The Granby Industries 330 Gallon Steel Hydronic Expansion Tank is a high-capacity, heavy-duty solution designed for residential and commercial hydronic heating systems, offering reliable pressure control and long-term durability.
🔧 Product Overview
- Capacity: 330 gallons, ideal for large-scale hydronic heating applications requiring substantial thermal expansion management.
- Material: Constructed from 12-gauge ASTM A-1011 steel, known for its strength and corrosion resistance.
- Design: Vertical orientation with a compact footprint (approx. 72" L × 27" W × 44" H), allowing for efficient space utilization in mechanical rooms or basements.
- Fittings: Includes ½-inch FNPT bottom connection and multiple 2-inch top NPT openings for versatile plumbing configurations.
- Finish: Coated with electrostatic powder paint in black or grey, phosphate washed and oven-dried for enhanced corrosion protection.
- Pressure Rating: Factory pressure tested at 5 PSIG, designed for operation at atmospheric pressure.
- Certifications: UL 80 listed for aboveground fuel and hydronic fluid storage; UL 142 certification available for models with emergency venting.
- Installation Features: Equipped with recessed grip handles and robust leg brackets for stability and ease of handling.
This tank is part of Granby’s trusted line of steel expansion tanks, engineered to meet the demands of modern hydronic systems while ensuring safety, efficiency, and long-term performance.
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