Dorin compressors and condensing units

Dorin and Omnia Frigo: over thirty years of collaboration

For over thirty years, Omnia Frigo has been distributing Dorin compressors and condensing units, offering refrigeration professionals reliable products and advice based on in-depth knowledge of the range.

Such a long-standing partnership represents a concrete guarantee of expertise and continuity for our customers. For over thirty years, we have followed the evolution of Dorin products, refrigeration technologies, and refrigerants, gaining the experience necessary to identify the compressor best suited to the characteristics of each system.

Omnia Frigo supports installers, maintenance technicians, designers and manufacturers in the selection of compressors and condensing units for:

• commercial refrigeration;
• industrial refrigeration;
• air conditioning and HVAC applications;
• systems with traditional refrigerants;
• CO₂ systems;
• special applications.

Our service goes beyond product sales: we analyze operating conditions, verify the required configuration, and help the customer choose the most appropriate Dorin solution.

Dorin: over a century of experience in refrigeration

Officine Mario Dorin is an Italian company founded in 1918. Production of open compressors for refrigeration systems began in 1932, while in 1952 the company began producing semi-hermetic reciprocating compressors for refrigeration and air conditioning.

Throughout its history, Dorin has developed a complete and diversified range of compressors, building an international reputation based on mechanical expertise, innovation, efficiency and reliability.

Since the 1990s, the company has invested in developing technologies for the use of CO₂ as a refrigerant. Since 2004, Dorin has been recognized internationally as a leading manufacturer of compressors for transcritical CO₂ applications, as well as offering solutions for subcritical systems.

This ability to innovate, combined with Omnia Frigo's extensive distribution experience, allows us to offer solutions suitable for both traditional refrigeration systems and the latest technologies.

🔹 Dorin semi-hermetic compressors

Dorin semi-hermetic reciprocating compressors are intended for numerous commercial, industrial and air conditioning refrigeration applications.

The range includes the series:

• H;
• HEX;
• HEX_EM;
• HEP;
• HI;
• CDS;
• CD.

The different configurations allow us to meet different needs in terms of power, field of application, refrigerant and operating conditions.

Omnia Frigo supports the customer in selecting the model, evaluating fundamental parameters such as:

• required cooling capacity;
• evaporating temperature;
• condensing temperature;
• refrigerant used;
• power supply;
• operating range;
• type of application.

🔹 Double-stage semi-hermetic compressors

Dorin two-stage semi-hermetic compressors are designed for applications characterized by low evaporating temperatures and high compression ratios.

The range includes solutions for systems intended for freezing, low-temperature storage and other particularly demanding refrigeration applications.

The correct selection of a two-stage compressor requires a careful assessment of the project conditions. Omnia Frigo's experience with Dorin allows it to guide the customer in choosing the most appropriate configuration.

🔹 Tandem compressors

Dorin tandem configurations combine two compressors within the same system, offering more flexible management of cooling capacity.

These solutions find application in systems where the load varies during operation and it may be useful to divide the power across multiple compressors.

Omnia Frigo helps the customer evaluate the solution based on the load profile, operating conditions and system regulation needs.

🔹 Open compressors

Dorin open compressors represent a consolidated solution for numerous industrial, commercial, marine and transport applications.

The separation between compressor and motor allows coupling with different drive systems and makes this configuration suitable for systems with specific construction or operational requirements.

🔹 Air-cooled condensing units

Dorin air-cooled condensing units integrate compressor and condenser in a solution intended for various refrigeration applications.

They are suitable for systems in which the condensation heat is released directly into the outside air. Their compact design facilitates the design and construction of the refrigeration system.

🔹 Water condensing units

Dorin water condensing units are designed for systems where condensation occurs via a hydraulic circuit.

They can be used when installation conditions, available space or system characteristics make it preferable to dispose of heat through water or other cooling circuits.

🔹 Remote condensing units

Dorin remote condensing units allow the compressor to be connected to a separately installed condenser.

This solution offers greater freedom in system design and allows the condenser to be placed in the position best suited to heat dissipation, ventilation and acoustic requirements.

Dorin and CO₂ refrigeration

Dorin is one of the leading manufacturers in the development of reciprocating compressors for CO₂ systems.

The range includes solutions intended for subcritical and transcritical applications, used in commercial and industrial refrigeration, large-scale retail trade and other sectors where high performance and the use of natural refrigerants are required.

Selecting a CO₂ compressor requires a careful assessment of pressures, temperatures, and operating range. Omnia Frigo offers its experience with Dorin products to help customers identify the right solution.

Main applications

Dorin compressors are used in numerous sectors:

• supermarkets, hypermarkets and shopping centres;
• cold storage rooms and logistics centers;
• industrial refrigeration;
• food processing and preservation;
• dairies and ham factories;
• production and preservation of ice cream;
• pharmaceutical industry;
• cryopreservation and freeze-drying;
• railway air conditioning;
• naval refrigeration and air conditioning;
• refrigerated transport;
• HVAC applications.

Selection software and technical documentation

Dorin provides selection software to identify the products best suited to the system's operating conditions.

Omnia Frigo can assist the customer in collecting the necessary data and verifying the selection, integrating the information provided by the software with the application experience gained in over thirty years of Dorin distribution.

Catalogs, manuals, technical data sheets, and updated documentation are also available for the correct selection, installation, and management of products.

Why buy Dorin from Omnia Frigo?

Choosing Omnia Frigo for your Dorin compressor means relying on a company that has been distributing the brand for over thirty years.

This experience allows us to offer:

• in-depth knowledge of the Dorin range;
• advice on choosing the compressor;
• checking operating conditions;
• support in consulting technical documentation;
• identification of the most appropriate spare part or model;
• preparation of complete offers;preparation of complete offers;
• check availability and delivery times;check availability and delivery times;
• sales assistance before and after purchase.

The ongoing relationship with Dorin and our daily experience in refrigeration systems make Omnia Frigo a qualified partner for those seeking reliability, expertise, and concrete support.