Alexander O Vygoder

US Patent:

20080078972, Apr 3, 2008

Filed:

Sep 29, 2006

Appl. No.:

11/536696

Inventors:

Harold J. Palin - Monroe CT, US
Lawrence N. Secchiaroli - Stratford CT, US
John C. Luckachina - Shelton CT, US
Alexander Vygoder - Naugatuck CT, US

International Classification:

F16K 1/22

US Classification:

251306

Abstract:

A butterfly valve having a valve body, a butterfly shaft, a butterfly plate, and a sleeve insert is provided. The valve body is made of a first material and the sleeve insert is made of a second material. The butterfly shaft is in the valve body for rotation about a first axis. The butterfly plate is in the valve body and secured to the butterfly shaft so that rotation of the butterfly shaft causes the butterfly plate to rotate about a second axis through a travel path between a closed position and an open position. The sleeve insert is in the valve body at least in a region of the travel path between the valve body and the butterfly plate.