Valve

• US 3,189,278 A
• Filed: 12/21/1962
• Issued: 06/15/1965
• Est. Priority Date: 12/21/1962
• Status: Expired due to Term

• Current Assignee: William B. Drury
• Original Assignee: William B. Drury
• Inventors: Drury, William B.
• Application Number:
  US04/246,441
• Time in Patent Office: 907 Days
• US Class Current: 237/56
• CPC Class Codes: F16K 11/085 with cylindrical plug
• CPC Class Codes: F24D 19/1006 for water heating systems
• CPC Class Codes: Y10T 137/86815 Multiple inlet with single outlet

Claims

1. A BALANCING AND PURGE VALVE COMPRISING A BODY;

FIRST AND SECOND RETURN INLET PORTS IN SAID BODY;

A COMMON RETURN OUTLET PORT IN SAID BODY;

A COMMON OUTLET DRAIN PORT IN SAID BODY;

BYPASS MEANS IN SAID BODY CONNECTING SAID INLET PORTS TO SAID COMMON DRAIN PORT;

AND UNITARY ROTARY PLUG MEANS IN SAID BODY ADAPTED IN ONE ROTARY POSITION TO SIMULTANEOUSLY CONNECT SAID INLET PORTS TO SAID COMMON RETURN OUTLEWT PORT AND TO BLOCK SAID BYPASS MEANS LEADING TO SAID COMMON OUTLET DRAIN PORT, IN ANOTHER ROTARY POSITION TO BLOCK SAID FIRST AND INLET PORT TO SAID COMMON RETURN OUTLET PORT WHILE OPENING SAID FIRST INLET PORT TO SAID COMMON OUTLET DRAIN PORT, AND IN STILL ANOTHER ROTARY POSITION TO BLOCK SAID SECOND INLET PORT TO SAID COMMON RETURN OUTLET PORT WHILE OPENING SAID SECOND INLET PORT TO SAID COMMON OUTLET DRAIN PORT.