Everyday we employ all our experience to improve the existing products and to design new projects in order to satisfy our customers’ needs. We live in the present and we design the pumps of the future without forgetting where we started.
Over the years we developed the series that now includes 9 sizes: HTM 4, HTM 6, HTM 10, HTM 15, HTM 31, HTM 40, HTM 50, HTM 80, HTM 100. Each size is available in two thermoplastic materials: PP (polypropylene) and PVDF.
The HTM are high-quality pumps, extremely reliable and versatile, and they are still our bestsellers.
Which are the 7 strong points of these mag drive centrifugal pumps?
The HTM pumps are manufactured in thermoplastic materials, PP or PVDF. These anti-corrosion materials are compatible with the great majority of the acids, chemicals and dangerous liquids.
The plastic parts of our HTM are manufactured by Gemme Plast, another company in the GemmeCotti group, which is specialized in the injection moulding of plastic. Thanks to this cooperation, we can check all the raw materials used and we have total control over the moulding process.
3.LEAKLESS MAGNETIC DESIGN
Advantages of the magnetic drive system:
no mechanical seal
no leakage or emissions
no waste of liquids
environmental sustainability
reliability and safety
low maintenance and consequent long term savings
no need for a pump-motor alignment
Please note that the liquid must be clean and without solids in suspension (acceptable quantity and dimensions of the solids: max 2% – max 1mm).
Unlike most centrifugal pumps on the market, the pump head of the HTM is secured to the bracket with 8 bolts. This feature allows the safe fastening of the pump head, ensuring the static seal and avoiding the deformation of the pump head due to the pressure.
5.BEARINGS
The wide dimensions of the frontal bearings ensure the high resistance to the axial thrusts.
6.STATIC SHAFT
The static shaft of the mag drive centrifugal pumps HTM is made of alumina (Al2O3), an extremely robust ceramic material that ensures great stability and resistance to most hazardous liquids.
7.MAGNETS
The HTM pumps series are equipped with a high magnetic coupling created with magnets made of NdFeB. Thanks to this particular feature, the internal and external magnets won’t detach from each other while the pump is operating.
OUR COMMERCIAL DEPARTMENT IS AVAILABLE FROM MONDAY TO FRIDAY, FROM 8.30 TO 12.30 AND FROM 14.00 TO 18.00 TO HELP YOU SELECT THE BEST CHEMICAL PUMP FOR YOUR APPLICATIONS.
APPLICATION: CHEMICAL PUMPS TO UNLOAD TANKER TRUCKS AND RAILROAD TANK CARS
GemmeCotti supplies industrial pumps suitable to unload railroad tank cars and tanker trucks containing acids and toxic chemicals.
We offer three possible solutions for this application:
installation of one pump for each single tank
installation of the pump directly aboard the vehicle (GemmeCotti series HTM or series HCO)
use of the portable pumpH-IBC (GemmeCotti series HTM 10)
SPECIFIC REQUIREMENTS FOR THIS APPLICATION: WHICH ARE THE BEST PUMPS FOR TANKERS OFFLOADING?
The right pumping solution for unloading and transferring dangerous liquids from vehicles (trucks or railroad tank cars) is selected according to the chemical compatibility and the requested performances.
GemmeCotti pumps are the best choice to transfer dangerous or hazardous goods, i.e. all the substances which, due to their peculiar properties, could be harmful for the environment or the people involved.
These liquids are classified according to their characteristics and degree of danger. In Europe, the transportation of toxic chemicals is regulated by specific laws:
ADR: agreement concerning the international transport of dangerous goods by road
RID: international carriage of dangerous goods by rail
ADN: carriage of dangerous goods by inland waterways
GemmeCotti is proud to offer pumping solutions for the safe handling of chemicals: we supply chemical pumps suitable for the safe offloading of the great majority of dangerous or hazardous goods.
The GemmeCotti pumps installed on means of transport and involved in the unloading process, permit to direct and move the fluids in total safety, ensuring quick execution.
For this application, GemmeCotti recommends:
magnetic drive centrifugal pumps series HTM PP/PVDF
mechanical seal centrifugal pumps series HCO
The design of these two types of centrifugal pumps, permits the safe installation both on land and aboard the vehicle, ensuring a constant flow without the risk of leakage or emissions.
Another practical and effective solution is the use of the GemmeCotti portable pump series H-IBC.
GemmeCotti H-IBC has been designed as a safe and reliable mobile pump specifically for the safe unloading of IBC containers. The unit consists of a magnetic centrifugal pump HTM 10 mounted in a robust carry case, conceived to be easy to move. Thanks to its fast connections, H-IBC is a really flexible solution: the pump could be easily removed from the IBC container and placed in another one according to the requirements. This quick and efficient unit is suitable for several applications. Moreover, the pump is equipped with an electric panel and a start and stop switch for easy, quick and safe use.
Upon request, H-IBC pumps can be supplied in a premium version with wheels, for easier movement and transportation.
HOW TO AVOID THE RISK OF DRY RUNNING DURING THE PROCESS OF TANKERS UNLOADING?
To prevent damages to the pumps due to the lack of liquid, GemmeCotti supplies the dry running protection device. This device is particularly recommended during the operations of tanker unloading and for all the applications in which there is the risk of liquid shortage.
Thanks to the adjustable threshold and timer, it is possible to set up the minimum power and operation time of the device. If the power is lower than the set value, the pump will automatically stop.
Main features of the dry running protection device:
MAGNETIC DRIVE CENTRIFUGAL PUMPS AND MECHANICAL SEAL PUMPS
It is fundamental to choose the right pump model when dealing with acids or corrosive liquids. For the operations of tanker unloading, GemmeCotti suggests the use of mechanical seal centrifugal pumps or magnetic centrifugal pumps. The type of pump is selected according to the liquid to be pumped and to the requested working point.
MAGNETIC DRIVE CENTRIFUGAL PUMPS
Mag drive pumps have a sealless design that is particularly suitable to pump corrosive and dangerous liquids; the magnetic design together with the usage of anticorrosive materials, guarantees the high chemical resistance and the absence of leakage and emissions.
Moreover, the structure of magnetic drive pumps is really simple and requires very little maintenance with a consequent saving in terms of repairs and spare parts expenses during the pump life. The external magnet placed on the drive shaft transmits the motion to the internal magnet connected to the impeller, which rotates and moves the fluids through the pump.
MECHANICAL SEAL PUMPS
Mechanical seal centrifugal pumps are the best solution when the liquid has solids in suspension: their design with open impeller permits to transfer dirty liquids and fluids with high viscosity.
The seal of these pumps is composed of a static ring and a rotating ring placed on the pump shaft, which is directly coupled to the motor shaft. When the pump is working, the two rings’ surfaces slide together and the lubrication of the parts is granted by the pumped liquid.
GemmeCotti supplies pumps for chemicals suitable for the offloading process of tanker trucks, petrol tankers and railroad tank cars. Our industrial pumps allow you to unload the fluids with the maximum efficiency, ensuring safety, reliability and saving in terms of repairs and spare parts expenses.
Upon request, GemmeCotti pumps can be supplied with single phase motors and in ATEX version for potentially explosive areas.
Contact us: info@gemmecotti.com
Our sales department is available from Monday to Friday, from 8.30 to 12.30 and from 12.30 to 14.00, to select the best chemical pump for your needs.
GemmeCotti supplies air-operated double diaphragm pumps suitable to transfer aggressive liquids with high viscosity and solids in suspension.
The main feature of HAOD pumps is their versatility: these volumetric self-priming pumps are suitable for applications in chemical and pharmaceutical industries and in water treatment plants. Moreover HAOD pumps are commonly used in dosing systems and they are usable for trucks or barrels.
HAOD assure high pressures and high heads in addition to the compatibility with a wide selection of liquids. HAOD pumps are built with an anti-stalling pneumatic circuit which ensures the highest possible level of security and efficiency and doesn’t require lubricated air: the ecological design guarantees a reduction in the air consumption.
Moreover, HAOD are fast and easy to assemble without the use of special tools.
HAOD pneumatic pumps are available in several materials and dimensions: diaphragms are made of PTFE while the pump body can be manufactured in thermoplastic materials (PP or PVDF) or metallic materials (stainless steel AISI 316).
Air-operated double diaphragm pumps are available in ATEX version for potentially explosive atmosphere classified zone 2 II3G.
MAIN FEATURES:
• Available in PP, PVDF and AISI316;
• Max. Temperature:
PP: 60° C – PVDF: 95° C – AISI 316: 95°;
• Adjustable capacity and head;
• Adjustable speed without pressure loss.
GemmeCotti supplies ATEX pumps for potentially explosive atmospheres. Our ATEX EM series are suitable for ZONE 1 II2G and ZONE 2 II3G classified areas.
ATEX is an abbreviation for the French term “ATmosphères EXplosibles“, which translates to “Explosive Atmospheres” in English.It refers to the European Union’s directives for regulating equipment and protective systems intended for use in potentially explosive atmospheres.These directives aim to protect workers from the risks associated with explosive environments.
What is the ATEX standard for the EU?
The ATEX standard for the EU is actually a set of directives that aim to protect workers from explosion risks in hazardous environments.There are two main directives, all our pumps comply with the technical and safety requirements ofATEX Directive 2014/34/EU The Directive states that the manufacturers of equipment intended for use in potentially explosive atmospheres shall draw up a written declaration of conformity of these products.
How are the ATEX Zones classified?
The term “ZONE 1” indicates an area where an explosive atmosphere consisting of a mixture of air or flammable substances (gas, vapour or mist) is likely to occur in normal operation occasionally.
The term “ZONE 2” indicates an area where an explosive atmosphere consisting of a mixture of air and flammable substances (gas, vapour or mist) is not likely to occur in normal operation. If it does occur, it will persist for a short period only.
What does GemmeCotti offer for potentially explosive atmospheres?
GemmeCotti ATEX pumps for potentially explosive atmospheres EM series includes 3 metallic pumps (AISI 316) and 6 plastic pumps (PP/PVDF).
ATEX PUMPS made of stainless steel AISI 316 suitable for ATEX ZONE 1 II2G and ZONE 2 II3G:
Luca is an electrical engineering technician and after an experience as a metalworker, he decided to continue his studies to become a mechanical expert. He has recently joined our workshop and he is ready to learn all about the production of GemmeCotti chemical pumps.
He is proactive and methodical, in his free time he loves designing and creating any sort of objects, and when his project is completed, he relaxes watching tv series: he is an Anime addicted!
Good luck for all your projects and for your new adventure in GemmeCotti, Luca!
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