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Gray flat round hydronic expansion tank with Zilmet logo and brass top connection fitting.

Zilmet ZFT18C 4.8 gal flat round hydronic tank with 1/2" NPT connection, union (two-way check valve), and welded bracket

Regular price $121.97
Sale price $121.97 Regular price $0.00

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This compact flat-round hydronic expansion tank helps stabilize pressure fluctuations in closed heating systems, protecting boilers, piping, and valves from stress. The 4.8-gallon capacity is well-suited for residential hydronic loops and small commercial setups. A built-in union with two-way check valve simplifies installation and servicing, while the welded mounting bracket ensures secure placement. Durable internal diaphragms maintain long-term reliability.