Xylem-Bell & Gossett 1BN318LF PT-12 4.4 Gallon Potable Water Expansion Tank Lead-Free

The Bell & Gossett PT-12 is a 4.4-gallon diaphragm expansion tank designed specifically for potable domestic water systems in residential and light commercial applications. This non-ASME expansion tank absorbs the forces of expanding water and protects your plumbing system from dangerous pressure buildup caused by thermal expansion in water heaters and other hot water equipment.

Key Features:

• 4.4-gallon total capacity with 3.2-gallon acceptance volume
• FDA-approved heavy-duty butyl diaphragm with polypropylene liner completely isolates water from the steel shell
• Pre-charged to 40 PSI for optimal performance
• Maximum working pressure of 150 PSI
• Maximum operating temperature of 240°F
• 3/4-inch male NPT connection for easy installation
• Lead-free construction safe for drinking water systems
• NSF 61 listed for potable water applications
• Compact design: 11-inch diameter x 15-inch height

This expansion tank helps prevent excessive system pressures, eliminates relief valve blow-off, protects plumbing fixtures, and extends the life of your water heater. The durable steel shell construction with integrated diaphragm ensures reliable, maintenance-free operation for years. Can be installed in-line or floor mounted.