DIAPHRAGM FOR USE WITH CONTROL VALVES.

摘要

A diaphragm (119) for use with a valve includes a body (119a) having a central portion (119b) including an outer central portion and offset by an angled portion (119c) from an outer portion. The central portion is to be disposed at a position adjacent a valve seat and displaced into engagement with the valve seat to affect fluid flow. The body deforms substantially at the outer central portion and angled portion during displacement of the central portion by the valve and reacts substantially unilaterally to prevent vibration of the diaphragm during fluid flow past the valve seat.