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Sight Glasses
Monitor Moisture and Refrigerant Flow with Precision
Maintain system performance and ensure proper refrigerant charge with high-quality sight glasses designed for HVAC and refrigeration applications. At HVACProSales.com, we carry OEM-grade moisture and flow indicators that help technicians quickly diagnose system conditions.
Perfect for liquid lines, suction lines, and receiver applications, these sight glasses provide a clear visual of refrigerant flow and moisture contamination—essential for preventive maintenance and system troubleshooting.
- Color-changing moisture indicators for fast diagnosis
- High-visibility glass lenses for accurate readings
- Brass or stainless-steel bodies for durability
- Compatible with all major refrigerants (R-22, R-410A, R-32)
- OEM and universal fit options available
Discover related categories like HVAC Controls & Sensors and Solenoid Valves to complete your refrigeration diagnostic toolkit.
Sight Glasses — Liquid Visibility for Accurate Charging
This alternate listing of sight glasses helps technicians locate model-specific parts quickly. Moisture-indicating windows and solid brass bodies deliver durable, trustworthy diagnostics in the liquid line.
Install with proper flow direction and insulate when necessary to prevent condensation from obscuring readings.
Coordinate with filter driers, receivers, and metering devices like TXVs. Add access valves for testing and charging hoses for service.