The Castel 3910/22 moisture indicator is engineered to help technicians monitor moisture levels within refrigeration and air conditioning systems. Featuring a 1/4″ male flare connection, it installs easily into compatible refrigerant lines and provides a clear viewing window that changes indication according to moisture presence. Built for professional use, this indicator helps protect system components, improve maintenance accuracy, and ensure reliable performance in commercial and industrial cooling environments.

Key Benefits

Provides clear visual indication of moisture presence in the system
Helps protect components from moisture-related damage
Supports accurate diagnostics and maintenance operations
Durable construction suitable for professional HVAC use
Improves reliability and efficiency of refrigeration systems

Specifications

Product Type: Moisture Indicator
Model: 3910/22
Connection Size: 1/4″ Male Flare
Category: Refrigeration Valves & Accessories
Sub-Category: Sight Glasses & Moisture Indicators
Application: Refrigeration and air conditioning systems
Function: Visual monitoring of moisture condition
Brand: Castel

Applications

Monitoring moisture levels in HVAC systems
Refrigeration system diagnostics and inspection
Commercial and industrial cooling maintenance
Professional HVAC servicing operations

FAQs

What does the 3910/22 moisture indicator do?
It visually indicates moisture presence within the refrigeration system.

What connection type does this indicator use?
It features a 1/4″ male flare connection.

Why is moisture monitoring important in refrigeration systems?
Moisture can cause corrosion, freezing, and system performance issues, so early detection is critical.

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

Does it help improve maintenance efficiency?
Yes, it allows technicians to quickly evaluate system condition during servicing.