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8200 N. Austin Ave
 Morton Grove
IL 60053
USA
 Tel 847 966-3700
Fax 847 965-8379
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 Dictionary of Terms
Two-Pipe System (Steam or Water)
A heating system in which one pipe is used for the supply main and another for the return main. In a two-pipe hot water system each heating unit receives a direct supply of the heating medium.
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