Double seat valve

US7905253B2 · kind B2 · utility

Assignee

• Tuchenhagen GmbH · DE

Inventors

• Jens Burmester · Grambek, DE
• Matthias Südel · Ratekau, DE

Key dates

• Filing date: Feb 18, 2006
• Grant date: Mar 15, 2011
• Expiry date: Nov 13, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/88038
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a double seat valve with cleanable seats, the valve including first and second closing elements (3, 4) and a leakage cavity (5). An intermediate seal (8) seals the closing elements (3, 4) in their opening and closing movements and in the open position against each other, is arranged in the second closing element (4). The second closing element (4) abuts in its closed position at a transition area (2e, 2e*) with a stop face (4e) arranged at a front face of a cylindrical lug (4*) and that directly adjacent to a first seat (2a, 2g), a central recess (4d) is provided in a front face of a second cylindrical lug (4*).