Ensure the health and efficiency of your refrigeration and HVAC equipment with the Castel Ø 12 mm Humidity Indicator. When moisture enters the system, the indicator shifts from blue to pink/red, giving you an immediate, easy-to-read alert.
Instant Color Alerts: Clear visual change for fast moisture detection.
Ø 12 mm Standard Thread: Seamless integration into refrigerant lines.
Rugged Brass Body: Corrosion-resistant materials for reliable durability.
Models 3940/M12 & 3740/M12: Designed for compatibility and low-maintenance operation.
Rely on Castel’s precision-engineered humidity indicators to simplify maintenance, prevent moisture damage, and extend equipment life—order yours today.
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This part is compatible to the original part number. Part numbers are always leading.
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