39.6 GAL FLOOR HYD EXP TANK

Product description

Zilmet ZHT150 Hydronic Expansion Tank
This model is a ~39.6-gallon floor-mounted diaphragm expansion tank designed to handle thermal expansion in large closed-loop heating systems.

Key specifications

• Type: Hydronic expansion tank (boiler/heating systems)
• Capacity: 39.6 gallons
• Connection: 3/4" NPT
• Max pressure: 90 PSI
• Max temperature: 210°F
• Material: Carbon steel shell with internal SBR rubber diaphragm
• Installation: Vertical, floor-mounted tank with base

What it does

In a hydronic system, water expands as it heats. The ZHT150:

• absorbs large expansion volume from boiler operation
• stabilizes system pressure
• prevents relief valve discharge
• protects boilers, pumps, and piping from overpressure

Typical applications

• Large residential boiler systems
• Commercial HVAC hydronic loops
• Multi-zone radiant floor heating systems
• Schools, apartment buildings, and institutional heating plants