<P> An expansion tank or expansion vessel is a small tank used to protect closed ( not open to atmospheric pressure ) water heating systems and domestic hot water systems from excessive pressure . The tank is partially filled with air , whose compressibility cushions shock caused by water hammer and absorbs excess water pressure caused by thermal expansion . </P>
<P> An expansion tank or expansion vessel is a small tank used to protect closed ( not open to atmospheric pressure ) water heating systems and domestic hot water systems from excessive pressure . The tank is partially filled with air , whose compressibility cushions shock caused by water hammer and absorbs excess water pressure caused by thermal expansion . </P>
what is an expansion vessel on a boiler
what is an expansion vessel on a boiler
a small tank used to protect closed ( not open to atmospheric pressure ) water heating systems and domestic hot water systems from excessive pressure
a small tank used to protect closed ( not open to atmospheric pressure ) water heating systems and domestic hot water systems from excessive pressure