BUTTERFLY VALVE COMBINED WITH CHECK VALVE

• US 20100236650A1
• Filed: 03/23/2009
• Published: 09/23/2010
• Est. Priority Date: 03/23/2009
• Status: Abandoned Application

• Current Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Original Assignee: Hamilton Sundstrand Corporation (Rtx Corporation)
• Inventors: Stredel, Adam
• Application Number:
  US12/408,970
• Publication Number:
  US 20100236650A1
• Time in Patent Office: Days
• US Class Current: 137/599.180
• CPC Class Codes: F16K 1/22 with axis of rotation crossing the valve member, e.g. butterfly valves
• CPC Class Codes: F16K 15/038 having a common hinge
• CPC Class Codes: F16K 15/1821 for check valves with a hinged or pivoted closure member
• CPC Class Codes: Y10T 137/87394 Carried valve is direct response valve [e.g., check valve, etc.]

Abstract

A combination valve comprises a butterfly valve mounted to pivot within a valve housing, and to control the area of a flow path within the valve housing. The butterfly valve is provided with an actuator to pivot the valve. A check valve is mounted at an outlet end of the valve housing.

Claims

1. A combination valve comprising:

a butterfly valve being mounted to pivot within a valve housing, and to control the area of a flow path within said valve housing, said butterfly valve being driven to pivot by an actuator; and

a check valve mounted at an outlet end of said valve housing.

2. The combination valve as set forth in claim 1, wherein said check valve is a flapper valve that includes at least one valve member pivoting on a pin.

3. The combination valve as set forth in claim 2, wherein the pin is mounted at a central location across an outlet flow opening.

4. The combination valve as recited in claim 3, wherein there are two flapper valve portions pivotally mounted on said pin.

5. The combination valve as set forth in claim 3, wherein said pin is mounted in ears that extend in an outward direction from said outlet end of said housing.

6. The combination valve as set forth in claim 1, wherein said pin is mounted in ears that extend in an outward direction from said outlet end of said housing.