Description
The Zilmet ZEP5 is a high-quality in-line thermal expansion tank designed to safeguard residential and light-commercial hot water systems from pressure spikes caused by thermal expansion. With a 2.1 gallon tank capacity and ¾" NPT connection, it's ideal for standard water heaters, closed potable water systems, and water heater installations requiring expansion protection. The tank’s durable construction and NSF-certified materials make it a trusted choice for long-term reliability.
Key Features
-
2.1 Gallon Capacity: Provides ample water-expansion buffer for most residential water heaters and closed supply systems.
-
¾" NPT Connection: Standard threaded inlet/outlet simplifies installation and ensures broad compatibility.
-
Carbon Steel Shell with Polypropylene Liner: Combines structural strength with corrosion-resistant interior — extending service life and safeguarding water quality.
-
Butyl Diaphragm (Seamless, Low-Permeability): Maintains a reliable separation between air charge and water, preventing internal corrosion or contamination and supporting stable pressure regulation.
-
Rated for Up to 150 PSI & 210 °F: Suitable for typical domestic hot water applications and capable of handling standard operating conditions safely.
-
Factory Leak-Tested & Pre-Charged: Ships ready for installation, with quality control testing to ensure integrity and performance.
-
NSF/ANSI 61 Certified (Potable Water Safe): Approved for use in drinking-water systems and compliant with relevant plumbing standards.
