Because refrigeration installations can differ widely (layout, refrigerant type, service access, pressure levels), solenoid valves come in multiple styles and configurations. Choosing the right version is important for both performance and long-term serviceability.
Different styles and configurations
Refrigeration solenoid valves are available in a range of shapes and body designs, depending on how and where they are installed. Common differences include:
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Body design and port orientation (straight, angled, compact bodies for tight spaces)
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Connection type (threaded or braze-in)
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Coil configuration (with coil supplied, or valve body only)
This flexibility makes solenoid valves suitable for both new installations and replacements in existing systems.
Threaded vs braze-in solenoid valves
Threaded solenoid valves
Threaded versions are typically chosen when easy installation, removal, or replacement is important. They are convenient for service work, especially in systems where downtime needs to be minimal. Threaded models can be a good choice in applications where the system design allows enough space for tools and access.
Braze-in solenoid valves
Braze-in (solder/brazed) versions are widely used in refrigeration because they create a strong, compact, and durable connection. They are often preferred in professional cooling systems where vibration resistance and long-term reliability are key. Braze-in valves are also common when the piping layout is fixed and a clean, permanent connection is desired.
With coil or without coil
Solenoid valves are available:
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With coil included: ideal when you want a complete, ready-to-install solution and guaranteed compatibility between valve and coil.
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Without coil (valve body only): useful when a coil is already present, when you want to match a specific voltage, or when maintenance requires replacing only the valve body.
In refrigeration service, this matters because coils can be selected based on the electrical requirements of the installation (for example, different voltages depending on region or equipment type) and the environment (heat, moisture, continuous duty).
Trusted brands in refrigeration: Castel, Refco, Olab
For professional refrigeration applications, brands such as Castel, Refco, and Olab are widely used. They offer solenoid valves in multiple formats—threaded and braze-in—plus options supplied with coil or as valve bodies only. This makes it easier to match the correct valve to the system design, service approach, and available components.
Typical applications in HoReCa and marine environments
Solenoid valves are commonly used in:
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Reach-in refrigerators and freezers
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Walk-in cold rooms and freezer rooms
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Refrigerated prep counters and storage units
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Shipboard refrigeration systems and galleys
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Commercial cooling systems where stable temperature control is required
