AY McDonald requires that we display a price that is at or above manufacturer’s established price. Since our price for the product is lower than MAP, the manufacturer does not allow us to display discounted price unless you add item to the cart. The process does not require you to purchase the product. It can be removed from the cart anytime.
DuraMACTM Expansion Tanks are designed for the specific purpose of accommodating the natural expansion of water in a Hydronic Heating System. To eliminate the water logging that is troublesome but normal in a plain steel expansion tank, the air and water within the tank is permanently separated by a butyl diaphragm. The in-line series shown on this page are light in weight, easy to install, and afford many years of trouble-free service.
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