Description
The Zilmet ZHP203BC is a high-quality potable water expansion tank designed to protect domestic hot water systems from pressure buildup caused by thermal expansion. With a 2.1-gallon capacity, a durable butyl diaphragm, and NSF/ANSI 61 certification, this tank is ideal for residential water heaters and closed potable water systems equipped with check valves or pressure-reducing valves. Compact, reliable, and built for long-term performance, the ZHP203BC helps maintain safe pressure levels and extends the lifespan of your water heater and plumbing components.
Key Features
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2.1-Gallon Capacity
Perfect size for small to mid-sized residential water heaters.
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NSF/ANSI 61 Certified
Approved for potable water applications—safe for drinking water systems.
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Durable Butyl Diaphragm
Ensures long-term separation of water and air, preventing waterlogging and maintaining consistent performance.
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Corrosion-Resistant Interior Liner
Protects against rust and scale buildup, extending tank life.
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Pre-Charged for Easy Installation
Ships ready to install for quick integration into existing plumbing systems.
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Compact & Versatile Mounting
Small footprint fits tight spaces and mechanical rooms with ease.
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Compatible With All Water Heater Types
Works with gas, electric, tankless, and hybrid heaters in closed systems.
