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The sight glass is used to indicate:
1. The refrigerant condition of the refrigeration pipeline in the refrigeration device;
2. The water content in the refrigerant;
3. The flow of lubricating oil in the oil return line from the oil separator
SG type hydraulic mirror indicator For CFC, HCF, HFC Refrigerant liquid without subcooling indication Low refrigerant indication Reservoir level indication Compressor oil level indicator flared, brazed, plug-in
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- Q: Can I save items for later?
A: Yes, you can save the items you wish to purchase later in the shopping cart. This way, when you are ready to proceed with the order, you can easily find them.
- Q: Do you support global shipping?
A: Yes, we support worldwide shipping. No matter where you are located, we will make every effort to deliver the products to your doorstep.
- Q: How to apply for an extended warranty on a product?
A: Applying for an extended warranty is simple. During the purchasing process, you can choose to extend the warranty period for eligible products. Just select the desired warranty period, and it will be added to your purchase.
Reviews
- C
Chris Chesnes
Mar 11, 2026
Danfoss Sight Glass SG4SFound what I wanted and checked out quickly and easily.HelpfulUnhelpful - S
Susan Pope
Oct 01, 2025
Danfoss Sight Glass SG4SThe package arrived right when I expected it to.HelpfulUnhelpful - L
Larry Cyr
Sep 05, 2025
Danfoss Sight Glass SG4SEl pedido llegó rápido y fue precisoHelpfulUnhelpful - E
Eugene Wildman
Feb 18, 2024
Danfoss Sight Glass SG4SIt arrived in no time, and it fits great.HelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Danfoss Sight Glass SG4SAll was ok! No problems whatsoever.HelpfulUnhelpful
Danfoss Sight Glass SG4S
✔ In Stock (Can ship in 5-7 days)

Online Support 24/7
12 Months Warranty for New Products
30 Days Money Back Guarantee
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