The Castel 3710/22 sight glass is engineered to give HVAC and refrigeration technicians a dependable visual check of refrigerant flow and condition in the system. Featuring a 1/4″ flare connection, it enables easy installation with compatible line sizes and provides a clear viewing window to observe refrigerant state and moisture presence. Built for rugged performance and long service life, this sight glass is ideal for professional installation, inspection, and maintenance in commercial and industrial cooling applications.

Key Benefits

Provides clear visual inspection of refrigerant flow
Helps detect moisture and contaminants quickly
Facilitates faster and accurate system diagnostics
Durable design for professional HVAC and refrigeration use
Supports reliable system performance and maintenance

Specifications

Product Type: Sight Glass
Model: 3710/22
Connection Size: 1/4″ Flare
Category: Refrigeration Valves & Accessories
Sub-Category: Sight Glasses & Moisture Indicators
Application: Refrigeration and air conditioning systems
Function: Visual refrigerant flow and condition inspection
Brand: Castel

Applications

Monitoring refrigerant flow in HVAC systems
Refrigeration line inspection
Moisture and contaminant detection
Professional HVAC and refrigeration maintenance

FAQs

What is the function of the 3710/22 sight glass?
It provides a clear visual indication of refrigerant flow and condition in the system.

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

Can it help detect moisture?
Yes, it allows technicians to see refrigerant clarity and moisture presence.

Is it suitable for professional HVAC service work?
Yes, it’s built for commercial and industrial HVAC and refrigeration maintenance.

Does it support accurate diagnostics?
Yes, the clear viewing window helps quickly assess system status.