Butterfly valve

US9022351B2 · kind B2 · utility

Assignee

• Norgren Limited · DE

Inventors

• Primoz Zlindra · Magstadt, DE
• Timo Hufnagel · Eppingen, DE
• Mark Edward Byers Sealy

Key dates

• Filing date: Sep 18, 2011
• Grant date: May 5, 2015
• Expiry date: Sep 18, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/6579
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A butterfly valve (100) is provided. The butterfly valve (100) includes a valve body (103) including a valve bore (109) passing through the valve body (103), with the valve bore (109) including an upstream valve bore portion (109U) and a downstream valve bore portion (109D), a shaft bore (112), a valve shaft (121) located in the shaft bore (112) and extending substantially across the valve bore (109), and a valve flap (107) affixed to the valve shaft (121) and configured to be rotated by the valve shaft (121). The valve flap (107) is configured to rotate between a closed orientation blocking the valve bore (109) and an open orientation. The valve flap (107) is affixed on an upstream valve bore portion side of the valve shaft (121), wherein incoming fluid presses the valve flap (107) against the valve shaft (121).