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Supermarket Refrigeration Case Parts: A Guide

Supermarket refrigeration cases play a crucial role in preserving the freshness and quality of perishable products, ensuring a safe and enjoyable shopping experience for customers. These cases rely on a variety of specialized parts to function effectively and efficiently. Here are some parts you may have to order for your store's refrigerator cases.


Compressors are the heart of any refrigeration system, responsible for compressing the refrigerant gas and raising its temperature and pressure. This process enables the refrigerant to absorb heat from the refrigerated space and release it outside, thus maintaining the desired temperature inside the case. 

There are several types of compressors used in supermarket refrigeration cases, including reciprocating, scroll, and rotary compressors, each with their unique advantages and characteristics.


Evaporators play a key role in the refrigeration cycle by facilitating the transfer of heat from the refrigerated space to the refrigerant. As the refrigerant flows through the evaporator coil, it absorbs heat from the surrounding air, causing the refrigerant to evaporate and cool the interior of the case. 

Evaporators come in various designs, such as finned, plate, and tube-and-shell, which are selected based on factors like case size, cooling capacity, and temperature requirements.


Condensers release the heat absorbed by the refrigerant during the evaporative process. This is achieved by transforming the refrigerant from a high-pressure gas to a liquid state, allowing it to release its heat and subsequently be cooled.

Your refrigeration cases could have air-cooled, water-cooled, or evaporative condensers.

Expansion Valves

Expansion valves regulate the flow of refrigerant into the evaporator, ensuring the proper balance between refrigerant supply and cooling demand. These valves can be either thermostatic or electronic, with the latter offering more precise control and improved energy efficiency. 

By maintaining the correct refrigerant flow, expansion valves help optimize the refrigeration system's performance and prevent issues such as frost buildup or inadequate cooling.

Fan Motors and Blades

Fan motors and blades facilitate air circulation and ensure uniform temperature distribution within the case. They're found in both the evaporator and condenser units.

Door Gaskets

All door gaskets should be in good condition. Gaskets create an airtight seal between the case's doors and the frame, preventing cold air from escaping and warm air from entering. Over time, gaskets can become worn or damaged, leading to energy loss and reduced cooling efficiency. They should be replaced once worn out. 

Door Hardware

Door hardware, such as hinges, handles, and closers, must be operational. It should be replaced if it is malfunctioning or if it's unsightly and customers can see the hardware.

Keep these supermarket refrigeration case parts in mind when looking for a local supplier.