Patent ID: 9173430
Filing Date: 2015-11-03
Classification: A23L,B01F,F16K

Abstract:
1. A check valve for installation in a hole in a body having a defined thickness comprising an elastomeric plug having a high pressure side and a low pressure side joined by a stem, a passageway open at the low pressure side and extending through the low pressure side, through the stem and into the high pressure side, terminating within a shank in the high pressure side and defining a shank sidewall laterally of the passageway, and at least one puncture through the shank sidewall to the passageway, whereby when the plug is installed with the stem in the hole of the body and the low pressure side on one side of the hole and the high pressure side on an opposite side of the hole, a high pressure source can be introduced into the passageway from the low pressure side, high pressure fluid can be released into the passageway from the high pressure source, causing passageway distention and enlarging the puncture to allow high pressure fluid to flow through the puncture, and when the high pressure source is removed, the passageway returns to an undistended shape, closing the puncture and preventing flow of pressurized fluid from the high pressure side to the low pressure side.