Removable ball and seat valve unit

• US 3,095,898 A
• Filed: 12/02/1960
• Issued: 07/02/1963
• Est. Priority Date: 12/02/1960
• Status: Expired due to Term

• Current Assignee: Howard G. Freeman, William W. Rawstron
• Original Assignee: Howard G. Freeman, William W. Rawstron
• Inventors: Freeman, Howard G., Rawstron, William W.
• Application Number:
  US04/073,237
• Time in Patent Office: 942 Days
• US Class Current: 137/454.2
• CPC Class Codes: F16K 5/0636 the spherical plug being insertable from the top of the housing
• CPC Class Codes: F16K 5/0673 Composite packings
• CPC Class Codes: Y10T 137/7504 Removable valve head and seat unit

Claims

1. A BALL VALVE COMPRISING A HOLLOW VALVE CASING HAVING A LONGITUDINAL DIRECTION AND LONGITUDINALLY SPACED INNER END WALLS DEFINING A VALVE CHAMBER AND INLET AND OUTLET PASSAGES THROUGH SAID END WALLS COMMUNICATING WITH SAID CHAMBER, A BALL AND SEAT ASSEMBLY DISPOSED BETWEEN SID END WALLS, SAID ASSEMBLY INCLUDING A YIELDABLE SEALING MEMBER ENGAGING SAID BALL, AND ADJUSTABLE MEANS INDEPENDENT OF SAID CASING FOR CONSTRICTING SAID ASSEMBLY TO A DIMENSION LESS THAN THE SPACING OF SAID END WALLS IN THE LONGITUDINAL DIRECTION OF SAID CASING, SAID CASING HAVING A SIDE OPENING OF A SIZE TO ADMIT SAID ASSEMBLY WHEN RESTRICTED TO SAID DIMENSION COMMUNICATING WITH SAID CHAMBER, AND A COVER CLOSING SAID OPENING AND SECURED TO SAID BODY.