| 摘要 |
<p>A diaphragm valve housing has a flexible diaphragm positioned to permit access of at least two of three channels passing within said valve housing to one side of said diaphragm, through channel ports, to allow fluid flow between the channels. A control vent opens to a second side of said diaphragm to allow a control fluid to press said diaphragm against a sealing surface to seal said channels from one another. The valve construction can be used in various combinations with other like valve constructions having more or fewer channels therein.</p> |
