Patent ID: 9551427
Date: 2017-01-24
CPC Classifications: F15C,F16K

Claim:
1. A valve device comprising: a substrate comprising first and second surfaces positioned on opposing sides of the substrate, a first groove extending along the first surface into and ending at an end in a valve area formed on the first surface, a second groove extending along the second surface, a channel fluidically coupled to the second groove and extending from the second surface to the first surface into and ending at an end in the valve area; a first membrane providing a fluid tight connection with the first surface of the substrate except at the valve area thereby forming a valve at the valve area and forming a first channel at the first groove, an area of the end of the first groove is substantially larger than an area of the end of the channel and the end of the first groove is horseshoe shaped; a second membrane providing a fluid tight connection with the second surface of the substrate forming a second channel at the second groove; a plunger provided in the valve area for selectively pressing against the first membrane in at least a part of the valve area on a side opposite the first surface; and a pressure device configured to press the plunger against the first membrane.