Description
The Zilmet ZEP1 is a high-quality stainless steel thermal expansion tank designed to protect tankless and point-of-use (POU) water heaters — especially those with up to ~2 gallons of total water volume. Its compact size and durable construction make it an ideal choice for managing pressure fluctuations, preventing stress on heat exchangers and plumbing, and safeguarding fixtures from potential leaks or damage.
Key Features
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Stainless steel 304 construction: The entire tank shell is made from corrosion-resistant 304 stainless steel — built to last and suitable for indoor or outdoor installation.
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Compact footprint & standard ½" NPT connection: Small 3.2″ diameter tank with a ½″ MNPT inlet — ideal for tight spaces or point-of-use installations.
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Factory pre-charged & adjustable air charge: Ships pre-charged (50 PSIG), and air pressure is adjustable and serviceable to match system requirements.
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High pressure tolerance: Rated up to 150 PSI working pressure, accommodating typical residential water system pressures.
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Reliable diaphragm inside: Butyl-membrane diaphragm to separate air from water — ensuring proper expansion tank function and long life.
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UV-resistant and outdoor-ready: The unit is UV-resistant and certified for outdoor installation if needed.
