Thermo King Moisture-Indicating Sight Glass SGN #6 615144
Official OEM Thermo King parts catalog entry for the Thermo King Sight-Glass SGN #6 (615144), verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Sight-Glass SGN #6 (615144) delivers OEM-grade visual monitoring for Thermo King refrigeration systems, enabling quick verification of refrigerant condition, moisture presence, and liquid-line flow in transport refrigeration applications. This sight glass supports proactive maintenance and fast diagnostics to preserve temperature control and fleet uptime.
The Sight-Glass SGN #6 integrates with liquid lines on transport refrigeration units and provides a reliable, immediate indication of refrigerant clarity and moisture content, helping technicians identify contamination or service needs before they impact cargo integrity.
- Moisture Indicator – Visual color change and clarity signal moisture presence, supporting timely filtration and dryer service to protect system components.
- Flow Confirmation – Clear sight into liquid-line condition allows rapid verification of refrigerant flow during commissioning and troubleshooting.
- OEM Compatibility – Designed for Thermo King transport refrigeration systems to ensure precise fitment and reliable system integration.
- Serviceability – Simplifies on-vehicle inspections and reduces diagnostic time, improving uptime for reefers and refrigerated fleets.
- Fleet Reliability – Supports predictive maintenance practices that reduce unplanned stops and protect perishable cargo across West Texas routes.
Product Details
The Thermo King Sight-Glass SGN #6 (part 615144) is a moisture-indicating sight glass engineered for use in the liquid line of transport refrigeration circuits. It provides direct visual confirmation of refrigerant clarity and moisture status and is compatible with common refrigerant families used in Thermo King systems, including HFC and HCFC types. Technicians use this sight glass as part of routine inspections and during service procedures to confirm proper refrigerant flow and to identify potential contamination or moisture ingress that can compromise temperature control.
Efficiency & Sustainability
By enabling early detection of moisture and contaminants, the Sight-Glass SGN #6 helps maintain system efficiency and reduces the risk of component damage that leads to refrigerant loss or increased energy use. Proper monitoring supports temperature control consistency across reefer trailers and refrigerated trucks and aligns with modern fleet goals for fuel-efficient cooling and regulatory awareness, including integration with Smart Reefer SR-4 control strategies where applicable.
Installation & Maintenance Tips
Install using OEM-approved fittings and torque specifications for leak-free service. Inspect the sight glass during scheduled maintenance intervals and whenever a moisture or flow concern arises. Replace filter driers and address moisture indications promptly to maintain temperature precision and avoid compressor damage.
Real-World Applications
The Sight-Glass SGN #6 serves refrigerated trailers, truck-mount reefers, and transport refrigeration units used in regional and long-haul operations across Amarillo, Lubbock, Odessa, and the Permian Basin. Fleet technicians use this sight glass for pre-trip checks, post-service validation, and in-line monitoring to protect perishable loads and maximize asset availability.
Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
View all Thermo King PartsBacked by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.
Frequently Asked Questions
Q: Is the Sight-Glass SGN #6 compatible with Thermo King Precedent and S-610 series units?
A: Yes, the Sight-Glass SGN #6 integrates with Thermo King transport refrigeration liquid-line applications and supports common Thermo King platform maintenance and diagnostics.
Q: How does the sight glass help reduce downtime?
A: The sight glass provides immediate visual indication of refrigerant clarity and moisture, enabling technicians to identify and address issues before they escalate into component failure or cargo temperature loss, improving uptime and ROI.
Q: What maintenance action is required if the sight glass shows moisture?
A: When moisture indication appears, replace filter driers and perform system evacuation and recharge per OEM procedures to restore refrigerant integrity and preserve system efficiency.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
Official OEM Thermo King parts catalog entry for the Thermo King Sight-Glass SGN #6 (615144), verified by PEAK Thermo King and West Texas Thermo King Texas, Utah, Wyoming, Washington, Oregon, serving all of the USA.
Built for Performance: The Thermo King Sight-Glass SGN #6 (615144) delivers OEM-grade visual monitoring for Thermo King refrigeration systems, enabling quick verification of refrigerant condition, moisture presence, and liquid-line flow in transport refrigeration applications. This sight glass supports proactive maintenance and fast diagnostics to preserve temperature control and fleet uptime.
The Sight-Glass SGN #6 integrates with liquid lines on transport refrigeration units and provides a reliable, immediate indication of refrigerant clarity and moisture content, helping technicians identify contamination or service needs before they impact cargo integrity.
- Moisture Indicator – Visual color change and clarity signal moisture presence, supporting timely filtration and dryer service to protect system components.
- Flow Confirmation – Clear sight into liquid-line condition allows rapid verification of refrigerant flow during commissioning and troubleshooting.
- OEM Compatibility – Designed for Thermo King transport refrigeration systems to ensure precise fitment and reliable system integration.
- Serviceability – Simplifies on-vehicle inspections and reduces diagnostic time, improving uptime for reefers and refrigerated fleets.
- Fleet Reliability – Supports predictive maintenance practices that reduce unplanned stops and protect perishable cargo across West Texas routes.
Product Details
The Thermo King Sight-Glass SGN #6 (part 615144) is a moisture-indicating sight glass engineered for use in the liquid line of transport refrigeration circuits. It provides direct visual confirmation of refrigerant clarity and moisture status and is compatible with common refrigerant families used in Thermo King systems, including HFC and HCFC types. Technicians use this sight glass as part of routine inspections and during service procedures to confirm proper refrigerant flow and to identify potential contamination or moisture ingress that can compromise temperature control.
Efficiency & Sustainability
By enabling early detection of moisture and contaminants, the Sight-Glass SGN #6 helps maintain system efficiency and reduces the risk of component damage that leads to refrigerant loss or increased energy use. Proper monitoring supports temperature control consistency across reefer trailers and refrigerated trucks and aligns with modern fleet goals for fuel-efficient cooling and regulatory awareness, including integration with Smart Reefer SR-4 control strategies where applicable.
Installation & Maintenance Tips
Install using OEM-approved fittings and torque specifications for leak-free service. Inspect the sight glass during scheduled maintenance intervals and whenever a moisture or flow concern arises. Replace filter driers and address moisture indications promptly to maintain temperature precision and avoid compressor damage.
Real-World Applications
The Sight-Glass SGN #6 serves refrigerated trailers, truck-mount reefers, and transport refrigeration units used in regional and long-haul operations across Amarillo, Lubbock, Odessa, and the Permian Basin. Fleet technicians use this sight glass for pre-trip checks, post-service validation, and in-line monitoring to protect perishable loads and maximize asset availability.
Available for installation and service in Amarillo, Lubbock, Odessa, and throughout West Texas.
View all Thermo King PartsBacked by Thermo King’s engineering and supported by certified technicians at West Texas Thermo King, this component delivers lasting performance and uptime assurance for fleet operations.
For product verification or service assistance, call (806) 376-5837.
For current warranty eligibility or OEM replacement coverage, please contact us for warranty information or contact the service department for confirmation.
Frequently Asked Questions
Q: Is the Sight-Glass SGN #6 compatible with Thermo King Precedent and S-610 series units?
A: Yes, the Sight-Glass SGN #6 integrates with Thermo King transport refrigeration liquid-line applications and supports common Thermo King platform maintenance and diagnostics.
Q: How does the sight glass help reduce downtime?
A: The sight glass provides immediate visual indication of refrigerant clarity and moisture, enabling technicians to identify and address issues before they escalate into component failure or cargo temperature loss, improving uptime and ROI.
Q: What maintenance action is required if the sight glass shows moisture?
A: When moisture indication appears, replace filter driers and perform system evacuation and recharge per OEM procedures to restore refrigerant integrity and preserve system efficiency.
Ask about fleet-wide parts programs through West Texas Thermo King.
Produced by a certified Thermo King dealership, West Texas Thermo King | a Division of PEAK Industrial. Servicing fleets across Amarillo, Lubbock, and Odessa.
