Summary
Ours Coated pumps are made with the technology of transfer molding and represent a fundamental part of the production of CDR with regard to applications in the chemical and pharmaceutical fields.
These are essential devices for transporting highly corrosive or abrasive fluids: their internal lining of thermoplastic or elastomeric materials guarantees chemical and mechanical resistance, increasing the equipment's operational lifespan.
Transfer molding“
The “Transfer Molding” It is a molding technique that combines elements of compression and injection molding. The polymer material is first heated in a separate chamber and then forced into a closed mold through a runner system.
This methodology's main result is a high-thickness coating, ensuring superior vacuum resistance compared to other molding technologies such as “Rotational molding”Rotational molding“, which instead uses heat and rotational movement to evenly distribute the plastic material inside a mold.
Compared to plastic pumps with components machined from solid or made with injection molding, Lined pumps manufactured with Transfer Molding“ensure greater dimensional stability all various temperatures and also greater resistance to the pressures and loads applied to the suction and discharge flanges. Furthermore, this method reduces the risk of voids or inhomogeneities that could compromise the chemical resistance of the product.
This therefore refers to a procedure that requires advanced technologies and ensures maximum quality in those more critical environments that require complete isolation of the content, even in very delicate parts of the system.
The Lined CDR Pumps: Highest quality and safety products
The importance of Lined pump In the chemical and pharmaceutical sectors, this led us to implement them by leveraging the technology of the mechanical seal What a shame magnetic drag. In this way, we can meet the needs of both customers who require pumping of slightly dirty liquids or those with suspended particulate matter, and customers who require more critical and delicate applications, where plant safety and reliability are paramount:
For mechanical seals, CDR Pompe offers two models:
- CCL/CCL-B, a closed impeller, is characterized by a lined coating of the wetted parts in PP (Polypropylene);
- UCL, single-stage process pump with mechanical seal, lined with plastic and fluoroplastic material. This model is also available in Polypropylene, PVDF (Polyvinylidene fluoride) e PFA (perfluoroalkoxy).
For magnetic drive pumps, however:
- ETN-EVO, pump magnetic drive with plastic coating e fluoroplastic Sub-ISO 2858, ideal for pumping aggressive and hazardous liquids;
- UTN, a closed impeller and horizontal execution;
- Gamma DTN (DTN ASME e DTN ISO), whose new execution with a dynamic tree guarantees greater pump reliability minor axial thrust.
The advantages of Lined CDR pumps
Compared to traditional pumps, the Lined CDR pump created with the technique of transfer molding they offer a series of clear and verifiable advantages.
First, they exhibit extremely high chemical resistance. The materials used in their design (PP, PVDF, ETFE, and PFA) ensure immense resistance to aggressive chemicals, such as strong acids, bases, and solvents. This prevents both corrosion and product deterioration, extending their useful life and reducing the risk of problems and the need for routine maintenance.
As we explained in this article, it is essential to avoid product contamination in the pharmaceutical and fine chemical industries. Plastic coatings offer enormous advantages in this regard, as they guarantee non-reactive surfaces, avoiding contamination and meeting high purity standards.
In the pharmaceutical and chemical sectors, as we've explained, the delicacy of the substances being handled makes them quite unique. Besides preventing contamination, another principle to adhere to is minimizing leaks as much as possible. Combined with magnetic drive technology, a lined pump manufactured using transfer molding guarantees an extremely high level of safety for both operators and the work environment.
Finally, another advantage of lined pumps is their enormous resistance to high temperatures and pressure: the plastic lining that comes into contact with the process is molded onto a mechanically resistant part of the pump, such as pump bodies where the mechanically resistant part is made of cast iron.
From chemistry to water treatment: Lined pumps are suitable for many different sectors
The CDR coated pumps, made with transfer molding, have unique features In terms of chemical and mechanical resistance.
for this reason, they are used in some sectors of’chemical industry such as the production of acids, solvents, and synthetic products, areas where operational safety and environmental respect are crucial factors. In the’petrochemical industry which produces semi-finished products derived mainly from methane or hydrocarbons obtained from petroleum distillation, CDR Lined pumps are fundamental in the handling of dangerous substances.
Here at CDR, we have gained extensive experience not only in the chemical sector, but also in the design of versatile, high-performance pumps for the water treatment. The know-how we possess has allowed us to create ranges of lined pumps suitable for the needs of this extremely delicate sector, such as the handling of wastewater, the treatment of drinking water, and the management of aggressive fluids.
Another area that requires attention to contamination and fluid loss is pharmaceutical, which is distinguished by the use of high-value-added fluids, essential for the production of drugs and treatments that require maximum purity and precision. For synthesis processes and the transfer of pure substances, lined pumps ensure efficiency, quality, and an extremely high safety standard.
The Lined CDR pumps made with the “Transfer Molding” technique, or transfer molding, they represent an ideal choice for handling corrosive and high-purity fluids, while ensuring high performance, protection, and resistance. Their use helps to reduce operating and maintenance costs, optimizing system efficiency.
Trust CDR for the manufacturing of process pumps for your company. As a leader in the industry, we guarantee continuous assistance, maintenance, and extremely high-quality products.