Caleffi’s Boiler Trim Kits are designed to simplify the process of installing hydronic systems. The company’s 20 kit combinations offer 2.2-, 4.4- or 7.6-gallon expansion tanks and DISCAL high-performance air separators with 3/4-, 1- or 1-1/4-inch connections. The kits also come with sweat or NPT connections, an automatic fitting valve, expansion tank check valve, two brass nipples and a brass tee. The packages are available with or without the company’s backflow preventer.
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