Butterfly valve assembly

Valves and valve actuation – Rotary valves – Butterfly

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

137375, F16K 1226

Patent

active

042667542

ABSTRACT:
The invention relates to a butterfly valve assembly having a stationary valve body formed with an axial fluid flow passage opening and a turnable valve member adapted for full opening, partial opening and full closing of the said passage opening. There is provided further a valve seat ring composed of an inner protecting layer of fluoride containing resin and an outer back-up layer of rubber or its equivalent. According to this invention, at least two parallel ring grooves are provided on the radially outwardly directing surface of the said elastomer layer which has a substantially channel-shaped cross-section embracing a substantial part of the valve body when the valve seat ring is attached in position to the valve body. Further, each of both chords of the channel in its cross-section are opposingly bulged out inwardly at the both ends of each channel chord for creating and maintaining each a tongue-and-recess mode intimate connection between the valve body and the elastomer layer, when the valve seat ring is attached to the valve body. Still further, a small idle gap is formed in each of the inner corners of the channel for receiving occasional and radial physical deformation of the elastomer layer caused by repeated operation of the valve member.

REFERENCES:
patent: 3241806 (1966-03-01), Snell, Jr.
patent: 3341170 (1967-09-01), Housworth
patent: 3420498 (1969-01-01), Housworth
patent: 3425439 (1969-02-01), Duffey et al.
patent: 3473784 (1969-10-01), Radford
patent: 3784157 (1974-01-01), Wenglar
patent: 3837620 (1974-09-01), Malloy et al.
patent: 4014511 (1977-03-01), Uno
patent: 4025050 (1977-05-01), Manki et al.
patent: 4133513 (1979-01-01), Meyer

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Butterfly valve assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Butterfly valve assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Butterfly valve assembly will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2042568

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.