FROST-PROOF GL48 Anti-Freeze Solution
Anti-Freeze and Heat Transfer Fluid
- Formulated for CPVC Fire Lines
- NFPA Compliant Glycerine
- Premixed Anti-Freeze
- Burst Protection to -50°F (-46°C)
- Generally Recognized as Safe
FROST-PROOF GL48 Anti-Freeze is a non-toxic, glycerine based anti-freeze for all types of wet fire sprinkler systems, including CPVC, that provides burst protection to -50°F (-46°C). FROST-PROOF GL48 is a 48% pre-blend that conforms to NFPA standards to allow for direct replacement of anti-freeze in the system. No dilution is required.
FROST-PROOF GL48 is nonflammable and non-corrosive. FROST-PROOF GL48 will not support bacterial growth in the system and eliminates the possibility of contaminating domestic and potable water systems. FROST-PROOF GL48 Anti-Freeze Solution is “Generally Recognized as Safe” (GRAS) by the Federal Food and Drug Administration. All fire protection systems that use FROST-PROOF GL48 need to conform to local, state and NFPA requirements.
FROST-PROOF GL48, when used undiluted, will protect against freeze damage and ensures flow in the system. See freeze protection chart below.

Made in the U.S.A.
Product Name | Product Code | Size | Container | Items Per Case | Case Weight | UPC Code |
---|---|---|---|---|---|---|
FROST-PROOF GL48 | FPGL5 | 5 Gallon (18.9 L) | Pail w/ Handle | 1 | 44 lbs. (20 kg) | 688544055825 |
FPGL55 | 55 Gallon (208 L) | 55 Gallon Drum | 1 | 500 lbs. (226.8 kg) | 688544555820 | |
FPGL275 | 275 Gallon (1041 L) | 275 Gallon Tote | 1 | 2500 lbs. (1134 kg) | N/A |