Sporlan 700052 SA-12S Indicator

The Sporlan 700052, also identified as the SA-12S Indicator, is a high-performance 1/4" ODF moisture and liquid indicator engineered for the rigorous demands of modern HVACR systems. Featuring a See-All design, this sight glass provides a single, accurately calibrated element that monitors refrigerant moisture levels and liquid line subcooling across a wide range of gases, including R-410A, R-134a, R-404A, and R-407C. The ODF solder connections utilize extended fittings to simplify the brazing process, often eliminating the need for disassembly by reducing heat transfer to the internal indicator paper. A large full-view sightglass allows technicians to instantly identify flash gas or bubbles, signaling potential refrigerant shortages or restrictions. Unlike multi-element indicators that cause confusion, the Sporlan 700052 uses a reversible, wide-contrast color change—green for dry and yellow for wet—protected by a filter pad and screen to prevent contamination and turbulence from affecting readings.

• Multi-Refrigerant Compatibility: Single indicator calibrated for moisture detection in R-410A, R-22, R-134a, R-404A, R-407C, R-502, and R-507 systems.
• High Pressure Rating: Robust design with a maximum working pressure of 650 psi, suitable for high-pressure HFC refrigeration applications.
• Field Replaceable Element: Features a replaceable indicator element and paper (K-SA-4 kit compatible), allowing for maintenance without full system disassembly.
• Enhanced Visual Inspection: The extra-large crystal-clear glass provides a 100% unobstructed view for confirming a solid liquid column at the metering device.
• Integrated Protection: Includes a filter pad and double-duty plastic cap to safeguard the glass from dust, grease, and moisture washout.

• Does the SA-12S require disassembly before brazing? Thanks to extended steel fittings that conduct less heat than copper, the Sporlan 700052 typically does not require disassembly when using standard HVAC soldering techniques.
• Why is the indicator yellow right out of the box? The indicator element reacts to atmospheric humidity; once installed in a evacuated and dry system, it will quickly transition to green.
• Can I use this on a heat pump liquid line? Yes, the 1/4" ODF solder connection and 650 psi rating make it an ideal fit for residential heat pumps and commercial cooling units.

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.