Sporlan 700247 SA-14 Sight Glass

The Sporlan 700247 SA-14 is a professional-grade See-All moisture and liquid indicator designed for high-performance HVACR systems. This 1/2 inch Male SAE flare sight glass provides simultaneous monitoring of both refrigerant level and moisture content, helping contractors identify issues like flash gas or system contamination before they lead to compressor failure. Built with a 650 PSI maximum working pressure, it is fully compatible with modern refrigerants, including R-410A, R-404A, R-22, R-134a, R-407C, and R-507. The unit features a unique, high-contrast porous filter paper indicator that shifts color based on the relative saturation of the refrigerant—changing from dark green (dry) to bright yellow (wet). This reversibility allows for continuous monitoring of moisture removal after a filter-drier change. The large full-view sight glass ensures clear visibility of bubbles, which frequently indicate a restriction in the liquid line or a low refrigerant charge.

• Universal Compatibility: Optimized for use with HCFC, HFC, and CFC refrigerants, including high-pressure R-410A systems.
• Precise Moisture Detection: Highly sensitive moisture indicator calibrated for specific PPM thresholds across various refrigerant types.
• Serviceable Design: Features a replaceable indicator element (kit K-SA-4) facilitating maintenance without removing the body from the line.
• Contamination Protection: A built-in filter pad and screen safeguard the indicator from turbulence and debris, ensuring long-term color accuracy.
• Durable Construction: Features polyester-coated steel for corrosion resistance and a fused glass-to-metal seal for leak-free performance up to 650 PSI.

What do bubbles in the sight glass indicate during operation?
Bubbles generally signify a shortage of refrigerant or a pressure drop causing flash gas in the liquid line. However, bubbles may appear temporarily during startup or if the expansion valve is hunting.

Can the moisture indicator be replaced if it becomes contaminated?
Yes, the Sporlan SA-14 is designed with a removable element. Unlike cheaper alternatives, you can swap the internal paper indicator using a standard service kit if the glass becomes stained or the sensor is damaged by acid.

How sensitive is the color change on this model?
The indicator is accurately calibrated to change at moisture levels generally accepted as the safe operating range for the compressor. Note that liquid line temperature affects the color reading; always refer to the provided color chart for accurate PPM assessment.

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.