Sporlan 700546 SA-19S Sight Glass

The Sporlan 700546 SA-19S Sight Glass is a critical diagnostic component for commercial refrigeration and air conditioning systems, providing technicians with a real-time 1-1/8 inch moisture liquid indicator. Engineered as part of the See-All series, this 1-1/8 ODF solder sight glass features a high-visibility fused glass disc that allows for immediate identification of bubbles, indicating a shortage of refrigerant or liquid line restrictions. The integrated refrigerant moisture indicator uses a chemically impregnated paper that changes from green (dry) to yellow (wet) to signal system contamination. This HVAC sight glass is fully compatible with modern refrigerants, including R-134a, R-404A, R-407C, R-410A, and R-507. Built with a rugged copper-plated steel body and extended 1-1/8" ODF connections, the SA-19S facilitates easier brazing by reducing heat transfer to the sensitive indicator element. With a maximum rated pressure of 650 psig, it is designed to withstand high-pressure liquid line environments while maintaining accuracy across a wide temperature range.

• Universal Compatibility: One indicator accurately monitors moisture levels for R-22, R-134a, R-404A, R-407C, R-410A, and R-507.
• High Visibility: Features an extra-large crystal-clear sight glass for easy observation of refrigerant flow and flash gas.
• Simplified Installation: Extended 1-1/8 ODF steel fittings allow for brazing without disassembly, saving time on the job site.
• Replaceable Element: If the moisture indicator becomes contaminated or damaged, the internal element can be replaced using a K-SA-4 kit without removing the body from the line.
• Protective Design: Includes a filter pad and screen to protect the indicator from system debris and a double-duty plastic cap to keep the glass free from job-site dust and grease.

What do the different colors mean on the Sporlan See-All indicator?
A dark green color indicates that the refrigerant is in a "dry" state within the safe operating range. A bright yellow color indicates a "wet" condition, signifying that moisture levels have reached a point that requires a filter-drier replacement to prevent acid formation or compressor damage.

Is the color change reversible?
Yes, the indicator is fully reversible. Once a technician installs a new filter-drier and removes the moisture from the system, the indicator will return to green as the relative saturation of the refrigerant decreases.

Do I need to disassemble the SA-19S before brazing it into the line?
No disassembly is required for these smaller steel-bodied models. Because steel conducts heat significantly slower than copper, the extended fittings prevent the internal indicator and glass seal from reaching damaging temperatures during standard brazing procedures.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.