Description
Trane GLS0931 — 1 1/8″ Sight Glass Indicator
The Trane GLS0931 is a 1 1/8″ sight glass indicator engineered to give HVAC and refrigeration technicians a clear, real-time view of refrigerant flow conditions within a system. Designed to Trane’s exacting quality standards, this sight glass allows service professionals to quickly identify flash gas, verify proper refrigerant charge, and detect moisture contamination — all without interrupting system operation.
Key Features
- 1 1/8″ connection size for compatibility with a wide range of refrigeration and HVAC systems
- Clear sight glass window provides an unobstructed view of refrigerant flow
- Moisture indicator element signals the presence of harmful moisture in the refrigerant circuit
- Durable construction built to withstand the demands of commercial and residential HVAC applications
- Genuine Trane OEM replacement part for reliable, long-term performance
- Easy to install in-line on suction or liquid refrigerant lines
Why Use a Sight Glass Indicator?
A sight glass indicator is an essential diagnostic tool built directly into the refrigerant circuit. It allows technicians to visually confirm that refrigerant is flowing correctly — free of flash gas and bubbles that indicate an undercharged system — and to monitor for moisture that can cause acid formation, compressor damage, and system failure. The integrated moisture indicator changes color to alert technicians to unsafe moisture levels before costly damage occurs.
Applications
- Commercial and residential refrigeration systems
- Air conditioning and heat pump systems
- Trane OEM equipment requiring GLS0931 replacement sight glass
- Any refrigeration circuit utilizing 1 1/8″ line connections
Product Specifications
- Brand: Trane
- Part Number: GLS0931
- Connection Size: 1 1/8″
- Type: Sight Glass with Moisture Indicator
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