IMPROVED AUTOMATIC RECIRCULATION VALVE

摘要

An automatic recirculation valve (10) having a body portion (12), a central hub (60) integral with said body portion (12) and inlet (16), main outlet (18) and recirculation outlets (20). A main valve element (28) responsive to flow from said inlet (16) to said main outlet (18) includes a hollow stem (42) forming a bypass valve member (32) through which recirculation fluid flows. A shaft guide bushing (56) surrounding the valve stem (42) and bypass adapter (58) in the bypass outlet (20) provides a recirculation fluid passage and imparts a swirling movement to the recirculation fluid exiting the recirculation outlet (20) to protect the valve body (12) and downstream piping from damage.