Tubular diaphragm

摘要

Embodiments include tubular diaphragm valves with a preformed mechanical closure point and optionally concave or convex convolution areas located near the flanges. These mechanical closure points and convolution areas give the embodiments an extended operational life, as compared to that of conventional cylindrical diaphragms.

主权项

1. A tubular diaphragm comprising:
a tubular diaphragm having a premolded shape which gives it an enhanced lifetime in use.