Moisture Indicator 3/8″ F 3910/33 Castel

The Castel 3910/33 moisture indicator is used in HVAC and refrigeration systems to visually check refrigerant flow and moisture presence. The integrated sight glass and moisture-sensitive element change indication based on system condition, allowing quick assessment without dismantling the line.

Moisture inside a refrigeration system can cause corrosion, acid formation, and compressor damage. This indicator helps technicians identify potential issues early and take corrective action before serious damage occurs.

Built for professional applications, it is suitable for both commercial and industrial refrigeration systems.

Key Benefits

Provides clear visual refrigerant flow indication
Detects moisture presence in the system
Helps prevent moisture-related damage
Supports quick system diagnostics
Durable construction for long service life

Specifications

Brand: Castel
Model: 3910/33
Product Type: Moisture Indicator
Connection Size: 3/8 inch F
Connection Type: Flare connection
Function: Refrigerant flow and moisture indication
Body Material: Brass
Application: Refrigeration and air conditioning systems

Applications

Commercial refrigeration systems
Air conditioning installations
Cold storage units
Industrial cooling systems
HVAC maintenance and inspection work

FAQs

What does this moisture indicator show?
It shows refrigerant flow and indicates whether moisture is present in the system.

Why is moisture monitoring important?
Excess moisture can damage system components and reduce efficiency.

What type of connection does it use?
It uses a 3/8″ flare connection.

Is it suitable for commercial HVAC systems?
Yes, it is designed for professional refrigeration and air conditioning use.