Check valve apparatus and methods

摘要

A check valve apparatus includes at least one first test channel including a first pathway extending through a valve body and in communication with a flow path. The pathway is configured to receive a test stick for inserting through the pathway of the test channel to engage a disc such that the disc moves from the open position to the closed position. In further examples, methods for testing a check valve include the step of moving an end of a test stick to engage a downstream face of a disc such that the disc is moved against a bias of a biasing device from the open position to the closed position. The method further includes the step of inspecting an interior portion of the check valve apparatus.

主权项

1. A check valve apparatus comprising:
a valve body defining a flow path; a valve member positioned within the flow path of the valve body; a movable disc coupled to the valve member and movable with respect to the valve member within the flow path between an open position wherein the flow path is open and a closed position wherein the flow path is closed; and at least one first test channel including a first pathway extending through the valve body and in communication with the flow path, wherein the first pathway is configured to receive a test stick for inserting through the first pathway of the test channel to engage the movable disc such that the movable disc moves from the open position toward the closed position, wherein the movable disc includes a downstream face and an upstream face provided with an upstream valve seat, wherein the check valve apparatus is configured such that the test stick may be inserted through the first pathway to engage the downstream face of the movable disc such that the movable disc moves from the open position toward the closed position.