Patent Number: 7,913,714

Title: Check valve and shut-off reset device for liquid delivery systems

Abstract: A check valve assembly which in an open position allows liquid to flow in one direction through the assembly including a moving sealing member which engages a seal to prevent liquid flow in a second opposite direction. The sealing member may be moved into engagement with the seal by rotation of a stem with an eccentric to block flow in both directions. A check valve and shut-off device assembly which in an open position allows liquid to flow in one direction through the assembly until gas or foam is mixed with the liquid. The shut-off device includes a sealing member which engages a seal to block flow through the assembly when foam or gas is present in the liquid. The check valve includes a sealing member which can reset the shut-off device. The check valve sealing member also engages the same sealing member to prevent any flow through the assembly in a closed position. In an open position, the check valve sealing member may engage the seal to prevent reverse flow of liquid through the assembly.

Inventors: Arov; Gennady (Bayside, WI), Molinari; Larry M. (Mequon, WI)

Assignee: Perlick Corporation

International Classification: F16K 17/00 (20060101)

Expiration Date: 2019-03-29 0:00:00